Stainless steel has different corrosion properties which include being non-corrosive, rust-resistant steel, which is simply designated as stainless steel. In comparison with aluminium, 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.
The Magnetisability, as well as the corrosion resistance, are two of these requirements which are controlled by the different alloys.