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Robert Hadfield
 
 
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Sir Robert Abbott Hadfield (born November 28, 1858, Sheffield
Sheffield

Sheffield is a city status in the United Kingdom and metropolitan borough in South Yorkshire, England. It is so named because of its origins in a field on the River Sheaf that runs through the city....
; died September 30, 1940, Surrey
Surrey

Surrey is a counties of England in the South East England of England and is one of the Home Counties. The county borders Greater London, Kent, East Sussex, West Sussex, Hampshire, and Berkshire....
) was an English metallurgist
Metallurgy

Metallurgy is a domain of materials science that studies the physical and chemical behavior of metallic Chemical element, their intermetallics, and their mixtures, which are called alloys....
, noted for his 1882 discovery of manganese
Manganese

Manganese is a chemical element, designated by the symbol Mn. It has the atomic number 25. It is found as a Oxidation state in nature , and in many minerals....
 steel
Steel

Steel is an alloy consisting mostly of iron, with a carbon content between 0.2% and 2.14% by weight , depending on grade. Carbon is the most cost-effective alloying material for iron, but various other alloying elements are used such as manganese, chromium, vanadium, and tungsten....
, one of the first steel alloy
Alloy

An alloy is a partial or complete solid solution of one or more chemical element in a metallic matrix. Complete solid solution alloys give single solid phase microstructure, while partial solutions give two or more phases that may be homogeneous in distribution depending on thermal history....
s. He also invented silicon steel
Electrical steel

Electrical steel, also called lamination steel, silicon electrical steel, silicon steel or transformer steel, is specialty steel tailored to produce certain magnetic properties, such as a small hysteresis area and high permeability ....
 which is important in electrical applications.

Hadfield's father, also named Robert Hadfield, owned Hadfield's Steel Foundry in Sheffield
Sheffield

Sheffield is a city status in the United Kingdom and metropolitan borough in South Yorkshire, England. It is so named because of its origins in a field on the River Sheaf that runs through the city....
 and was one of the first manufacturers of steel casting
Casting

In metalworking, casting involves pouring a liquid metal into a Mold_, which contains a hollow cavity of the desired shape, and then is allowed to solidify....
s. The younger Hadfield took over the business in 1888 and built the firm into one of the largest foundries
Foundry

A foundry is a factory which produces metal castings from either ferrous or non-ferrous metals alloys. Metals are turned into parts by melting the metal into a liquid, pouring the metal in a mold, and then removing the mold material or casting....
 in the world.






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Sir Robert Abbott Hadfield (born November 28, 1858, Sheffield
Sheffield

Sheffield is a city status in the United Kingdom and metropolitan borough in South Yorkshire, England. It is so named because of its origins in a field on the River Sheaf that runs through the city....
; died September 30, 1940, Surrey
Surrey

Surrey is a counties of England in the South East England of England and is one of the Home Counties. The county borders Greater London, Kent, East Sussex, West Sussex, Hampshire, and Berkshire....
) was an English metallurgist
Metallurgy

Metallurgy is a domain of materials science that studies the physical and chemical behavior of metallic Chemical element, their intermetallics, and their mixtures, which are called alloys....
, noted for his 1882 discovery of manganese
Manganese

Manganese is a chemical element, designated by the symbol Mn. It has the atomic number 25. It is found as a Oxidation state in nature , and in many minerals....
 steel
Steel

Steel is an alloy consisting mostly of iron, with a carbon content between 0.2% and 2.14% by weight , depending on grade. Carbon is the most cost-effective alloying material for iron, but various other alloying elements are used such as manganese, chromium, vanadium, and tungsten....
, one of the first steel alloy
Alloy

An alloy is a partial or complete solid solution of one or more chemical element in a metallic matrix. Complete solid solution alloys give single solid phase microstructure, while partial solutions give two or more phases that may be homogeneous in distribution depending on thermal history....
s. He also invented silicon steel
Electrical steel

Electrical steel, also called lamination steel, silicon electrical steel, silicon steel or transformer steel, is specialty steel tailored to produce certain magnetic properties, such as a small hysteresis area and high permeability ....
 which is important in electrical applications.

Hadfield's father, also named Robert Hadfield, owned Hadfield's Steel Foundry in Sheffield
Sheffield

Sheffield is a city status in the United Kingdom and metropolitan borough in South Yorkshire, England. It is so named because of its origins in a field on the River Sheaf that runs through the city....
 and was one of the first manufacturers of steel casting
Casting

In metalworking, casting involves pouring a liquid metal into a Mold_, which contains a hollow cavity of the desired shape, and then is allowed to solidify....
s. The younger Hadfield took over the business in 1888 and built the firm into one of the largest foundries
Foundry

A foundry is a factory which produces metal castings from either ferrous or non-ferrous metals alloys. Metals are turned into parts by melting the metal into a liquid, pouring the metal in a mold, and then removing the mold material or casting....
 in the world. He published over 200 papers on his metallurgical research. Hadfield was knighted
British honours system

The United Kingdom honours system is a means of rewarding individuals' personal bravery, achievement, or service to the United Kingdom. The system consists of three types of award: honours, decorations and medals:...
 in 1908 and made a baronet
Baronet

A baronet or the rare female equivalent, a baronetess , is the holder of a hereditary title awarded by the British Crown known as a baronetcy....
 in 1917. He was elected as a Fellow of the Royal Society
Royal Society

The Royal Society of London for the Improvement of Natural Knowledge, known simply as the Royal Society, or even the Royal, is a learned society for science that was founded in 1660 and is considered by most to be the oldest such society still in existence....
 in 1909. He was awarded the John Fritz Medal
John Fritz Medal

The John Fritz Medal, referred to as the highest American award in the engineering profession, is presented each year for scientific or industrial achievement in any field of pure or applied science....
 in 1921 and the Albert Medal (RSA)
Albert Medal (RSA)

The Albert Medal of the Royal Society of Arts was instituted in 1864 as a memorial to Prince Albert, who had been President of the Society for 18 years....
 in 1935, both for his contributions to metallurgy
Metallurgy

Metallurgy is a domain of materials science that studies the physical and chemical behavior of metallic Chemical element, their intermetallics, and their mixtures, which are called alloys....
.

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

The University of Sheffield is a research university, located in Sheffield in South Yorkshire, England. Ranked within the World's top 100 Universities, it is one of the original Red brick universities and a member of the Russell Group....
, which contains the Department of Engineering Materials. There is also a wing at the Northern General Hospital
Northern General Hospital

The Northern General Hospital is a large teaching hospital in Sheffield, England. It hosts most major departments, including a busy Emergency department for adults ....
 named after him.

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