Stainless steel is an alloy steel whose main components are iron, chromium, nickel, molybdenum and other elements. According to its composition, performance characteristics and uses, stainless steel can be divided into the following categories:
- Ferritic stainless steel: Mainly composed of iron and chromium, it has strong corrosion resistance and magnetic properties.
- Austenitic stainless steel: mainly composed of iron, chromium and nickel, has good corrosion resistance and plasticity, and is often used in the manufacture of high-temperature and high-pressure equipment.
- Ferritic-austenitic stainless steel: Composed of iron, chromium, nickel, molybdenum and other elements, it has high corrosion resistance and strength, and is often used in the fields of manufacturing chemicals, petroleum, and marine engineering.
- Martensitic stainless steel: mainly composed of iron, chromium and molybdenum, has high strength and wear resistance, and is often used in the manufacture of mechanical parts such as knives and bearings.
In addition, according to the different surface treatment methods and application fields of stainless steel, there are mirror stainless steel, sandblasting stainless steel, brushed stainless steel, titanium gold stainless steel and other types.