Stainless steel is an alloy of iron and carbon, like all other kinds of steel, but what makes it different is the addition of chromium and other alloying elements such as nickel to create a corrosion-resistant product. The exact components and ratios of the alloy will vary based on the grade requested and the intended use of the steel. The chromium in stainless steel reacts with oxygen to form a layer of chromium oxide on the surface of the material, which is what gives stainless steel its corrosion-resistant property. This layer is passive and protects the material from further corrosion and self-heals in the presence of oxygen. The exact composition of an alloy is strictly measured and assessed throughout the alloying process to ensure the steel exhibits the required qualities. In addition to chromium, stainless steels are made with alloys of silicon, nickel, carbon, nitrogen, and manganese, among others. The resulting steel is high and low temperature resistant, easily fabricated, strong and durable, easy to clean and maintain, long-lasting, aesthetically attractive, environmentally friendly, and recyclable.