Steel is an alloy of iron and other elements that has been hardened and tempered. Cold worked steel consists of specially processed iron-cobalt, iron-copper and stainless steel. The term cold-forged is used when the material is heated to a low temperature (below the melting point) during forging. Hot-forged steel on the other hand refers to a material in which the change in temperature from quenching is so slight that it does not affect the strength of the material
Cold Forgin
The term cold forging refers to a process in which a solid piece of metal (the charge) is heated to a high temperature, then allowed to cool slowly in order to achieve a desired shape or size. This process can be used for making parts such as dies, rollers and gears
Hot Forgin
Hot forging is performed at high temperatures (between 1250~C and 1500~C), where there is rapid cooling after quenching. This creates a much stronger material than cold forged steel. Hot forging can be used for making gears, springs, gears and shafts among other things.
cold-worked easily and hot-forged metal