Commonly used stainless steel grades and properties

1.304 stainless steel. It is one of the most widely used austenitic stainless steels with a large amount of applications. It is suitable for manufacturing deep drawing formed parts, acid transmission pipes, vessels, structural parts, various instrument bodies, etc. as well as non-magnetic and low-temperature equipment and components.

2.304L stainless steel. The ultra-low carbon austenitic stainless steel developed to solve the serious intergranular corrosion tendency of 304 stainless steel caused by Cr23C6 precipitation under some conditions, its sensitized intergranular corrosion resistance is significantly better than 304 stainless steel. Except for lower strength, other properties are the same as 321 stainless steel. It is mainly used for corrosion resistant equipment and parts that need welding but cannot be solution treated, and can be used to manufacture various instrument bodies.

3.304H stainless steel. For the internal branch of 304 stainless steel, the carbon mass fraction is 0.04% - 0.10%, and the high temperature performance is superior to 304 stainless steel.

4.316 stainless steel. The addition of molybdenum on the basis of 10Cr18Ni12 steel makes the steel have good resistance to reducing medium and pitting corrosion. In seawater and other media, the corrosion resistance is superior to 304 stainless steel, mainly used for pitting corrosion resistant materials.

5.316L stainless steel. Ultra low carbon steel, with good resistance to sensitized intergranular corrosion, is suitable for manufacturing thick section size welding parts and equipment, such as anti-corrosion materials in petrochemical equipment.