Stainless steel is a type of metal that is made up of several different alloys. The most common type of stainless steel is 18/8, which is a combination of 18% chromium and 8% nickel. Other alloys include 12/10, 10/8, and 5/4. The main difference between these metals is the amount of nickel they contain. Stainless steel does not corrode in water or soil like other metals do, making it a popular choice for trailers because it doesn’t rust or corrode.