Iron has been used by human civilizations for over three millennia. The Iron Age saw the popularization of ironworking, as blacksmiths learnt to heat, hammer, and shape the metal into tools, weapons, ...

AISI 4140 (Cr–Mo) Alloy steel High strength, toughness, fatigue + wear resistance Shafts, spindles, crankshafts, heavy-duty parts Dynamic loading + heat-treated parts 304 Stainless (18/8) Austenitic ...

Steels that contain specified amounts of alloying elements -- other than carbon and the commonly accepted amounts of manganese, copper, silicon, sulfur, and phosphorus -- are known as alloy steels.

Hypersonic weapons are gaining global attention. Reports suggest China may be using advanced stainless steel alloys in missile components instead of costly aerospace materials. These missiles travel ...