The AISI/SS 301 Coil is the AISI certified coils made of stainless steel. These stainless steel coils are in great demand as they are having a very versatile use. These coils suffer various hardness levels for the different type of coil but all the coils are having the same mechanical properties except hardness. They are having different levels of hardness as 1/16 to fully hard. This coil is composed of chromium and nickel. The hardness of these coils varies due to a different level of tensile strength and yield strength. It is having higher ductility and elongation.