Stainless steel is an alloy steel that usually includes the following grades:
- Ferritic stainless steel: including 201, 202, 301, 302, 304, 304L, 321 and other steel types, which are often used to make furniture, kitchen utensils, building materials, etc.
- Austenitic stainless steel: including 316, 316L, 317, 317L and other steel types, which have good corrosion resistance and are often used in the production of chemical equipment, marine equipment, medical equipment, etc.
- Martensitic stainless steel: including 410, 420, 430 and other steel types, which have good wear resistance and corrosion resistance, and are often used to make knives, locks, kitchen utensils, etc.
In addition, there are special steel types such as duplex stainless steel, super duplex stainless steel, and high-strength stainless steel, which have higher strength and corrosion resistance and are suitable for special environments and requirements.