Stainless steel is a metal alloy, made up of steel mixed with elements such as chromium, nickel, molybdenum, silicon, aluminum, and carbon. Iron mixed with carbon to produce steel is the main component of stainless steel. Stainless steels are made of some of the basic elements found in the earth: iron ore, chromium, silicon, nickel, carbon, nitrogen, and manganese. Properties of the final alloy are tailored by varying the amounts of these elements. Nitrogen, for instance, improves tensile properties like ductility. It also improves corrosion resistance, which makes it valuable for use in duplex stainless steels. Stainless Steel Grades are available in different series. All the different series are as under. 200 Series—Austenitic Chromium-Nickel-Manganese Alloys. 300 Series—Austenitic Chromium-Nickel Alloys Available grades in 300 series: Type 301, Type 302, Type 303, Type 304, Type 309, Type 316, Type 321, etc.. In 300 series 304 & 316 is the most useful grade for vari...