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132-519: The open-hearth furnace was first developed by German -born engineer Carl Wilhelm Siemens . In 1865, the French engineer Pierre-Émile Martin took out a licence from Siemens and first applied his regenerative furnace for making steel . Their process was known as the Siemens–Martin process or Martin–Siemens process , and the furnace as an "open-hearth" furnace. Most open hearth furnaces were closed by

264-748: A general armistice ended the fighting. In the German Revolution (November 1918), Wilhelm II and the ruling princes abdicated their positions, and Germany was declared a federal republic . Germany's new leadership signed the Treaty of Versailles in 1919, accepting defeat by the Allies . Germans perceived the treaty as humiliating, which was seen by historians as influential in the rise of Adolf Hitler . Germany lost around 13% of its European territory and ceded all of its colonial possessions in Africa and

396-513: A sustainable energy supply, the debt brake for balanced budgets, measures to increase the fertility rate ( pronatalism ), and high-tech strategies for the transition of the German economy, summarised as Industry 4.0 . During the 2015 European migrant crisis , the country took in over a million refugees and migrants. Germany is the seventh-largest country in Europe . It borders Denmark to

528-567: A temperate climate, ranging from oceanic in the north and west to continental in the east and southeast. Winters range from the cold in the Southern Alps to cool and are generally overcast with limited precipitation, while summers can vary from hot and dry to cool and rainy. The northern regions have prevailing westerly winds that bring in moist air from the North Sea, moderating the temperature and increasing precipitation. Conversely,

660-487: A "partial decarbonization" method of repeated forging of cast iron under a cold blast. Sinologist Joseph Needham and historian of metallurgy Theodore A. Wertime have described the method as a predecessor to the Bessemer process of making steel. This process was first described by the prolific scholar and polymath government official Shen Kuo (1031–1095) in 1075, when he visited Cizhou. Hartwell states that perhaps

792-460: A NATO effort to provide security in that country after the ousting of the Taliban . In the 2005 elections , Angela Merkel became the first female chancellor. In 2009, the German government approved a €50 billion stimulus plan. Among the major German political projects of the early 21st century are the advancement of European integration , the energy transition ( Energiewende ) for

924-492: A book published in English in 1669. He writes, "They have, among others, particular invention for the melting of iron, without the using of fire, casting it into a tun done about on the inside without about half a foot of earth, where they keep it with continual blowing, take it out by ladles full, to give it what form they please." According to historian Donald Wagner, Mandelslo did not personally visit Japan, so his description of

1056-658: A centralised totalitarian state , withdrew from the League of Nations , and dramatically increased the country's rearmament . A government-sponsored programme for economic renewal focused on public works, the most famous of which was the Autobahn . In 1935, the regime withdrew from the Treaty of Versailles and introduced the Nuremberg Laws which targeted Jews and other minorities. Germany also reacquired control of

1188-615: A framework laid out in the 1949 constitution known as the Grundgesetz (Basic Law). Amendments generally require a two-thirds majority of both the Bundestag and the Bundesrat ; the fundamental principles of the constitution, as expressed in the articles guaranteeing human dignity, the separation of powers, the federal structure, and the rule of law , are valid in perpetuity. The president , currently Frank-Walter Steinmeier ,

1320-405: A full day of heating, stirring and reheating to achieve this. The blowing of air through the molten pig iron introduces oxygen into the melt which results in oxidation , removing impurities found in the pig iron, such as silicon , manganese , and carbon in the form of oxides . These oxides either escape as gas or form a solid slag . The refractory lining of the converter also plays a role in

1452-680: A joint responsibility of the international community. It was the world's second-biggest aid donor in 2019 after the United States. Germany's military, the Bundeswehr (Federal Defence), is organised into the Heer (Army and special forces KSK ), Marine (Navy), Luftwaffe (Air Force) and Cyber- und Informationsraum (Cyber and Information Domain Service) branches. In absolute terms, German military spending in 2023

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1584-429: A lower rate on a proportion of their output in order to encourage production, but not so large a proportion that they might decide to reduce their selling prices. By this method he hoped to cause the new process to gain in standing and market share. He realised that the technical problem was due to impurities in the iron and concluded that the solution lay in knowing when to turn off the flow of air in his process so that

1716-582: A number of English puddlers visited this place to see my new process. Several of them have since returned to England and may have spoken of my invention there." It is suggested Kelly's process was less developed and less successful than Bessemer's process. Sir Henry Bessemer described the origin of his invention in his autobiography written in 1890. During the outbreak of the Crimean War , many English industrialists and inventors became interested in military technology. According to Bessemer, his invention

1848-452: A patent that was taken out in May 1878. Sidney Gilchrist Thomas's invention consisted of using dolomite or sometimes limestone linings for the Bessemer converter rather than clay, and it became known as the 'basic' Bessemer rather than the 'acid' Bessemer process. An additional advantage was that the processes formed more slag in the converter, and this could be recovered and used very profitably as

1980-669: A phosphate fertilizer. In 1898, Scientific American published an article called Bessemer Steel and its Effect on the World explaining the significant economic effects of the increased supply in cheap steel. They noted that the expansion of railroads into previously sparsely inhabited regions of the country had led to settlement in those regions, and had made the trade of certain goods profitable, which had previously been too costly to transport. The Bessemer process revolutionized steel manufacture by decreasing its cost, from £40 per long ton to £6–7 per long ton, along with greatly increasing

2112-462: A process called teeming , or it may be used in continuous casting in the rolling mill. The regenerators are the distinctive feature of the furnace and consist of fire-brick flues filled with bricks set on edge and arranged in such a way as to have a great number of small passages between them. The bricks absorb most of the heat from the outgoing waste gases and return it later to the incoming cold gases for combustion. Carl Wilhelm Siemens developed

2244-547: A provisional capital, to emphasise its stance that the two-state solution was temporary. West Germany was established as a federal parliamentary republic with a " social market economy ". Starting in 1948 West Germany became a major recipient of reconstruction aid under the American Marshall Plan . Konrad Adenauer was elected the first federal chancellor of Germany in 1949. The country enjoyed prolonged economic growth ( Wirtschaftswunder ) beginning in

2376-577: A series of Imperial Reforms (approximately 1495–1555) provided for considerable local autonomy and a stronger Imperial Diet . The House of Habsburg held the imperial crown from 1438 until the death of Charles VI in 1740. Following the War of the Austrian Succession and the Treaty of Aix-la-Chapelle , Charles VI's daughter Maria Theresa ruled as empress consort when her husband, Francis I , became emperor. From 1740, dualism between

2508-638: A state, the East German authorities eased border restrictions, but this actually led to an acceleration of the Wende reform process culminating in the Two Plus Four Treaty under which Germany regained full sovereignty. This permitted German reunification on 3 October 1990, with the accession of the five re-established states of the former GDR. The fall of the Wall in 1989 became a symbol of

2640-712: A symbol of the Cold War . Tensions between East and West Germany were reduced in the late 1960s by Chancellor Willy Brandt 's Ostpolitik . In 1989, Hungary decided to dismantle the Iron Curtain and open its border with Austria , causing the emigration of thousands of East Germans to West Germany via Hungary and Austria. This had devastating effects on the GDR, where regular mass demonstrations received increasing support. In an effort to help retain East Germany as

2772-431: A time. They were usually operated in pairs, one being blown while another was being filled or tapped. By the early 19th century the puddling process was widespread. Until technological advances made it possible to work at higher heats, slag impurities could not be removed entirely, but the reverberatory furnace made it possible to heat iron without placing it directly in the fire, offering some degree of protection from

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2904-522: A ton. Sidney Gilchrist Thomas , a Londoner with a Welsh father, was an industrial chemist who decided to tackle the problem of phosphorus in iron, which resulted in the production of low grade steel. Believing that he had discovered a solution, he contacted his cousin, Percy Gilchrist , who was a chemist at the Blaenavon Ironworks . The manager at the time, Edward Martin, offered Sidney equipment for large-scale testing and helped him draw up

3036-634: A universal health care system , and tuition-free university education . Germany is a member of the United Nations , Council of Europe , NATO and OECD , and a founding member of the European Union, G7 and G20 . It has the third-highest number of UNESCO World Heritage Sites , 54 , of which 51 are cultural. The English word Germany derives from the Latin Germania , which came into use after Julius Caesar adopted it for

3168-464: A vast array of uses. Mushet's patent ultimately lapsed due to Mushet's inability to pay the patent fees and was acquired by Bessemer. Bessemer earned over 5 million dollars in royalties from the patents. The first company to license the process was the Manchester firm of W & J Galloway , and they did so before Bessemer announced it at Cheltenham in 1856. They are not included in his list of

3300-580: A visit to London in 1857. During the first half of 1858, Göransson, together with a small group of engineers, experimented with the Bessemer process at Edsken near Hofors , Sweden before he finally succeeded. Later in 1858 he again met with Henry Bessemer in London, managed to convince him of his success with the process, and negotiated the right to sell his steel in England. Production continued in Edsken, but it

3432-508: Is added, together with pig iron from blast furnaces . Once all the steel has melted, slag-forming agents such as limestone are added. Atmospheric oxygen in contact with molten pig iron directly oxidizes the carbon in excess it contains to form carbon monoxide (CO). Additionally, Fe(II) present in iron(II) oxide (FeO) and other impurities also contribute to decarburize the pig iron by oxidizing carbon into CO and simultaneously reducing Fe(II) into metallic Fe. The formed carbon monoxide (CO)

3564-577: Is controversial. The process using a basic refractory lining is known as the "basic Bessemer process" or Gilchrist–Thomas process after the English discoverers Percy Gilchrist and Sidney Gilchrist Thomas . A system akin to the Bessemer process has existed since the 11th century in East Asia. Economic historian Robert Hartwell writes that the Chinese of the Song dynasty (960–1279 CE) innovated

3696-648: Is devoted to agriculture, while 30% is forested and 14% is covered by settlements or infrastructure. Plants and animals include those generally common to Central Europe. According to the National Forest Inventory, beeches , oaks , and other deciduous trees constitute just over 40% of the forests; roughly 60% are conifers , particularly spruce and pine . There are many species of ferns , flowers , fungi , and mosses . Wild animals include roe deer , wild boar , mouflon (a subspecies of wild sheep), fox , badger , hare , and small numbers of

3828-456: Is flushed away in the fumes, while steel is formed. To increase the oxidizing power of the "heat", more iron oxide ore can be added. The process is far slower than that of the Bessemer converter and thus easier to control and sample for quality assessment. Preparing a heat usually takes eight to eight and a half hours, and longer to finish the conversion into steel. As the process is slow, it

3960-608: Is largely autonomous in regard to its internal organisation. As of 2017 , Germany is divided into 401 districts ( Kreise ) at a municipal level; these consist of 294 rural districts and 107 urban districts . Germany has a civil law system based on Roman law with some references to Germanic law . The Bundesverfassungsgericht (Federal Constitutional Court) is the German Supreme Court responsible for constitutional matters, with power of judicial review . Germany's specialized supreme court system includes

4092-419: Is not necessary to burn all the carbon away as in the Bessemer process, but the process can be terminated at any given point when the desired carbon content has been achieved. The furnace is tapped in the same way a blast furnace is tapped; a hole is drilled in the side of the hearth and the raw steel flows out. Once all the steel has been tapped, the slag is skimmed away. The raw steel may be cast into ingots,

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4224-653: Is the head of state and invested primarily with representative responsibilities and powers. He is elected by the Bundesversammlung (federal convention), an institution consisting of the members of the Bundestag and an equal number of state delegates. The second-highest official in the German order of precedence is the Bundestagspräsident ( President of the Bundestag ), who is elected by

4356-488: Is vested in the parliament consisting of the Bundestag (Federal Diet) and Bundesrat (Federal Council), which together form the legislative body. The Bundestag is elected through direct elections using the mixed-member proportional representation system. The members of the Bundesrat represent and are appointed by the governments of the sixteen federated states. The German political system operates under

4488-463: The Gründerzeit period following the unification of Germany, Bismarck's foreign policy as chancellor of Germany secured Germany's position as a great nation by forging alliances and avoiding war. However, under Wilhelm II , Germany took an imperialistic course, leading to friction with neighbouring countries. A dual alliance was created with the multinational realm of Austria-Hungary ;

4620-491: The Bundestag and responsible for overseeing the daily sessions of the body. The third-highest official and the head of government is the chancellor, who is appointed by the Bundespräsident after being elected by the party or coalition with the most seats in the Bundestag . The chancellor, currently Olaf Scholz , is the head of government and exercises executive power through his Cabinet . Since 1949,

4752-955: The Allies de jure abolished the German state and partitioned Berlin and Germany's remaining territory into four occupation zones. The western sectors, controlled by France, the United Kingdom , and the United States , were merged on 23 May 1949 to form the Federal Republic of Germany ( German : Bundesrepublik Deutschland ); on 7 October 1949, the Soviet Zone became the German Democratic Republic (GDR) ( German : Deutsche Demokratische Republik ; DDR). They were informally known as West Germany and East Germany. East Germany selected East Berlin as its capital, while West Germany chose Bonn as

4884-625: The Battle of Britain in the same year. In 1941, German troops invaded Yugoslavia , Greece and the Soviet Union . By 1942, Germany and its allies controlled most of continental Europe and North Africa , but following the Soviet victory at the Battle of Stalingrad , the Allied reconquest of North Africa and invasion of Italy in 1943, German forces suffered repeated military defeats. In 1944,

5016-597: The Berchtesgaden National Park . In addition, there are 17 Biosphere Reserves , and 105 nature parks . More than 400 zoos and animal parks operate in Germany. The Berlin Zoo , which opened in 1844, is the oldest in Germany, and claims the most comprehensive collection of species in the world. Germany is a federal , parliamentary , representative democratic republic. Federal legislative power

5148-1186: The Eurasian beaver . The blue cornflower was once a German national symbol . The 16 national parks in Germany include the Jasmund National Park , the Vorpommern Lagoon Area National Park , the Müritz National Park , the Wadden Sea National Parks , the Harz National Park , the Hainich National Park , the Black Forest National Park , the Saxon Switzerland National Park , the Bavarian Forest National Park and

5280-627: The European Union  (light green) Germany , officially the Federal Republic of Germany , is a country in Central Europe . It lies between the Baltic and North Sea to the north and the Alps to the south. Its sixteen constituent states have a total population of over 82 million in an area of 357,596 km (138,069 sq mi), making it the most populous member state of

5412-660: The Fall of Communism , the dissolution of the Soviet Union , German reunification and Die Wende ("the turning point"). United Germany was considered the enlarged continuation of West Germany so it retained its memberships in international organisations. Based on the Berlin/Bonn Act (1994), Berlin again became the capital of Germany, while Bonn obtained the unique status of a Bundesstadt (federal city) retaining some federal ministries. The relocation of

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5544-518: The Forest of Dean . His method was to first burn off, as far as possible, all the impurities and carbon, then reintroduce carbon and manganese by adding an exact amount of spiegeleisen , an alloy of iron and manganese with trace amounts of carbon and silicon . This had the effect of improving the quality of the finished product, increasing its malleability —its ability to withstand rolling and forging at high temperatures and making it more suitable for

5676-652: The German Revolution of 1918–1919 , the Empire was replaced by the Weimar Republic . The Nazi rise to power in 1933 led to the establishment of a totalitarian dictatorship , World War II , and the Holocaust . In 1949, after the war and a period of Allied occupation , Germany was organized into two separate polities with limited sovereignty: the Federal Republic of Germany, or West Germany , and

5808-726: The Investiture controversy . Under the Hohenstaufen emperors (1138–1254), German princes encouraged German settlement to the south and east ( Ostsiedlung ). Members of the Hanseatic League , mostly north German towns, prospered in the expansion of trade. The population declined starting with the Great Famine in 1315, followed by the Black Death of 1348–1350. The Golden Bull issued in 1356 provided

5940-657: The Jastorf culture during the Nordic Bronze Age or early Iron Age . From southern Scandinavia and northern Germany , they expanded south, east, and west, coming into contact with the Celtic , Iranian , Baltic , and Slavic tribes. Southern Germany was inhabited by Celtic-speaking peoples, who belonged to the wider La Tène culture . They were later assimilated by the Germanic conquerors. Under Augustus ,

6072-416: The Lackawanna Iron & Coal Company in Scranton, Pennsylvania , had also investigated the process in Europe. He built a mill in 1876 using the Bessemer process for steel rails and quadrupled his production. Bessemer steel was used in the United States primarily for railroad rails. During the construction of the Brooklyn Bridge, a major dispute arose over whether crucible steel should be used instead of

6204-408: The Lower Paleolithic , with various tribes inhabiting it from the Neolithic onward, chiefly the Celts . Various Germanic tribes have inhabited the northern parts of modern Germany since classical antiquity . A region named Germania was documented before AD 100. In 962, the Kingdom of Germany formed the bulk of the Holy Roman Empire . During the 16th century, northern German regions became

6336-467: The Molotov–Ribbentrop Pact that divided Eastern Europe into German and Soviet spheres of influence. On 1 September 1939, Germany invaded Poland , beginning World War II in Europe ; Britain and France declared war on Germany on 3 September. In the spring of 1940, Germany conquered Denmark and Norway , the Netherlands , Belgium , Luxembourg , and France , forcing the French government to sign an armistice . The British repelled German air attacks in

6468-529: The Roman Empire began to invade lands inhabited by the Germanic tribes, creating a short-lived Roman province of Germania between the Rhine and Elbe rivers. In 9 AD, three Roman legions were defeated by Arminius in the Battle of the Teutoburg Forest . The outcome of this battle dissuaded the Romans from their ambition of conquering Germania and is thus considered one of the most important events in European history . By 100 AD, when Tacitus wrote Germania , Germanic tribes had settled along

6600-430: The Saarland in 1935, remilitarised the Rhineland in 1936, annexed Austria in 1938, annexed the Sudetenland in 1938 with the Munich Agreement , and in violation of the agreement occupied Czechoslovakia in March 1939. Kristallnacht (Night of Broken Glass) saw the burning of synagogues, the destruction of Jewish businesses, and mass arrests of Jewish people. In August 1939, Hitler's government negotiated

6732-415: The Siemens regenerative furnace in the 1850s, and claimed in 1857 to be recovering enough heat to save 70–80% of the fuel. This furnace operates at a high temperature by using regenerative preheating of fuel and air for combustion . In regenerative preheating, the exhaust gases from the furnace are pumped into a chamber containing bricks, where heat is transferred from the gases to the bricks. The flow of

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6864-450: The Triple Alliance of 1882 included Italy. Britain, France and Russia also concluded alliances to protect against Habsburg interference with Russian interests in the Balkans or German interference against France. At the Berlin Conference in 1884, Germany claimed several colonies including German East Africa , German South West Africa , Togoland , and Kamerun . Later, Germany further expanded its colonial empire to include holdings in

6996-409: The former East German states join the Federal Republic of Germany on 3 October 1990 . Germany has been described as a great power with a strong economy ; it has the largest economy in Europe by nominal GDP . As a global power in industrial, scientific and technological sectors, it is both the world's third-largest exporter and importer . As a developed country , it offers social security ,

7128-417: The inquisitorial Federal Court of Justice for civil and criminal cases, along with the Federal Labour Court , Federal Social Court , Federal Fiscal Court , and Federal Administrative Court for other matters. Criminal and private laws are codified on the national level in the Strafgesetzbuch and the Bürgerliches Gesetzbuch respectively. The German penal system seeks the rehabilitation of

7260-403: The iron by oxidation with air being blown through the molten iron. The oxidation also raises the temperature of the iron mass and keeps it molten. The modern process is named after its inventor, the Englishman Henry Bessemer , who took out a patent on the process in 1856. The process was said to be independently discovered in 1851 by the American inventor William Kelly though the claim

7392-428: The revolutions of 1848 in the German states , raising the German question. King Frederick William IV of Prussia was offered the title of emperor, but with a loss of power; he rejected the crown and the proposed constitution, a temporary setback for the movement. King William I appointed Otto von Bismarck as the Minister President of Prussia in 1862. Bismarck successfully concluded the war with Denmark in 1864 ;

7524-428: The "Evangelical" faith ( Lutheranism ), but also decreed that the faith of the prince was to be the faith of his subjects ( cuius regio, eius religio ). From the Cologne War through the Thirty Years' Wars (1618–1648), religious conflict devastated German lands and significantly reduced the population. The Peace of Westphalia ended religious warfare among the Imperial Estates . The legal system initiated by

7656-414: The Alps. Subsequently, the Holy Roman Empire emerged from it. The Ottonian rulers (919–1024) consolidated several major duchies . In 996, Gregory V became the first German Pope, appointed by his cousin Otto III , whom he shortly after crowned Holy Roman Emperor. The Holy Roman Empire absorbed northern Italy and Burgundy under the Salian emperors (1024–1125), although the emperors lost power through

7788-411: The Austrian Habsburg monarchy and the Kingdom of Prussia dominated German history. In 1772, 1793, and 1795, Prussia and Austria, along with the Russian Empire , agreed to the Partitions of Poland . During the period of the French Revolutionary Wars , the Napoleonic era and the subsequent final meeting of the Imperial Diet , most of the Free Imperial Cities were annexed by dynastic territories;

7920-467: The Catalan forge), finery forges , and puddling furnaces from its application. The open-hearth process is a batch process and a batch is called a "heat". The furnace is first inspected for possible damage. Once it is ready or repaired, it is charged with light scrap, such as sheet metal, shredded vehicles or waste metal. The furnace is heated using burning gas. Once the charge has melted, heavy scrap, such as building, construction or steel milling scrap

8052-419: The European Union . It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, and France , Luxembourg , Belgium , and the Netherlands to the west. The nation's capital and most populous city is Berlin and its main financial centre is Frankfurt ; the largest urban area is the Ruhr . Settlement in the territory of modern Germany began in

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8184-405: The Franks established the Frankish Kingdom and pushed east to subjugate Saxony and Bavaria . Areas of what is today eastern Germany were inhabited by Western Slavic tribes. Charlemagne founded the Carolingian Empire in 800; it was divided in 843 . The eastern successor kingdom of East Francia stretched from the Rhine in the west to the Elbe river in the east and from the North Sea to

8316-437: The German Bundestag , though they have never been part of the federal government. In the 2017 German federal election , the right-wing populist Alternative for Germany gained enough votes to attain representation in the parliament for the first time. Germany is a federation and comprises sixteen constituent states which are collectively referred to as Länder . Each state ( Land ) has its own constitution, and

8448-423: The German Democratic Republic, or East Germany . Berlin continued its de jure Four Power status . The Federal Republic of Germany was a founding member of the European Economic Community and the European Union , while the German Democratic Republic was a communist Eastern Bloc state and member of the Warsaw Pact . After the fall of the communist led-government in East Germany, German reunification saw

8580-428: The Holocaust , the German government persecuted minorities , including interning them in concentration and death camps across Europe. The regime systematically murdered 6 million Jews, at least 130,000 Romani , 275,000 disabled , thousands of Jehovah's Witnesses , thousands of homosexuals , and hundreds of thousands of political and religious opponents . Nazi policies in German-occupied countries resulted in

8712-507: The Pacific and China. The colonial government in South West Africa (present-day Namibia ), from 1904 to 1907, carried out the annihilation of the local Herero and Namaqua peoples as punishment for an uprising; this was the 20th century's first genocide . The assassination of Austria's crown prince on 28 June 1914 provided the pretext for Austria-Hungary to attack Serbia and trigger World War I . After four years of warfare, in which approximately two million German soldiers were killed,

8844-464: The Pacific. On 11 August 1919, President Friedrich Ebert signed the democratic Weimar Constitution . In the subsequent struggle for power, communists seized power in Bavaria , but conservative elements elsewhere attempted to overthrow the Republic in the Kapp Putsch . Street fighting in the major industrial centres, the occupation of the Ruhr by Belgian and French troops, and a period of hyperinflation followed. A debt restructuring plan and

8976-426: The Reichstag after a special election in 1932 and Hindenburg appointed Hitler as chancellor of Germany on 30 January 1933. After the Reichstag fire , a decree abrogated basic civil rights and the first Nazi concentration camp opened. On 23 March 1933, the Enabling Act gave Hitler unrestricted legislative power, overriding the constitution, and marked the beginning of Nazi Germany. His government established

9108-418: The Rhine and the Danube (the Limes Germanicus ), occupying most of modern Germany. However, Baden-Württemberg , southern Bavaria , southern Hesse and the western Rhineland had been incorporated into Roman provinces . Around 260, Germanic peoples broke into Roman-controlled lands. After the invasion of the Huns in 375, and with the decline of Rome from 395, Germanic tribes moved farther southwest:

9240-454: The Siemens regenerative furnace is the rapid production of large quantities of basic steel, used for example to construct high-rise buildings. The usual size of furnaces is 50 to 100 tons, but for some special processes they may have a capacity of 250 or even 500 tons. The Siemens–Martin process complemented rather than replaced the Bessemer process . It is slower and thus easier to control, allowing production of better product. It also permits

9372-453: The Soviets pushed into Eastern Europe ; the Western allies landed in France and entered Germany despite a final German counteroffensive . Following Hitler's suicide during the Battle of Berlin , Germany signed the surrender document on 8 May 1945, ending World War II in Europe and Nazi Germany. Following the end of the war, surviving Nazi officials were tried for war crimes at the Nuremberg trials . In what later became known as

9504-629: The United Kingdom and negotiate with the Bank of England on their behalf. Holley secured a license for Griswold and Winslow to use Bessemer's patented processes and returned to the United States in late 1863. The trio began setting up a mill in Troy, New York in 1865. The factory contained a number of Holley's innovations that greatly improved productivity over Bessemer's factory in Sheffield, and

9636-468: The United States. His A Treatise on Ordnance and Armor is an important work on contemporary weapons manufacturing and steel-making practices. In 1862, he visited Bessemer's Sheffield works, and became interested in licensing the process for use in the US. Upon returning to the US, Holley met with two iron producers from Troy, New York , John F. Winslow and John Augustus Griswold , who asked him to return to

9768-452: The blister steel bars were broken into pieces and melted in small crucibles, each containing 20 kg or so. This produced higher quality crucible steel but increased the cost. The Bessemer process reduced the time needed to make lower-grade steel to about half an hour while requiring only the coke needed initially to melt the pig iron. The earliest Bessemer converters produced steel for £7 a long ton , although it initially sold for around £40

9900-434: The blowing air, prevented Bessemer steel from being used for many structural applications. Open-hearth steel was suitable for structural applications. Steel greatly improved the productivity of railroads. Steel rails lasted ten times longer than iron rails. Steel rails, which became heavier as prices fell, could carry heavier locomotives, which could pull longer trains. Steel rail cars were longer and were able to increase

10032-594: The cause of this was the lack of trained personnel and investment in technology rather than anything intrinsic to the process itself. For example, one of the major causes of the decline of the giant ironmaking company Bolckow Vaughan of Middlesbrough was its failure to upgrade its technology. The basic process, the Thomas-Gilchrist process, remained in use longer, especially in Continental Europe, where iron ores were of high phosphorus content and

10164-922: The centre of the Protestant Reformation . Following the Napoleonic Wars and the dissolution of the Holy Roman Empire in 1806, the German Confederation was formed in 1815. Formal unification of Germany into the modern nation-state commenced on 18 August 1866 with the North German Confederation Treaty establishing the Prussia -led North German Confederation , which became the German Empire in 1871. After World War I and

10296-602: The cheaper Bessemer steel. In 1877, Abram Hewitt wrote a letter urging against the use of Bessemer steel in the construction of the Brooklyn Bridge . Bids had been submitted for both crucible steel and Bessemer steel; John A. Roebling's Sons submitted the lowest bid for Bessemer steel, but at Hewitt's direction, the contract was awarded to J. Lloyd Haigh Co. Using the Bessemer process, it took between 10 and 20 minutes to convert three to five tons of iron into steel – it would previously take at least

10428-530: The communist-controlled Socialist Unity Party of Germany , supported by the Stasi , an immense secret service. While East German propaganda was based on the benefits of the GDR's social programmes and the alleged threat of a West German invasion, many of its citizens looked to the West for freedom and prosperity. The Berlin Wall , built in 1961, prevented East German citizens from escaping to West Germany, becoming

10560-595: The constitutional structure of the Empire and codified the election of the emperor by seven prince-electors . Johannes Gutenberg introduced moveable-type printing to Europe, laying the basis for the democratization of knowledge . In 1517, Martin Luther incited the Protestant Reformation and his translation of the Bible began the standardization of the language; the 1555 Peace of Augsburg tolerated

10692-475: The conversion — clay linings may be used when there is little phosphorus in the raw material, and Bessemer himself used ganister sandstone – this is known as the acid Bessemer process. When the phosphorus content is high, dolomite , or sometimes magnesite , linings are required in the basic Bessemer limestone process, see below . In order to produce steel with desired properties, additives such as spiegeleisen (a ferromanganese alloy), can be added to

10824-466: The country's GDP, well below the NATO target of 2%. In 2024, Germany reported $ 97.7 billion to NATO, exceeding the NATO target of 2% at 2.12% of GDP. Bessemer process The Bessemer process was the first inexpensive industrial process for the mass production of steel from molten pig iron before the development of the open hearth furnace . The key principle is removal of impurities from

10956-469: The creation of a new currency in 1924 ushered in the Golden Twenties , an era of artistic innovation and liberal cultural life. The worldwide Great Depression hit Germany in 1929. Chancellor Heinrich Brüning 's government pursued a policy of fiscal austerity and deflation which caused unemployment of nearly 30% by 1932. The Nazi Party led by Adolf Hitler became the largest party in

11088-472: The creation of a more unified European political, economic and security apparatus. The governments of Germany and the United States are close political allies . Cultural ties and economic interests have crafted a bond between the two countries resulting in Atlanticism . After 1990, Germany and Russia worked together to establish a "strategic partnership" in which energy development became one of

11220-536: The criminal and the protection of the public. With the exceptions of petty crimes, tried by a single professional judge, and of serious political crimes, all charges are adjudicated by mixed tribunals where lay judges ( Schöffen ) and professional judges preside together. As of 2016, Germany's murder rate stood at a low of 1.18 murders per 100,000. In 2018, the overall crime rate fell to its lowest since 1992. Same-sex marriage has been legal in Germany since 2017, and LGBT rights are generally protected in

11352-461: The deaths of an estimated 2.7 million Poles , 1.3 million Ukrainians , 1 million Belarusians and 3.5 million Soviet prisoners of war . German military casualties have been estimated at 5.3 million, and around 900,000 German civilians died. Around 12 million ethnic Germans were expelled from across Eastern Europe, and Germany lost roughly one-quarter of its pre-war territory. After Nazi Germany surrendered,

11484-520: The district of Handsworth in Sheffield . This process had an enormous impact on the quantity and quality of steel production, but it was unrelated to the Bessemer-type process employing decarburization. The Japanese may have made use of a Bessemer-type process, which was observed by European travellers in the 17th century. The adventurer Johan Albrecht de Mandelslo describes the process in

11616-507: The earliest center where this was practiced was the great iron-production district along the Henan – Hebei border during the 11th century. In the 15th century, the finery process , another process which shares the air-blowing principle with the Bessemer process, was developed in Europe. In 1740, Benjamin Huntsman developed the crucible technique for steel manufacture, at his workshop in

11748-641: The early 1950s. West Germany joined NATO in 1955 and was a founding member of the European Economic Community . On 1 January 1957, the Saarland joined West Germany. East Germany was an Eastern Bloc state under political and military control by the Soviet Union via occupation forces and the Warsaw Pact . Although East Germany claimed to be a democracy, political power was exercised solely by leading members ( Politbüro ) of

11880-643: The early 1990s, not least because of their slow operation, being replaced by the basic oxygen furnace or electric arc furnace . Whereas the earliest example of open-hearth steelmaking is found about 2000 years ago in the culture of the Haya people , in present day Tanzania , and in Europe in the Catalan forge , invented in Spain in the 8th century, it is usual to confine the term to certain 19th-century and later steelmaking processes, thus excluding bloomeries (including

12012-648: The ecclesiastical territories were secularised and annexed. In 1806 the Imperium was dissolved; France, Russia, Prussia, and the Habsburgs (Austria) competed for hegemony in the German states during the Napoleonic Wars . Following the fall of Napoleon , the Congress of Vienna founded the German Confederation, a loose league of 39 sovereign states . The appointment of the emperor of Austria as

12144-558: The four to whom he refunded the license fees. However, they subsequently rescinded their license in 1858 in return for the opportunity to invest in a partnership with Bessemer and others. This partnership began to manufacture steel in Sheffield from 1858, initially using imported charcoal pig iron from Sweden . This was the first commercial production. A 20% share in the Bessemer patent was also purchased for use in Sweden and Norway by Swedish trader and Consul Göran Fredrik Göransson during

12276-473: The freight to car weight from 1:1 to 2:1. As early as 1895 in the UK it was being noted that the heyday of the Bessemer process was over and that the open hearth method predominated. The Iron and Coal Trades Review said that it was "in a semi-moribund condition. Year after year, it has not only ceased to make progress, but it has absolutely declined." It has been suggested, both at that time and more recently, that

12408-428: The furnace is then reversed so that fuel and air pass through the chamber and are heated by the bricks. Through this method, an open-hearth furnace can reach temperatures high enough to melt steel, but Siemens did not initially use it for that. In 1865, the French engineer Pierre-Émile Martin took out a license from Siemens and first applied his regenerative furnace for making steel. The most appealing characteristic of

12540-617: The government was completed in 1999, and modernisation of the East German economy was scheduled to last until 2019. Since reunification, Germany has taken a more active role in the European Union , signing the Maastricht Treaty in 1992 and the Lisbon Treaty in 2007, and co-founding the eurozone . Germany sent a peacekeeping force to secure stability in the Balkans and sent German troops to Afghanistan as part of

12672-572: The growth of the United States as a major world steel producer. Using the Bessemer process, Carnegie Steel was able to reduce the costs of steel railroad rails from $ 100 per ton to $ 50 per ton between 1873 and 1875. The price of steel continued to fall until Carnegie was selling rails for $ 18 per ton by the 1890s. Prior to the opening of Carnegie's Thomson Works, steel output in the United States totaled around 157,000 tons per year. By 1910, American companies were producing 26 million tons of steel annually. William Walker Scranton , manager and owner of

12804-432: The impurities were burned off but just the right amount of carbon remained. However, despite spending tens of thousands of pounds on experiments, he could not find the answer. Certain grades of steel are sensitive to the 78% nitrogen which was part of the air blast passing through the steel. The solution was first discovered by English metallurgist Robert Forester Mushet , who had carried out thousands of experiments in

12936-402: The impurity of the fuel source. Thus, with the advent of this technology, coal began to replace charcoal fuel. The Bessemer process allowed steel to be produced without fuel, using the impurities of the iron to create the necessary heat. This drastically reduced the costs of steel production, but raw materials with the required characteristics could be difficult to find. High-quality steel

13068-742: The largest steel mill in the world that still produces steel using the Open-Hearth Furnaces is the Zaporizhstal steel mill in central Ukraine - which has seven 500-ton capacity OHF's as well as four blast furnaces. The availability of fuel oil in large, cheap quantities, as well as the ongoing invasion largely contribute to their profitability despite the slow process and well as the prohibitively high cost of upgrading to new furnace technologies. Germany – in Europe  (light green & dark grey) – in

13200-492: The melting and refining of large amounts of scrap steel, further lowering steel production costs and recycling an otherwise troublesome waste material. One of its important drawbacks is that melting and refining a charge takes several hours. This was an advantage in the early 20th century, as it gave plant chemists time to analyze the steel and decide how much longer to refine it. But by about 1975, electronic instruments such as atomic absorption spectrophotometers had made analysis of

13332-406: The molten steel once the impurities have been removed. When the required steel had been formed, it was poured into ladles and then transferred into moulds while the lighter slag was left behind. The conversion process, called the "blow", was completed in approximately 20 minutes. During this period, the progress of the oxidation of the impurities was judged by the appearance of the flame issuing from

13464-477: The most important factors. As a result of the cooperation, Germany imported most of its natural gas and crude oil from Russia. Germany's development policy functions as a distinct sector within its foreign policy framework. It is formulated by the Federal Ministry for Economic Cooperation and Development and carried out by the implementing organisations. The German government sees development policy as

13596-406: The mouth of the converter. The modern use of photoelectric methods of recording the characteristics of the flame greatly aided the blower in controlling final product quality. After the blow, the liquid metal was recarburized to the desired point and other alloying materials were added, depending on the desired product. A Bessemer converter could treat a "heat" (batch of hot metal) of 5 to 30 tons at

13728-660: The nation. Germany has a network of 227 diplomatic missions abroad and maintains relations with more than 190 countries. Germany is a member of NATO , the OECD , the G7 , the G20 , the World Bank and the IMF . It has played an influential role in the European Union since its inception and has maintained a strong alliance with France and all neighbouring countries since 1990. Germany promotes

13860-660: The north, Poland and Czechia to the east, Austria and Switzerland to the south, and France , Luxembourg , Belgium , and the Netherlands to the west. Germany is also bordered by the North Sea and, at the north-northeast, by the Baltic Sea. German territory covers 357,596 km (138,069 sq mi). Elevation ranges from the mountains of the Alps (highest point: the Zugspitze at 2,963 metres or 9,721 feet) in

13992-456: The open-hearth furnace. It rapidly superseded both the Bessemer and Siemens–Martin processes in western Europe by the 1950s and in eastern Europe by the 1980s. Open-hearth steelmaking had superseded the Bessemer process in UK by 1900, but elsewhere in Europe, especially in Germany, the Bessemer and Thomas processes were used until the late 1960s when they were superseded by basic oxygen steelmaking. The last open-hearth furnace in former East Germany

14124-459: The open-hearth process was not able to remove all phosphorus; almost all inexpensive construction steel in Germany was produced with this method in the 1950s and 1960s. It was eventually superseded by basic oxygen steelmaking . In the U.S., commercial steel production using this method stopped in 1968. It was replaced by processes such as the basic oxygen (Linz–Donawitz) process , which offered better control of final chemistry. The Bessemer process

14256-471: The owners gave a successful public exhibition in 1867. The Troy factory attracted the attention of the Pennsylvania Railroad , which wanted to use the new process to manufacture steel rail. It funded Holley's second mill as part of its Pennsylvania Steel subsidiary. Between 1866 and 1877, the partners were able to license a total of 11 Bessemer steel mills. One of the investors they attracted

14388-613: The party system has been dominated by the Christian Democratic Union and the Social Democratic Party of Germany . So far every chancellor has been a member of one of these parties. However, the smaller liberal Free Democratic Party and the Alliance 90/The Greens have also been junior partners in coalition governments . Since 2007, the democratic socialist party The Left has been a staple in

14520-402: The patent for his process to four ironmasters , for a total of £27,000, but the licensees failed to produce the quality of steel he had promised—it was "rotten hot and rotten cold", according to his friend, William Clay —and he later bought them back for £32,500. His plan had been to offer the licenses to one company in each of several geographic areas, at a royalty price per ton that included

14652-677: The people' (see also the Latinised form Theodiscus ), derived from * þeudō , descended from Proto-Indo-European * tewtéh₂- 'people', from which the word Teutons also originates. Pre-human ancestors, the Danuvius guggenmosi , who were present in Germany over 11 million years ago, are theorized to be among the earliest ones to walk on two legs. Ancient humans were present in Germany at least 600,000 years ago. The first non-modern human fossil (the Neanderthal )

14784-507: The peoples east of the Rhine . The German term Deutschland , originally diutisciu land ('the German lands'), is derived from deutsch ( cf. Dutch ), descended from Old High German diutisc 'of the people' (from diot or diota 'people'), originally used to distinguish the language of the common people from Latin and its Romance descendants . This in turn descends from Proto-Germanic * þiudiskaz 'of

14916-477: The permanent president reflected the Congress's rejection of Prussia 's rising influence. Disagreement within restoration politics partly led to the rise of liberal movements, followed by new measures of repression by Austrian statesman Klemens von Metternich . The Zollverein , a tariff union, furthered economic unity. In light of revolutionary movements in Europe , intellectuals and commoners started

15048-650: The process is likely derived from accounts of other Europeans who had traveled to Japan. Wagner believes that the Japanese process may have been similar to the Bessemer process, but cautions that alternative explanations are also plausible. In the early to mid-1850s, the American inventor William Kelly experimented with a method similar to the Bessemer process. Wagner writes that Kelly may have been inspired by techniques introduced by Chinese ironworkers hired by Kelly in 1854. The claim that both Kelly and Bessemer invented

15180-409: The same process remains controversial. When Bessemer's patent for the process was reported by Scientific American , Kelly responded by writing a letter to the magazine. In the letter, Kelly states that he had previously experimented with the process and claimed that Bessemer knew of Kelly's discovery. He wrote that "I have reason to believe my discovery was known in England three or four years ago, as

15312-588: The scale and speed of production of this vital raw material. The process also decreased the labor requirements for steel-making. Before it was introduced, steel was far too expensive to make bridges or the framework for buildings and thus wrought iron had been used throughout the Industrial Revolution . After the introduction of the Bessemer process, steel and wrought iron became similarly priced, and some users, primarily railroads, turned to steel. Quality problems, such as brittleness caused by nitrogen in

15444-659: The south to the shores of the North Sea ( Nordsee ) in the northwest and the Baltic Sea ( Ostsee ) in the northeast. The forested uplands of central Germany and the lowlands of northern Germany (lowest point: in the municipality Neuendorf-Sachsenbande , Wilstermarsch at 3.54 metres or 11.6 feet below sea level ) are traversed by such major rivers as the Rhine, Danube and Elbe. Significant natural resources include iron ore, coal, potash , timber, lignite , uranium , copper, natural gas, salt, and nickel. Most of Germany has

15576-974: The southeast regions have more extreme temperatures. From February 2019 – 2020, average monthly temperatures in Germany ranged from a low of 3.3 °C (37.9 °F) in January 2020 to a high of 19.8 °C (67.6 °F) in June 2019. Average monthly precipitation ranged from 30 litres per square metre in February and April 2019 to 125 litres per square metre in February 2020. Average monthly hours of sunshine ranged from 45 in November 2019 to 300 in June 2019. The territory of Germany can be divided into five terrestrial ecoregions : Atlantic mixed forests , Baltic mixed forests , Central European mixed forests , Western European broadleaf forests , and Alps conifer and mixed forests . As of 2016 , 51% of Germany's land area

15708-542: The steel much easier and faster. The work environment around an open-hearth furnace is said to be extremely dangerous, although that may be even more true of the environment around a basic oxygen or electric arc furnace. On the one hand, the process achieves lesser economies of scale than the Bessemer, so its steel was costlier in former's heyday, but on the other, it was more suitable for countries which couldn't produce lots of steel anyway due to limitations of natural resources. Basic oxygen steelmaking eventually replaced

15840-762: The subsequent decisive Prussian victory in the Austro-Prussian War of 1866 enabled him to create the North German Confederation which excluded Austria . After the defeat of France in the Franco-Prussian War , the German princes proclaimed the founding of the German Empire in 1871. Prussia was the dominant constituent state of the new empire; the King of Prussia ruled as its Kaiser, and Berlin became its capital. In

15972-422: The time, steel was used to make only small items like cutlery and tools, but was too expensive for cannons. Starting in January 1855, he began working on a way to produce steel in the massive quantities required for artillery and by October he filed his first patent related to the Bessemer process. He patented the method a year later in 1856. William Kelley was awarded priority patent in 1857. Bessemer licensed

16104-621: Was Andrew Carnegie , who saw great promise in the new steel technology after a visit to Bessemer in 1872, and saw it as a useful adjunct to his existing businesses, the Keystone Bridge Company and the Union Iron Works. Holley built the new steel mill for Carnegie, and continued to improve and refine the process. The new mill, known as the Edgar Thomson Steel Works , opened in 1875, and started

16236-547: Was burnt for each ton of steel produced. Such steel when rolled into bars was sold at £50 to £60 (approximately £3,390 to £4,070 in 2008) a long ton . The most difficult and work-intensive part of the process, however, was the production of wrought iron done in finery forges in Sweden. This process was refined in the 18th century with the introduction of Benjamin Huntsman 's crucible steel -making techniques, which added an additional three hours firing time and required additional large quantities of coke. In making crucible steel,

16368-647: Was discovered in the Neander Valley . Similarly dated evidence of modern humans has been found in the Swabian Jura , including 42,000-year-old flutes which are the oldest musical instruments ever found, the 40,000-year-old Lion Man , and the 41,000-year-old Venus of Hohle Fels . The Nebra sky disk , created during the European Bronze Age , has been attributed to a German site. The Germanic peoples are thought to have emerged from

16500-417: Was far too small for the industrial-scale production needed. In 1862 Göransson built a new factory for his Högbo Iron and Steel Works company on the shore of Lake Storsjön, where the town of Sandviken was founded. The company was renamed Sandviken's Ironworks, continued to grow and eventually became Sandvik in the 1970s. Alexander Lyman Holley contributed significantly to the success of Bessemer steel in

16632-482: Was inexpensive. Use of electric arc furnace technology competed favourably with the Bessemer process resulting in its obsolescence. Basic oxygen steelmaking is essentially an improved version of the Bessemer process (decarburization by blowing oxygen as gas into the heat rather than burning the excess carbon away by adding oxygen carrying substances into the heat). The advantages of pure oxygen blast over air blast were known to Henry Bessemer, but 19th-century technology

16764-414: Was inspired by a conversation with Napoleon III in 1854 pertaining to the steel required for better artillery. Bessemer claimed that it "was the spark which kindled one of the greatest revolutions that the present century had to record, for during my solitary ride in a cab that night from Vincennes to Paris, I made up my mind to try what I could to improve the quality of iron in the manufacture of guns." At

16896-449: Was made by the reverse process of adding carbon to carbon-free wrought iron , usually imported from Sweden . The manufacturing process, called the cementation process , consisted of heating bars of wrought iron together with charcoal for periods of up to a week in a long stone box. This produced blister steel . The blister steel was put in a crucible with wrought iron and melted, producing crucible steel . Up to 3 tons of expensive coke

17028-648: Was shut down in 2001. The process in the form of Twin Hearth Furnace was in use in India's Steel Authority of India Bhilai Steel Plant and some parts of Ukraine. Russia retired its last hearth furnace in March 2018, and was considering preserving it as a museum artifact. India's SAIL shut it down in April 2020 with the advent of COVID19 because of nonavailability of manpower to run the labor intensive process. As of 2024,

17160-418: Was so fast (10–20 minutes for a heat) that it allowed little time for chemical analysis or adjustment of the alloying elements in the steel. Bessemer converters did not remove phosphorus efficiently from the molten steel; as low-phosphorus ores became more expensive, conversion costs increased. The process permitted only limited amount of scrap steel to be charged, further increasing costs, especially when scrap

17292-465: Was stopped in 1993. In the US, steel production using the Bessemer process ended in 1968 and the open-hearth furnaces had stopped by 1992. In Hunedoara steel works , Romania the last 420-tonne capacity open-hearth furnace was shut down on 12 June 1999 and demolished and scrapped between 2001 and 2003, but the eight smokestacks of the furnaces remained until February 2011. The last open-hearth shop in China

17424-444: Was the seventh-highest in the world . In response to the 2022 Russian invasion of Ukraine , Chancellor Olaf Scholz announced that German military expenditure would be increased past the NATO target of 2%, along with a one-time 2022 infusion of 100 billion euros, representing almost double the 53 billion euro military budget for 2021. In 2023, military spending according to NATO criteria amounted to $ 73.1 billion, or 1.64% of

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