Stainless steel is primarily made from iron, with chromium being the key element that gives it its stainless properties. Typically, stainless steel contains at least 10.5% chromium by mass, which provides resistance to corrosion and staining when exposed to moisture. Other elements, such as nickel and molybdenum, are often added to enhance specific properties like strength, ductility, and heat resistance. This combination of metals results in a durable material that is widely used in various applications, including kitchenware, medical instruments, construction, and automotive components, thanks to its strength and ability to resist rust and tarnishing.