Stainless steel has different corrosion properties which include being non-corrosive, rust-resistant steel, which is simply designated as stainless steel. In comparison with aluminum, stainless steel is approximately 3 times heavier.
Stainless steel, like steel itself, is an alloy. An alloy always consists of different materials. Among the most frequent alloying elements in non-corrosive stainless steel is chrome, where nickel, molybdenum, and further elements are used for special requirements.