Robert Hadfield

Sheffield metallurgist. Inventor of manganese and silicon steel. He was made Master Cutler, knighted, and created a baronet of Sheffield.

Robert Hadfield is commemorated in the Sir Robert Hadfield Building at the University of Sheffield.

Sheffield Cultural Heritage


Around the time of Henry Bessemer's death, Sir Robert Hadfield, a Sheffield- born (1858) metallurgist from a steel manufacturing business family, discovered manganese steel - one of the first steel alloys - and silicon steel, the magnetic abilities of which have proven fruitful in engineering in the years since his death in 1940. He published over 200 papers on metallurgical research.

Sheffield Cultural Heritage

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