Stainless steel (ever silver) is of many varieties. The main constituent of stainless steel is Iron. The main alloying elements used are Nickel and Chromium. If the Chromium content is above 11%, this steel doesn’t rust. Nickel and Chromium are in solid solution in Iron. If the Chromium content is 15%, this steel has a shining appearance and has good commercial value. In business, the following three aspects are important: quality product, timely delivery and competitive price.