Graphite Electrode
2022
Copper ore from the Bell Mine
before 1889
Arsenical cobalt or skutterudite, from Skutterude, near Modum, Norway
before 1889
Cupellation furnace
1696-1700
Wrought iron lock (mid 18th century)
Sample of Bessemer Steel
1860
Cupriferous sandstone from Schweinkopf
before 1889
three gold-plated cable dies
1979
Soldier's helmet made in manganese steel, 1882-1884
1882-1884
Stainless steel weed fork
Drillbit, square at one end from Osborn-Mushet Tools Ltd.
1972
Reamer, tapered, threaded at one end
1972
Drillbit, treaded at one end from Osborn-Mushet Tools Ltd.
1972
Tube from Osborn-Mushet Tools Ltd.
1972
wooden rectangle from Osborn-Mushet Tools Ltd.
1972
Solidend from Osborn-Mushet Tools Ltd.
1972
Drillbit, double ended from Osborn-Mushet Tools Ltd.
1972
Drillbit, square at one end from Osborn-Mushet Tools Ltd.
1972
wooden shape from Osborn-Mushet Tools Ltd.
1972
Drillbit, square at one end from Osborn-Mushet Tools Ltd.
1972
Solidend from Osborn-Mushet Tools Ltd.
1972
Drillbit, treaded at one end from Osborn-Mushet Tools Ltd.
1972
Assay balance
1845-1871
"Gladstone" medallion, manganese steel, 1882-1884
1882-1884
Specimen of steel produced by the Basic or Thomas-Gilchrist process
1887
Model of English lead cupellation furnace
Touchstone and gold alloy needles
Tensile testbar
1882-1884
Magnetic and non-magnetic manganese steel bar
1882-1884
Specimen of steel produced by the Basic or Thomas Gilchrist process
1887
Small permanent magnet
Iron "toadstool" head nail
Bar of forged steel. Mid 19th century
1830-1860
Annealing tray, from assaying apparatus
Turning tool of silicon steel, 1884-1886
1884-1886
Flattening mill, used by assayers, 1894
Exhaust gas driven turbo-charger model T3
1988
Prototype titanium alloy handle for throwing hammer brittle fracture on one section
1958
Sheet of commercially pure titanium, with argon arc weld
1958
Tensile testbar
1882-1884
Cast iron hydraulic body with nickel plated finish
1980
Blacksmith’s cart jack from Portslade forge, Sussex, Britain, 1890-1930
1890-1930
Cold drawn bar sectioned to reveal internal defect
Manganese steel ingot fracture
1882-1884
Manganese steel ingot fracture
1882-1884
Manganese steel ingot fracture
1882-1884
Lump of aluminium/silicon alloy and two castings (bicycle pedal) of same alloy
1982
Manganese steel ingot fracture
1882-1884
Fracture from small ingot showing columnar growth
