Stainless Steel is a form of steel containing chromium. It is resistant to tarnishing, corrosion and rust associated with exposure to water or moist air. There are numerous types of stainless steel such as 17-4, 300, 304, 310, 316, 321 and 400 Series that bigger facilities mostly generate. However, homeowners and demolition companies will sell items such as old sinks, gas grills and kitchen appliances.