and what are the four main elements in STAINLESS steel? x
decreasing the carbon content fabric will strengthen the ductility, which will make it greater versatile. Carbon in metallic varieties brittle cementite (iron carbide) which will strengthen the hardness and capability of metallic.
Very high carbon steel (0.96 to 2.11%) is hard and not very ductile (difficult to mold or shape). It is also difficult to weld, but has the lowest melting point. As the carbon content is reduced, the steel becomes softer, more ductile and melts at a higher temperature. Stainless steel is an alloy of Iron, Carbon, Chromium. The fourth element would depend upon the grade of steel, but Nickel is probably the most common.