Classification of martensitic stainless steel

Classification of martensitic stainless steel

(1) Martensitic chromium steel. In addition to chromium, steel also contains a certain amount of carbon. The chromium content determines the corrosion resistance of steel, and the higher the carbon content, the higher the strength, hardness and wear resistance. The normal structure of this type of steel is martensite, and some also contain a small amount of austenite, ferrite or pearlite. It is mainly used to manufacture parts, components, tools, knives, etc. that require high strength and hardness but not too high requirements for corrosion resistance. Typical steel grades include 2Crl3, 4Crl3, 9Crl8, etc.

1. 304 stainless steel 304 stainless steel is one of the most commonly used stainless steel materials and is favored for its good corrosion resistance, high temperature strength and easy processability. It is commonly used in the manufacture of food processing equipment, medical devices, architectural decoration, automobile parts, etc.

2. 316 stainless steel 316 stainless steel contains more nickel and molybdenum, so it performs better in terms of corrosion resistance and high temperature resistance. It is usually used in the manufacture of chemical equipment, marine equipment, medical equipment and other occasions that require high corrosiveness.

3. 430 stainless steel 430 stainless steel contains less nickel, so the price is relatively low. It is usually used to make kitchen utensils, pipes, storage cabinets, etc., but is not suitable for highly corrosive environments.