Robert Hadfield

Sir Robert Hadfield, Bt
Sir Robert Hadfield, Bt
	Bust in the Sir Robert Hadfield Building, University of Sheffield
Born	Robert Abbott Hadfield; 28 November 1858; Sheffield
Died	30 September 1940 (aged 81); Surrey
Nationality	British
Occupation	Engineer
	Engineering career
Projects	Manganese steel; Silicon steel;
Awards	Bessemer Gold Medal (1904); Elliott Cresson Medal (1910); John Fritz Medal (1921); Albert Medal (1935); Fellow of the Royal Society;

Sir Robert Abbott Hadfield, 1st Baronet FRS^[1] (28 November 1858 in Sheffield – 30 September 1940 in Surrey) was an English metallurgist, noted for his 1882 discovery of manganese steel, one of the first steel alloys. He also invented silicon steel, initially for mechanical properties (patents in 1886) which have made the alloy a material of choice for springs and some fine blades, though it has also become important in electrical applications for its magnetic behaviour.^[2]

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Sir Robert Hadfield, Bt
Bust in the Sir Robert Hadfield Building, University of Sheffield
Born	Robert Abbott Hadfield (1858-11-28)28 November 1858 Sheffield
Died	30 September 1940(1940-09-30) (aged 81) Surrey
Nationality	British
Occupation	Engineer
Engineering career
Projects	Manganese steel Silicon steel
Awards	Bessemer Gold Medal (1904) Elliott Cresson Medal (1910) John Fritz Medal (1921) Albert Medal (1935) Fellow of the Royal Society^[1]