propertise of mild steel?

Answer 1

Plain-carbon steel is a metal alloy, a combination of two elements, iron and carbon, where other elements are present in quantities too small to affect the properties. Steel with a low carbon content has the same properties as iron, soft but easily formed. As carbon content rises the metal becomes harder and stronger but less ductile. Typical compositions of carbon are:

* Mild (low carbon) steel: 0.05% to 0.26% (e.g. AISI 1018 steel)[1]
* Medium carbon steel: 0.29% to 0.54% (e.g. AISI 1040 steel)[2]
* High carbon steel: 0.55% to 0.95%[3]
* Very high carbon steel: 0.96% to 2.1%

Steel can be heat-treated which allows parts to be fabricated in an easily-formable soft state. If enough carbon is present, the alloy can be hardened to increase strength, wear, and impact resistance. Steels are often wrought by cold-working methods, which is the shaping of metal through deformation at a low equilibrium or metastable temperature.