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131-654: The Riverside Quarter , or Riverside Exchange is one of Sheffield 's 11 designated City Centre Quarters . Its borders are West Bar, Coulston Street, Bridge Street, Castlegate, Exchange Place and the Parkway to its south, the Wicker Viaduct , Johnson Street, Spitalfields and Nursery Street to the North, and Corporation Street to the west. It is named after the Whitbread Exchange Brewery, which

262-556: A temperate oceanic climate ( Cfb ) like the rest of the United Kingdom. The uplands of the Pennines to the west can create a cool, gloomy and wet environment, but they also provide shelter from the prevailing westerly winds, casting a " rain shadow " across the area. Between 1971 and 2000 Sheffield averaged 824.7 mm (32.47 in) of rain per year; December was the wettest month with 91.9 mm (3.62 in) and July

393-665: A 2% decline from the 1991 census. The city is part of the wider Sheffield urban area , which had a population of 640,720. In 2011 the racial composition of Sheffield's population was 84% White (81% White British , 0.5% White Irish , 0.1% Romani or Irish Traveller , 2.3% Other White ), 2.4% of mixed race (1.0% White and Black Caribbean, 0.2% White and Black African, 0.6% White and Asian, 0.6% Other Mixed), 8% Asian (1.1% Indian , 4% Pakistani , 0.6% Bangladeshi , 1.3% Chinese , 1.0% Other Asian), 3.6% Black (2.1% African, 1% Caribbean , 0.5% Other Black ), 1.5% Arab and 0.7% of other ethnic heritage. In terms of religion, 53% of

524-582: A 2008 report showed that the climate of Sheffield is warming faster than it has at any time during this period, with 1990 and 2006 being the hottest years on record. In collaboration with the Stockholm Environment Institute , Sheffield developed a carbon footprint (based on 2004–05 consumption figures) of 5,798,361  tonnes per year. This compares to the UK's total carbon footprint of 698,568,010 tonnes per year. The factors with

655-483: A Labour MP for the first time in its history. Sheffield is located at 53°22′59″N 1°27′57″W  /  53.38297°N 1.4659°W  / 53.38297; -1.4659 . It lies directly beside Rotherham , from which it is separated largely by the M1 motorway . Although Barnsley Metropolitan Borough also borders Sheffield to the north, the town itself is a few miles further away. The southern and western borders of

786-462: A better steel for clock springs. In Handsworth near Sheffield , he began producing steel in 1740 after years of experimenting in secret. Huntsman's system used a coke -fired furnace capable of reaching 1,600 °C, into which up to twelve clay crucibles, each capable of holding about 15 kg of iron, were placed. When the crucibles or "pots" were white-hot, they were charged with lumps of blister steel , an alloy of iron and carbon produced by

917-413: A delicately intermediate carbon fraction, and its material properties range according to the carbon percentage: high carbon steel is stronger but more brittle than low carbon steel . Crucible steel sequesters the raw input materials from the heat source, allowing precise control of carburization (raising) or decarburization (lowering carbon content). Fluxes , such as limestone , could be added to

1048-468: A long time, the carbon content of the pig iron could be reduced as it slowly diffused into the iron, turning both into steel. Crucible steel of this type was produced in South and Central Asia during the medieval era . This generally produced a very hard steel, but also a composite steel that was inhomogeneous, consisting of a very high-carbon steel (formerly the pig-iron) and a lower-carbon steel (formerly

1179-601: A means of efficiently changing excess wrought iron into useful steel. Huntsman's process greatly increased the European output of quality steel suitable for use in items like knives, tools, and machinery, helping to pave the way for the Industrial Revolution . Iron alloys are most broadly divided by their carbon content: cast iron has 2–4% carbon impurities; wrought iron oxidizes away most of its carbon, to less than 0.1%. The much more valuable steel has

1310-468: A move to online shopping, which had increased because of the COVID-19 pandemic . John Lewis received £3 million of public funding from Sheffield City Council in 2020 to keep the local store open. The local Debenhams branches are expected to re-open after the lifting of the 2021 COVID-19 lockdown restrictions, but only to clear existing stock, after which it is expected the stores will close. With

1441-604: A public space to link these two areas, the Millennium Square , was opened in May 2006. Additional developments included the remodelling of Sheaf Square , in front of the refurbished railway station: the square contains "The Cutting Edge", a sculpture designed by Si Applied Ltd and made from Sheffield steel. Recent development known as the 'Heart of the City' includes the restoration of the listed Leah's Yard complex. Sheffield

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1572-552: A rich history of crucible steel production, beginning during the late 1st millennium CE. From the sites in modern Uzbekistan and Merv in Turkmenistan, there is good archaeological evidence for the large scale production of crucible steel. They all belong in broad terms to the same early medieval period between the late 8th or early 9th and the late 12th century CE, contemporary with the early crusades . The two most prominent crucible steel sites in eastern Uzbekistan carrying

1703-567: A variation of the wootz process, after the location of the process documented by Voysey in the 1820s. The production of crucible steel in China began around the first century BC, or possibly earlier. The Chinese developed a method of producing pig iron around 1200 BC, which they used to make cast iron . By the first century BC, they had developed puddling to produce mild steel and a process of rapidly decarburizing molten cast-iron to make wrought iron by stirring it atop beds of saltpeter (called

1834-514: A very hard edge, but the lower-carbon steel helped to increase the toughness, helping to decrease the chance of chipping, cracking, or breaking. In Europe, crucible steel was developed by Benjamin Huntsman in England in the 18th century. Huntsman used coke rather than coal or charcoal, achieving temperatures high enough to melt steel and dissolve iron. Huntsman's process differed from some of

1965-475: Is Labour 36, Liberal Democrats 27, the Green Party 14, Conservative 0 and Independent 7. The city also has a Lord Mayor ; though now simply a ceremonial position, in the past the office carried considerable authority, with executive powers over the finances and affairs of the city council. The position of Lord Mayor is elected on an annual basis. For much of its history the council was controlled by

2096-647: Is a corruption of shed or sheth , which refers to a divide or separation . The second half of the name Sheffield refers to a field, or forest clearing. Combining the two words, it is believed that the name refers to an Anglo-Saxon settlement in a clearing by the confluence of the River Don and River Sheaf. [REDACTED] Kingdom of England c. 12th century–1707 [REDACTED] Kingdom of Great Britain 1707–1801 [REDACTED] United Kingdom of Great Britain and Ireland 1801–1922 [REDACTED] United Kingdom 1922–present The area now occupied by

2227-476: Is also related to other efforts to rejuvenate the Fargate area, such as a new mixed-use events and coworking hub at 20–26 Fargate, also overseen by Sheffield City Council. Crucible steel Crucible steel is steel made by melting pig iron ( cast iron ), iron , and sometimes steel , often along with sand , glass , ashes , and other fluxes , in a crucible . Crucible steel was first developed in

2358-568: Is greater than that of the broader region of Yorkshire and the Humber. Sheffield had a population of 556,500 at the 2021 census, making it the second largest city in the Yorkshire and the Humber region. The Sheffield Built-up Area , of which the Sheffield sub-division is the largest part, had a population of 685,369 also including the town of Rotherham . The district borough , governed from

2489-676: Is particularly well known, is from 1297 when a tax return for 'Robert the Cutler' was submitted. A key reason for Sheffield's success in the production of cutlery lies in its geographic makeup. The abundance of streams in the area provided water power and the geological formations in the Hope Valley , in particular, provided sufficient grit stones for grinding wheels. In the 17th century, the Company of Cutlers in Hallamshire , which oversaw

2620-542: Is the sole remaining independent steel works in the world and dominates the north-east of Sheffield around the Lower Don Valley . The firm has a global reputation for producing the largest and most complex steel forgings and castings and is certified to produce critical nuclear components, with recent projects including the Royal Navy 's Astute -class submarines. The firm also has the capacity for pouring

2751-847: The Advanced Manufacturing Park , situated just over the boundary in the borough of Rotherham, by Sheffield's universities and other independent research organisations. Organisations located on the AMP include the Advanced Manufacturing Research Centre (AMRC, a research partnership between the Boeing Company and the University of Sheffield ), Castings Technology International (CTI), The Welding Institute (TWI), Rolls-Royce plc and McLaren Automotive . Forgemasters , founded in 1805,

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2882-677: The City Lofts Tower and accompanying St Paul's Place , Velocity Living and the Moor redevelopment, the forthcoming NRQ and the Winter Gardens , Peace Gardens , Millennium Galleries and many projects completed under the Sheffield One redevelopment agency. The Sheffield economy grew from £5.6 billion in 1997 (1997 GVA ) to £9.2 billion in 2007 (2007 GVA). The "UK Cities Monitor 2008" placed Sheffield among

3013-529: The Heaton process , it was independently discovered by John Heaton in the 1860s). Around this time, the Chinese began producing crucible steel to convert excess quantities of cast iron and wrought iron into steel suitable for swords and weapons. In 1064, Shen Kuo , in his book Dream Pool Essays , gave the earliest written description of the patterns in the steel, the methods of sword production, and some of

3144-663: The House of Wessex . After the Norman conquest of England , Sheffield Castle was built to protect the local settlements, and a small town developed that is the nucleus of the modern city. By 1296, a market had been established at what is now known as Castle Square , and Sheffield subsequently grew into a small market town . In the 14th century, Sheffield was already noted for the production of knives , as mentioned in Geoffrey Chaucer 's The Canterbury Tales , and by

3275-401: The Industrial Revolution , developing many significant technologies. In the 19th century, the city saw a huge expansion of its traditional cutlery trade, when processes for high-quality stainless steel and crucible steel were invented based on previous discoveries elsewhere. This fuelled an almost tenfold increase in the population. Sheffield received its municipal charter in 1843, becoming

3406-686: The Loxley , the Porter Brook , the Rivelin and the Sheaf . Sixty-one per cent of Sheffield's entire area is green space and a third of the city lies within the Peak District national park and is the fifth largest city in England. There are more than 250 parks, woodlands and gardens in the city, which is estimated to contain around 4.5 million trees. Sheffield played a crucial role in

3537-666: The River Sheaf which runs through it. The city serves as the administrative centre of the City of Sheffield . It is historically part of the West Riding of Yorkshire and some of its southern suburbs were transferred from Derbyshire to the city council. It is the largest settlement in South Yorkshire. The city is in the eastern foothills of the Pennines and the valleys of the River Don with its four tributaries:

3668-527: The Royal Navy . While iron and steel have long been the main industries of Sheffield, coal mining has also been a major industry, particularly in the outlying areas, and the Palace of Westminster in London was built using limestone from quarries in the nearby village of Anston . Sheffield has a large public sector workforce, numbering 77,500 workers. During the period 1995 – 2008 (a period of growth for

3799-844: The Sheffield Arena , Don Valley Stadium and the Ponds Forge complex. Sheffield is changing rapidly as new projects regenerate some of the more run-down parts of the city. One such, the Heart of the City Project , has initiated a number of public works in the city centre: the Peace Gardens were renovated in 1998, the Millennium Galleries opened in April 2001, the Winter Gardens were opened in May 2003, and

3930-616: The Sheffield Blitz . The city was partially protected by barrage balloons managed from RAF Norton . More than 660 people died and many buildings were destroyed or left badly damaged, including the Marples Hotel, which was hit directly by a 500lb bomb, killing over 70 people. In the 1950s and 1960s, many of the city's slums were demolished, and replaced with housing schemes such as the Park Hill flats . Large parts of

4061-832: The Wortley Rural District . This area includes a significant part of the countryside surrounding the main urban region. Roughly a third of Sheffield lies in the Peak District National Park . No other English city had parts of a national park within its boundary, until the creation in March 2010 of the South Downs National Park , part of which lies within Brighton and Hove . According to the Köppen classification , Sheffield has

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4192-442: The cementation process , and a flux to help remove impurities. The pots were removed after about 3 hours in the furnace, impurities in the form of slag skimmed off, and the molten steel poured into moulds to end up as cast ingots . Complete melting of the steel produced a highly uniform crystal structure upon cooling, which gave the metal increased tensile strength and hardness in comparison with other steels being made at

4323-675: The 'pine tree design'. If you cook a fish fully and remove its bones, the shape of its guts will be seen to be like the lines on a 'snake-coiling sword'. The first European references to crucible steel seem to be no earlier than the Post Medieval period. European experiments with “ Damascus ” steels go back to at least the sixteenth century, but it was not until the 1790s that laboratory researchers began to work with steels that were specifically known to be Indian/wootz. At this time, Europeans knew of India's ability to make crucible steel from reports brought back by travellers who had observed

4454-515: The 18th century, and was dubbed " Steel City ". Many innovations in these fields have been made in Sheffield, for example Benjamin Huntsman discovered the crucible technique in the 1740s at his workshop in Handsworth . This process was rendered obsolete in 1856 by Henry Bessemer 's invention of the Bessemer converter . Thomas Boulsover invented Sheffield plate (silver-plated copper) in

4585-594: The 3rd century CE, particularly in Scandinavia . Swords bearing the brand name Ulfberht , and dating to a 200-year period from the 9th century to the early 11th century, are prime examples of the technique. It is speculated by many that the process of making these blades originated in the Middle East and subsequently had been traded during the Volga Trade Route days. In the first centuries of

4716-449: The 52.0 sq mi (134.7 km ) of national park and 4.20 sq mi (10.9 km ) of water this means that 61% of the city is greenspace . Despite this, about 64% of Sheffield householders live further than 300 m (328 yd) from their nearest greenspace, although access is better in less affluent neighbourhoods across the city. Sheffield also has a very wide variety of habitat , comparing favourably with any city in

4847-756: The City of Sheffield in 1893. International competition in iron and steel caused a decline in these industries in the 1970s and 1980s, coinciding with the collapse of coal mining in the area. The Yorkshire ridings became counties in their own right in 1889; the West Riding of Yorkshire county was disbanded in 1974. The city then became part of the county of South Yorkshire ; this has been made up of separately-governed unitary authorities since 1986. The 21st century has seen extensive redevelopment in Sheffield, consistent with other British cities. Sheffield's gross value added (GVA) has increased by 60% since 1997, standing at £11.3 billion in 2015. The economy has experienced steady growth, averaging around 5% annually, which

4978-484: The City of Sheffield is 548 m (1,798 ft) near High Stones and Margery Hill . The city's lowest point is just 29 m (95 ft) above sea level near Blackburn Meadows . However, 79% of the housing in the city is between 100 and 200 m (330 and 660 ft) above sea level and the highest residential street is Redmires Lane at 302 m (991 ft). This variation of altitudes across Sheffield has led to frequent claims, particularly among locals, that

5109-628: The City of Sheffield is believed to have been inhabited since at least the late Upper Paleolithic , about 12,800 years ago. The earliest evidence of human occupation in the Sheffield area was found at Creswell Crags to the east of the city. In the Iron Age the area became the southernmost territory of the Pennine tribe called the Brigantes . It is this tribe who are thought to have constructed several hill forts in and around Sheffield. Following

5240-623: The Environment Agency to clear local river channels since the 2007 event. In 2014 Sheffield Council's cabinet approved plans to further reduce the possibility of flooding by adopting plans to increase water catchment on tributaries of the River Don. Another flood hit the city in 2019 , resulting in shoppers being contained in Meadowhall Shopping Centre. Between 2014 and 2018, there were disputes between

5371-633: The Ferghana Process are Akhsiket and Pap in the Ferghana Valley, whose position within the Great Silk Road has been historically and archaeologically proved. The material evidence consists of large number of archaeological finds relating to steel making from 9th–12th centuries CE in the form of hundreds of thousands of fragments of crucibles, often with massive slag cakes. Archaeological work at Akhsiket, has identified that

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5502-626: The Indian/Sri Lankan material is as early as 300 BCE. India's iron ore had trace vanadium and other alloying elements leading to increased hardenability in Indian crucible steel which was famous throughout the middle east for its ability to retain an edge. While crucible steel is more attributed to the Middle East in early times, pattern welded swords, incorporating high-carbon, and likely crucible steel, have been discovered in Europe, from

5633-604: The Islamic period, some scientific studies on swords and steel appeared. The best known of these are by Jabir ibn Hayyan 8th century, al-Kindi 9th century, Al-Biruni in the early 11th century, al-Tarsusi in the late 12th century, and Fakhr-i-Mudabbir 13th century. Any of these contains far more information about Indian and damascene steels than appears in the entire surviving literature of classical Greece and Rome . There are many ethnographic accounts of Indian crucible steel production; however, scientific investigations of

5764-650: The Labour Party, and was noted for its leftist sympathies; during the 1980s, when Sheffield City Council was led by David Blunkett , the area gained the epithet the " Socialist Republic of South Yorkshire ". However, the Liberal Democrats controlled the Council between 1999 and 2001 and took control again from 2008 to 2011. The majority of council-owned facilities are operated by independent charitable trusts. Sheffield International Venues runs many of

5895-401: The Sheffield district of Hallam was the highest ranking area outside London for overall wealth, the proportion of people earning over £60,000 a year standing at almost 12%. A survey by Knight Frank revealed that Sheffield was the fastest-growing city outside London for office and residential space and rents during the second half of 2004. This can be seen in a surge of redevelopments, including

6026-486: The South Yorkshire authorities, as well as Bolsover District , Borough of Chesterfield , Derbyshire Dales , North East Derbyshire and Bassetlaw District . In 2014, the Sheffield City Region Combined authority was formed by the South Yorkshire local authorities with the other councils as non-constituent members and the partnership integrated with the authority structure. In September 2020,

6157-484: The United Kingdom: urban, parkland and woodland, agricultural and arable land, moors, meadows and freshwater-based habitats. There are six areas within the city that are designated as sites of special scientific interest . The present city boundaries were set in 1974 (with slight modification in 1994), when the former county borough of Sheffield merged with Stocksbridge Urban District and two parishes from

6288-649: The United States in the 1880s, iron and carbon were melted together directly to produce crucible steel. Throughout the 19th century and into the 1920s a large amount of crucible steel was directed into the production of cutting tools , where it was called tool steel . The crucible process continued to be used for specialty steels, but is today obsolete. Similar quality steels are now made with an electric arc furnace . Some uses of tool steel were displaced, first by high-speed steel and later by materials such as tungsten carbide . Another form of crucible steel

6419-677: The aforementioned government departments. Sheffield City Council , which is also a major public sector employer in the city, employs over 8,000 people, spread across four different sections (known as portfolios). Sheffield City Council is also the Local Education Authority (LEA) and as such manages all states schools and their associated staff. As part of its mandate to provide public services, Sheffield City Council maintains contracts with three private contractors – Amey , Veolia & Capita (contract ending in 2020). Together, these contractors provide additional employment in

6550-603: The area, and as Sheffield's steel industry plummeted in the mid-20th century and the steelworks were shut down, the brewery was free to expand and it soon took up most of the current area of the Riverside Exchange. In 1962, the Exchange Brewery was taken over by Whitbread & Co Ltd. However, as the importance of the area decreased due to the closure of the Sheffield Wicker goods station and

6681-403: The authority changed to its current name. The city returns five members of parliament to the House of Commons , with a sixth, the Member of Parliament for Penistone and Stocksbridge representing parts of Sheffield and Barnsley. The former Deputy Prime Minister Nick Clegg was an MP for Sheffield, representing Sheffield Hallam from 2005 until he was unseated 2017 , when the seat returned

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6812-400: The booming cutlery industry in the area and remains to this day, was established and focused on markets outside the Sheffield area, leading to the gradual establishment of Sheffield as a respected producer of cutlery. this gradually developed from a national reputation into an international one. Playing a crucial role in the Industrial Revolution , the city became an industrial powerhouse in

6943-412: The carbon to dissolve evenly into the liquid steel and negating the prior need for extensive blacksmithing in an attempt to achieve the same result. Similarly, it allowed steel to be cast by pouring into molds. The use of fluxes allowed nearly complete extraction of impurities from the liquid, which could then simply float to the top for removal. This produced the first steel of modern quality, providing

7074-428: The carbon, a variety of organic materials are specified by the contemporary Islamic authorities, including pomegranate rinds, acorns, fruit skins like orange peel, leaves as well as the white of egg and shells. Slivers of wood are mentioned in some of the Indian sources, but significantly none of the sources mention charcoal. Crucible steel is generally attributed to production centres in India and Sri Lanka where it

7205-560: The cast iron. The third method uses wrought iron and cast iron. In this process, wrought iron and cast iron may be heated together in a crucible to produce steel by fusion. In regard to this method Abu Rayhan Biruni states: "this was the method used in Hearth". It is proposed that the Indian method refers to Wootz carburization method; i.e., the Mysore or Tamil processes. Variations of co-fusion process have been found primarily in Persia and Central Asia but have also been found in Hyderabad, India called Deccani or Hyderabad process. For

7336-531: The city and many others in the UK), the number of jobs in the city increased by 22% and 50% of these were in the public sector. Major public sector employers include the National Health Service , The University of Sheffield, Sheffield Hallam University , and numerous government departments and agencies including the Home Office (Visas & Immigration), Department for Education & Department for Business, Innovation & Skills . Recently developed offices in St Paul's Place and Riverside Exchange play host to

7467-415: The city are shared with Derbyshire ; in the first half of the 20th century Sheffield extended its borders south into Derbyshire, annexing a number of villages, including Totley , Dore and the area now known as Mosborough Townships. Sheffield is a geographically diverse city. It nestles in the eastern foothills of the Pennines , between the main upland range and Peak District National Park to

7598-409: The city as the cutlery and steel industries flourished. The population continued to grow until the mid-20th century, at which point, due to industrial decline, the population began to contract. However, by the early 21st century, the population had begun to grow once again. The population of Sheffield peaked in 1951 at 577,050, and has since declined steadily. However, the mid-2007 population estimate

7729-409: The city centre were also cleared to make way for a new system of roads. In February 1962, the city was devastated by the Great Sheffield Gale ; winds of up to 97 mph (156 km/h) killed four people and damaged 150,000 houses, more than two-thirds of the city's housing stock at the time. Increased automation and competition from abroad resulted in the closure of many steel mills . The 1980s saw

7860-407: The city council and residents over the fate of the city's 36,000 highway trees. Around 4,000 highway trees have since been felled as part of the 'Streets Ahead' Private Finance Initiative (PFI) contract signed in 2012 by the city council, Amey plc and the Department for Transport to maintain the city streets. The tree fellings have resulted in many arrests of residents and other protesters across

7991-495: The city even though most felled trees in the city have been replanted, including those historically felled and not previously replanted. The protests eventually stopped in 2018 after the council paused the tree felling programme as part of a new approach developed by the council for the maintenance of street trees in the city. In May 2022, Sheffield was named a " Tree City of the World " in recognition of its work to sustainably manage and maintain urban forests and trees. This honour

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8122-649: The city was built on Seven Hills. As this claim is disputed, it likely originated as a joke referencing the Seven Hills of Rome . Estimated to contain around 4.5 million trees, Sheffield has more trees per person than any other city in Europe and is considered to be one of the greenest cities in England and the UK, which was further reinforced when it won the 2005 Entente Florale competition. With more than 250 parks, woodlands and gardens, it has over 170 woodlands (covering 10.91 sq mi or 28.3 km ), 78 public parks (covering 7.07 sq mi or 18.3 km ) and 10 public gardens. Added to

8253-412: The city's sporting and leisure facilities, including Sheffield Arena and the English Institute of Sport, Sheffield . Museums Sheffield and the Sheffield Industrial Museums Trust take care of galleries and museums owned by the council. The city of Sheffield is part of the wider South Yorkshire Mayoral Combined Authority , headed by mayor Oliver Coppard since 2022. The combined authority covers

8384-433: The city, had a population of 566,242 at the mid-2019 estimate, making it the 7th most populous district in England. It is one of eleven British cities that make up the Core Cities Group . In 2011, the unparished area had a population of 490,070. The city has a long sporting heritage and is home both to the world's oldest football club, Sheffield F.C. , and the world's oldest football ground, Sandygate . Matches between

8515-410: The city. Sheffield is a major retail centre, and is home to many High Street and department stores as well as designer boutiques. The main shopping areas in the city centre are on The Moor precinct, Fargate , Orchard Square and the Devonshire Quarter . Department stores in the city centre include Marks and Spencer and Atkinsons . Sheffield's main market was once Castle Market , built above

8646-412: The city; instead it is divided into 28 electoral wards , with each ward generally covering 4–6 areas. These electoral wards are grouped into six parliamentary constituencies . Sheffield is largely unparished , but Bradfield and Ecclesfield have parish councils, and Stocksbridge has a town council. The United Kingdom Census 2001 reported a resident population for Sheffield of 513,234,

8777-426: The crucible pots and annealing furnaces to prepare each pot before firing. Ancillary rooms for weighing each charge and for the manufacture of the clay crucibles were either attached to the workshop, or located within the cellar complex. The steel, originally intended for making clock springs, was later used in other applications such as scissors, axes and swords. Sheffield's Abbeydale Industrial Hamlet operates for

8908-464: The crucible steel process was of the carburization of iron metal. This process appears to be typical of and restricted to the Ferghana Valley in eastern Uzbekistan, and it is therefore called the Ferghana Process. This process lasted in that region for roughly four centuries.. Evidence of the production of crucible steel have been found in Merv, Turkmenistan, a major city on the 'Silk Road'. The Islamic scholar al-Kindi (801–866 CE) mentions that during

9039-404: The crucible to remove or promote sulfur , silicon , and other impurities, further altering its material qualities. Various methods were used to produce crucible steel. According to Islamic texts such as al-Tarsusi and Abu Rayhan Biruni , three methods are described for indirect production of steel. The medieval Islamic historian Abu Rayhan Biruni (c. 973–1050) provides the earliest reference of

9170-525: The decline in high street shopping around the UK, efforts have been made to rejuvenate Sheffield City Centre and improve the retail and leisure offering. Major developments include Leopold Square , The Moor , St Paul's Place (a mixed use development) and the Heart of the City I & II projects. In March 2022 Sheffield City Council announced that a new leisure hub would be constructed at the southern end of Fargate. The £300,000 hub will feature cafes, shops and large screen TVs for sports events. The development

9301-503: The departure of the Romans, the Sheffield area may have been the southern part of the Brittonic kingdom of Elmet , with the rivers Sheaf and Don forming part of the boundary between this kingdom and the kingdom of Mercia . Gradually, Anglian settlers pushed west from the kingdom of Deira . A Britonnic presence within the Sheffield area is evidenced by two settlements called Wales and Waleswood close to Sheffield. The settlements that grew and merged to form Sheffield, however, date from

9432-424: The designation. A subsidiary aim of the green belt is to encourage recreation and leisure interests, with many rural landscape features and facilities included. Sheffield is made up of many suburbs and neighbourhoods, many of which developed from villages or hamlets that were absorbed into Sheffield as the city grew. These historical areas are largely ignored by the modern administrative and political divisions of

9563-536: The driest with 51.0 mm (2.01 in). July was also the hottest month, with an average maximum temperature of 20.8 °C (69.4 °F). The highest temperature ever recorded in the city of Sheffield was 39.4 °C (102.9 °F), on 19 July 2022. The average minimum temperature in January and February was 1.6 °C (34.9 °F), though the lowest temperatures recorded in these months can be between −10 and −15 °C (14 and 5 °F), although since 1960,

9694-497: The early 1600s it had become the main centre of cutlery manufacture in England outside London, overseen by the Company of Cutlers in Hallamshire . From 1570 to 1584, Mary, Queen of Scots , was imprisoned in Sheffield Castle and Sheffield Manor . During the 1740s, a form of the crucible steel process was discovered that allowed the manufacture of a better quality of steel than had previously been possible. In about

9825-407: The early 18th century. Stainless steel was invented by Harry Brearley in 1912, bringing affordable cutlery to the masses. The work of F. B. Pickering and T. Gladman throughout the 1960s, 1970s and 1980s was fundamental to the development of modern high-strength low-alloy steels. Further innovations continue, with new advanced manufacturing technologies and techniques being developed on

9956-403: The first to use the word "wootz" in print. Another investigator, David Mushet , was able to infer that wootz was made by fusion. David Mushet patented his process in 1800. He made his report in 1805. As it happens, however, the first successful European process had been developed by Benjamin Huntsman some 50 years previously in the 1740s. Benjamin Huntsman was a clockmaker in search of

10087-596: The former 1974–1986 South Yorkshire County Council area which functions either went to local or regional authorities. In 2004, as part of the Moving Forward: The Northern Way document, city regions were created in a collaboration with the three northern regional development agencies . These became independent Local enterprise partnerships in 2011. The area's partnership retains the Sheffield City Region name, covering

10218-418: The full diffusion of carbon throughout the liquid. With the use of fluxes it also allowed the removal of most impurities, producing the first steel of modern quality. Due to carbon's high melting point (nearly triple that of steel) and its tendency to oxidize (burn) at high temperatures, it cannot usually be added directly to molten steel. However, by adding wrought iron or pig iron, allowing it to dissolve into

10349-518: The greatest impact are housing (34%), transport (25%), consumer (11%), private services (9%), public services (8%), food (8%) and capital investment (5%). Sheffield City Council has signed up to the 10:10 campaign. Sheffield is within a green belt region that extends into the wider surrounding counties, and is in place to reduce urban sprawl , prevent the towns and areas in the Sheffield built-up area conurbation from further convergence, protect

10480-418: The identity of outlying communities, encourage brownfield reuse, and preserve nearby countryside. This is achieved by restricting inappropriate development within the designated areas, and imposing stricter conditions on permitted building. The main urban area and larger villages of the borough are exempt from the green belt area, but surrounding smaller villages, hamlets and rural areas are 'washed over' with

10611-500: The largest single ingot (570 tonnes) in Europe and is currently in the process of expanding its capabilities. In July 2021 Forgemasters was bought outright by the UK Ministry of Defence for £2.56 million, with the intention of investing a further £400 million over the next decade. The decision was based on the important role Forgemasters plays in the construction of the UK nuclear submarine fleet as well other vessels for

10742-595: The late medieval period, 16th century. One of the earliest known potential sites, which shows some promising preliminary evidence that may be linked to ferrous crucible processes in Kodumanal , near Coimbatore in Tamil Nadu . The site is dated between the third century BCE and the third century CE. By the seventeenth century the main centre of crucible steel production seems to have been in Hyderabad. The process

10873-403: The liquid, the carbon content could be carefully regulated (in a way similar to Asian crucible-steels but without the stark inhomogeneities indicative of those steels). Another benefit was that it allowed other elements to be alloyed with the steel. Huntsman was one of the first to begin experimenting with the addition of alloying agents like manganese to help remove impurities such as oxygen from

11004-482: The loss of tram connections to the area, the brewery shut down in 1993. In the late 1990s, plans were made by Sheffield's city council to redevelop the Exchange Brewery's area. The area now has more than 300 new apartments, built between 2003 and 2005, and some large office blocks. The area has been made pedestrian-friendly by the construction of the Upper Don Trail , a walkway parallel to Bridge Street along

11135-565: The main supplier of crucible steel, but over the centuries production slipped back, and by the nineteenth century just a small industry survived in the Balangoda district of the central southern highlands. A series of excavations at Samanalawewa indicated the unexpected and previously unknown technology of west-facing smelting sites, which are different types of steel production. These furnaces were used for direct smelting to steel. These are named "west facing" because they were located on

11266-477: The middle of the 1st millennium BCE in Southern India and Sri Lanka using the wootz process. In ancient times, it was not possible to produce very high temperatures with charcoal or coal fires, which were required to melt iron or steel. However, pig iron, having a higher carbon content and thus a lower melting point, could be melted, and by soaking wrought iron or steel in the liquid pig-iron for

11397-411: The more the steel was heated and worked, the more it tended to decarburize , and this outward diffusion occurs much faster than the inward diffusion between layers. Thus, further attempts to homogenize the steel resulted in a carbon content too low for use in items like springs, cutlery, swords, or tools. Therefore, steel intended for use in such items, especially tools, was still being made primarily by

11528-519: The nature and properties of wootz steel. Indian wootz engaged the attention of some of the best-known scientists. One was Michael Faraday who was fascinated by wootz steel. It was probably the investigations of George Pearson, reported at the Royal Society in 1795, which had the most far-reaching impact in terms of kindling interest in wootz amongst European scientists. He was the first of these scientists to publish his results and, incidentally,

11659-667: The neighbourhood's desirability. Another development, the West Bar scheme is to be based in the quarter. This is planned to extend the city centre's retail offering, and will also contribute new apartments and office space, and is based around the Sheffield Law Courts . Sheffield Sheffield is a city in South Yorkshire , England, situated 29 miles (47 km) south of Leeds and 32 miles (51 km) east of Manchester . Its name derives from

11790-528: The ninth century CE the region of Khorasan, the area to which the cities Nishapur , Merv, Herat and Balkh belong, was a steel manufacturing centre. Evidence from a metallurgical workshop at Merv, dated to the ninth- early tenth century CE, provides an illustration of the co-fusion method of steel production in crucibles, about 1000 years earlier than the distinctly different wootz process. The crucible steel process at Merv might be seen as technologically related to what Bronson (1986, 43) calls Hyderabad process,

11921-500: The outskirts of the town. The collapse of the dam wall of one of these reservoirs in 1864 resulted in the Great Sheffield Flood , which killed 270 people and devastated large parts of the town. The growing population led to the construction of many back-to-back dwellings that, along with severe pollution from the factories, inspired George Orwell in 1937 to write: "Sheffield, I suppose, could justly claim to be called

12052-474: The population are Christian, 6% are Muslim, 0.6% are Hindu, 0.4% are Buddhist, 0.2% are Sikh, 0.1% are Jewish, 0.4% belong to another religion, 31% have no religion and 7% did not state their religion. The largest quinary group is 20- to 24-year-olds (9%) because of the large university student population. The Industrial Revolution served as a catalyst for considerable population growth and demographic change in Sheffield. Large numbers of people were driven to

12183-424: The process at several places in southern India. From the mid-17th century onwards, European travellers to the Indian subcontinent wrote numerous vivid eyewitness accounts of the production of steel there. These include accounts by Jean-Baptiste Tavernier in 1679, Francis Buchanan in 1807, and H.W. Voysey in 1832. The 18th, 19th and early 20th century saw a heady period of European interest in trying to understand

12314-458: The production of Damascus steel . The first, and the most common, traditional method is solid state carburization of wrought iron . This is a diffusion process in which wrought iron is packed in crucibles or a hearth with charcoal, then heated to promote diffusion of carbon into the iron to produce steel. Carburization is the basis for the wootz process of steel. The second method is the decarburization of cast iron by removing carbon from

12445-466: The public a scythe -making works, which dates from Huntsman's times and is powered by a water wheel , using crucible steel made at the site. Previous to Huntsman, the most common method of producing steel was the manufacture of shear steel . In this method, blister steel produced by cementation was used, which consisted of a core of wrought iron surrounded by a shell of very high-carbon steel, typically ranging from 1.5 to 2.0% carbon. To help homogenize

12576-450: The quality and high hardenability of the steel, it was quickly adopted for the manufacture of tool steel, machine tools, cutlery, and many other items. Because no oxygen was blown through the steel, it exceeded Bessemer steel in both quality and hardenability, so Huntsman's process was used for manufacturing tool steel until better methods, utilizing an electric arc , were developed in the early 20th century. In another method, developed in

12707-406: The reasoning behind it: Ancient people use chi kang , (combined steel), for the edge, and jou thieh (soft iron) for the back, otherwise it would often break. Too strong a weapon will cut and destroy its own edge; that is why it is advisable to use nothing but combined steel. As for the yu-chhang (fish intestines) effect, it is what is now called the 'snake-coiling' steel sword, or alternatively,

12838-617: The remains of crucible steel production have only been published for four regions: three in India and one in Sri Lanka. Indian/Sri Lankan crucible steel is commonly referred to as wootz , which is generally agreed to be an English corruption of the word ukko (in the Canarese language) or hookoo (in the Telugu language ). European accounts from the 17th century onwards have referred to

12969-402: The remains of the castle. This has since been demolished. Sheffield Moor Market opened in 2013 and became the main destination for fresh produce. The market has 196 stalls and includes local and organic produce, as well as international fusion cuisine such as Russian, Jamaican and Thai. In March 2021 it was announced that the Sheffield branch of John Lewis would close due to falling sales and

13100-421: The repute and manufacture of "wootz", a traditional crucible steel made specially in parts of southern India in the former provinces of Golconda , Mysore and Salem. As yet the scale of excavations and surface surveys is too limited to link the literary accounts to archaeometallurgical evidence. The proven sites of crucible steel production in south India, e.g. at Konasamudram and Gatihosahalli, date from at least

13231-464: The river Don, and a pedestrian bridge linking the new developments to Nursery Street on the other side of the river. The development of the Riverside Exchange neighbourhood continues, with planned new developments such as more office space, shops and cafés. There are also schemes for Nursery Street to be pedestrianised. The final northern section of Sheffield's Inner Relief Road, finished in 2008, shifts traffic away from Bridge Street and further increases

13362-473: The same period, a technique was developed for fusing a thin sheet of silver onto a copper ingot to produce silver plating, which became widely known as Sheffield plate . These innovations spurred Sheffield's growth as an industrial town, but the loss of some important export markets led to a recession in the late 18th and early 19th century. The resulting poor conditions culminated in a cholera epidemic that killed 402 people in 1832. The population of

13493-479: The same time that the west- facing technology was operating in Sri Lanka. Excavations of the Yodhawewa (near Mannar) site (in 2018) have uncovered a lower half of a bottom spherical furnace and crucible fragments used to make crucible steel in Sri Lanka during the 7th-8th centuries AD. The crucible fragments uncovered at the site were similar to the elongated tube-shaped crucibles of Samanalawewa. Central Asia has

13624-424: The second half of the first millennium, and are of Anglo-Saxon and Danish origin. In Anglo-Saxon times, the Sheffield area straddled the border between the kingdoms of Mercia and Northumbria . The Anglo-Saxon Chronicle reports that Eanred of Northumbria submitted to Egbert of Wessex at the hamlet of Dore (now a suburb of Sheffield) in 829, a key event in the unification of the kingdom of England under

13755-404: The slow and arduous bloomery process in very small amounts and at high cost, which, albeit better, had to be manually separated from the wrought iron and was still impossible to fully homogenize in the solid state. Huntsman's process was the first to produce a fully homogeneous steel. Unlike previous methods of steel production, the Huntsman process was the first to fully melt the steel, allowing

13886-417: The steel, it was pounded into flat plates, which were stacked and forge welded together. This produced steel with alternating layers of steel and iron. The resulting billet could then be hammered flat, cut into plates, which were stacked and welded again, thinning and compounding the layers, and evening out the carbon more as it slowly diffused out of the high-carbon steel into the lower-carbon iron. However,

14017-442: The steel. His process was later used by many others, such as Robert Hadfield and Robert Forester Mushet , to produce the first alloy steels like mangalloy , high-speed steel , and stainless steel . Due to variations in the carbon content of the blister steel, the carbon steel produced could vary in carbon content between crucibles by as much as 0.18%, but on average produced a eutectoid steel containing ~ 0.79% carbon. Due to

14148-402: The street-trees dispute, and we wish to reiterate our previous apologies for our failings". Sheffield is governed at the local level by Sheffield City Council and is led by Councillor Tom Hunt (Assumed office 16 May 2023). It consists of 84 councillors elected to represent 28  wards : three councillors per ward. Following the 2024 local elections , the distribution of council seats

14279-546: The temperature at −8.7 °C (16.3 °F), recorded on 20 December, and states that to be the lowest December temperature since 1981.) The coldest temperature ever recorded in the city of Sheffield at Weston Park , since records began in 1882, is −14.6 °C (5.7 °F), registered in February 1895. The lowest daytime maximum temperature in the city since records began is −5.6 °C (21.9 °F), also recorded in February 1895. More recently, −4.4 °C (24.1 °F)

14410-504: The temperature has never fallen below −9.2 °C (15.4 °F), suggesting that urbanisation around the Weston Park site during the second half of the 20th century may prevent temperatures below −10 °C (14 °F) occurring. The coldest temperature to be recorded was −8.2 °C (17.2 °F) in 2010. (Note: The official Weston Park Weather Station statistics, which can also be viewed at Sheffield Central Library , has

14541-454: The time. Before the introduction of Huntsman's technique, Sheffield produced about 200 tonnes of steel per year from Swedish wrought iron (see Oregrounds iron ). The introduction of Huntsman's technique changed this radically: one hundred years later the amount had risen to over 80,000 tonnes per year, or almost half of Europe's total production. Sheffield developed from a small township into one of Europe's leading industrial cities. The steel

14672-467: The top ten "best cities to locate a business today", the city occupying third and fourth places respectively for best office location and best new call centre location. The same report places Sheffield in third place regarding "greenest reputation" and second in terms of the availability of financial incentives. Sheffield has an international reputation for metallurgy and steel-making. The earliest official record of cutlery production, for which Sheffield

14803-425: The town grew rapidly throughout the 19th century; increasing from 60,095 in 1801 to 451,195 by 1901. The Sheffield and Rotherham railway was constructed in 1838, connecting the two towns. The town was incorporated as a borough in 1842, and was granted city status by letters patent in 1893. The influx of people also led to demand for better water supplies, and a number of new reservoirs were constructed on

14934-663: The two professional clubs, Sheffield United and Sheffield Wednesday , are known as the Steel City derby . The city is also home to the World Snooker Championship and the Sheffield Steelers , the UK's first professional ice hockey team. The name Sheffield , has its origins in Old English and derives from the name of a principal river in the city, the River Sheaf . This name, in turn,

15065-541: The ugliest town in the Old World ". The Great Depression hit the city in the 1930s, but as international tensions increased and the Second World War became imminent; Sheffield's steel factories were set to work manufacturing weapons and ammunition for the war effort. As a result, the city became a target for bombing raids, the heaviest of which occurred on the nights of 12 and 15 December 1940, now known as

15196-405: The use of fluxes. The steel was usually worked very little and at relatively low temperatures to avoid any decarburization , hot short crumbling, or excess diffusion of carbon. With a carbon content close to that of cast iron, it usually required no heat treatment after shaping other than air cooling to achieve the correct hardness, relying on composition alone. The higher-carbon steel provided

15327-457: The west, and the lower-lying South Yorkshire Coalfield to the east. It lies at the confluence of five rivers: Don , Sheaf , Rivelin , Loxley and Porter . As such, much of the city is built on hillsides with views into the city centre or out to the countryside. Blake Street, in the S6 postcode area, is the third steepest residential street in England, with a gradient of 16.6°. The highest point in

15458-403: The western sides of hilltops to use the prevailing wind in the smelting process. Sri Lankan furnace steels were known and traded between the 9th and 11th centuries and earlier, but apparently not later. These sites were dated to the 7th–11th centuries. The coincidence of this dating with the 9th century Islamic reference to Sarandib is of great importance. The crucible process existed in India at

15589-417: The wootz processes in that it used a longer time to melt the steel and to cool it down and thus allowed more time for the diffusion of carbon. Huntsman's process used iron and steel as raw materials, in the form of blister steel , rather than direct conversion from cast iron as in puddling or the later Bessemer process . The ability to fully melt the steel removed any inhomogeneities in the steel, allowing

15720-511: The worst of this run-down of Sheffield's industries, along with those of many other areas of the UK. The building of the Meadowhall Centre on the site of a former steelworks in 1990 was a mixed blessing, creating much-needed jobs but hastening the decline of the city centre. Attempts to regenerate the city were kick-started when the city hosted the 1991 World Student Games , which saw the construction of new sporting facilities such as

15851-470: The wrought iron). This often resulted in an intricate pattern when the steel was forged, filed or polished, with possibly the most well-known examples coming from the wootz steel used in Damascus swords . The steel was often much higher in carbon content (typically ranging in the area of 1.5 to 2.0%) and in quality (lacking impurities) in comparison with other methods of steel production of the time because of

15982-453: Was 530,300, representing an increase of about 17,000 residents since 2001. Although a city, Sheffield is informally known as "the largest village in England ", because of a combination of topographical isolation and demographic stability. It is relatively geographically isolated, being cut off from other places by a ring of hills. Local folklore insists that, like Rome, Sheffield was built "on seven hills". The land surrounding Sheffield

16113-755: Was apparently quite different from that recorded elsewhere. Wootz from Hyderabad or the Deccani process for making watered blades involved a co-fusion of two different kinds of iron: one was low in carbon and the other was a high-carbon steel or cast iron. Wootz steel was widely exported and traded throughout ancient Europe, China, the Arab world , and became particularly famous in the Middle East, where it became known as Damascus steel. Recent archaeological investigations have suggested that Sri Lanka also supported innovative technologies for iron and steel production in antiquity. The Sri Lankan system of crucible steel making

16244-483: Was formerly located on the site of the current developments, and incorporates the Victoria Quays . In the 1760s, one of the earliest integrated steelworks in the world was set up on the site of what is now the Riverside Exchange. A brewery was founded in the area by Tennant Brothers in 1852, and by then there were already four different steelworks there. The brewery grew, however, and took up more and more of

16375-404: Was given before the release of the independent inquiry's report on the so-called "Sheffield Chainsaw Massacre". The report concluded that "thousands of healthy and loved trees were lost. Many more could have been" and was critical of Sheffield City Council. The latter issued this statement on receipt of the report: "the council has already acknowledged that it got many things wrong in the handling of

16506-528: Was partially independent of the various Indian and Middle Eastern systems. Their method was something similar to the method of carburization of wrought iron. The earliest confirmed crucible steel site is located in the Knuckles range in the northern area of the Central Highlands of Sri Lanka dated to 6th–10th centuries CE. In the twelfth century the land of Serendib (Sri Lanka) seems to have been

16637-470: Was particularly hard hit during the 2007 United Kingdom floods and the 2010 'Big Freeze' . Many landmark buildings such as Meadowhall and the Hillsborough Stadium flooded due to being close to rivers that flow through the city. In 2010, 5,000 properties in Sheffield were identified as still being at risk of flooding. In 2012 the city narrowly escaped another flood, despite extensive work by

16768-492: Was produced in specialised workshops called 'crucible furnaces', which consisted of a workshop at ground level and a subterranean cellar. The furnace buildings varied in size and architectural style, growing in size towards the latter part of the 19th century as technological developments enabled multiple pots to be "fired" at once, using gas as a heating fuel. Each workshop had a series of standard features, such as rows of melting holes, teaming pits, roof vents, rows of shelving for

16899-539: Was produced using the so-called " wootz " process, and it is assumed that its appearance in other locations was due to long-distance trade. Only recently it has become apparent that places in Central Asia like Merv in Turkmenistan and Akhsiket in Uzbekistan were important centres of production of crucible steel. The Central Asian finds are all from excavations and date from the 8th to 12th centuries CE, while

17030-548: Was recorded as a daytime maximum at Weston Park, on 20 December 2010 (from the Weston Park Weather Station statistics, which also can be viewed at Sheffield Central Library.) On average, through the winter months of December to March, there are 67 days during which ground frost occurs. The Weston Park Weather station, established in 1882, is one of the longest running weather stations in the United Kingdom. It has recorded weather for more than 125 years, and

17161-400: Was unsuitable for industrial use, and now includes several protected green belt areas. These topographical factors have served to restrict urban spread, resulting in a relatively stable population size and a low degree of mobility. After many years of decline, the Sheffield economy is going through a strong revival. The 2004 Barclays Bank Financial Planning study revealed that, in 2003,

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