1944

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Started the production of Arms Bronze® (copper alloy)

1961

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Started the full-scale production of nickel alloy and BISHILITE :Mitsubishi Materials Hard-Facing Alloys (Cobalt alloy)

1965

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Started the production of precision castings and precision die-forgings

1973

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Started the production of Zircaloy nuclear fuel cladding tubing

1982

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Started the production of Titanium Alloys for aircraft applications

1990

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Mitsubishi Metal Corporation and Mitsubishi Mining & Cement Corporation merged to form Mitsubish Materials Corporation

1991

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Started the production of evaporating materials for DV tape

1993

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Registered ISO9002 (Welding cast Rods and Electrodes, sheets, strips and plates)

1997

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Registered ISO14001 (Environmental Management system)

1998

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Started the operation of PT.MMC METAL FABRICATION Started the operation of SONA OKEGAWA PRECISION FORGING

2002

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The R&D section in Central Research Institute related to Okegawa plant, became an independent division as Non-ferrous Alloys Research & Technology Laboratory

2004

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Registered QS9100 & Nadcap

2009

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Transferred Zircaloy nuclear fuel cladding tubing business to Mitsubishi Nuclear Fuel Corporation

2010

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Discontinue prodution of precision castings MMC Superalloy Corporation established