Carbon steel is a malleable,
iron-based metal containing less than 2%
carbon (usually less than 1%), small amounts
of manganese, and other trace elements.
Steels can either be cast to shape or wrought
into various mill forms from which finished
parts are formed, machined, forged, stamped,
or otherwise shaped. Carbon steels are specified
by chemical composition, mechanical properties,
method of deoxidation, or thermal treatment.
See Reference Table - AISI-SAE
Carbon Steel & Alloy Designations