For recycling purposes, Greener Recycling scrap yard buys steel of grades 304 and 316. They can be found in household appliances, car and boat parts, cooking equipment as well as in tubes, various bars and rails, sheets and plates.

304 steel is comprised of iron, chromium and nickel, while 316 is alloyed with molybdenum instead of nickel and is more expensive. 
It poses a significant difficulty for sellers to define the type of the alloy they have. In scrap traders’ yards, stainless steel is typically confused with aluminum. Metal analyzers are of great help in this, as well as an expert from a scrap yard.