The properties of steel can be improved in terms of fatigue, weldability, hardness, wear and corrosion resistance, ductility, and tensile strength by either alloy addition or heat treatment processes.
During the early 20 th Century, Metallurgist Harry Brearley invented stainless steel in Sheffield, UK. It contained approximately 6 - 15 weight % of chromium and 0.2 weight % of carbon. This alloy was ...
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