Stainless steels are high-alloy steels. They contain about 4-30% of chromium. They are classified into three types such as martensitic, austenitic, and ferritic steels. Another group of stainless ...

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 ...