Austenitic stainless steel

Austenitic stainless steel refers to stainless steel with austenitic structure at room temperature. When the steel contains about 18% Cr, 8% ~ 25% Ni and 0.1% C, it has stable austenite structure. Austenitic chromium nickel stainless steel includes the famous 18Cr-8Ni steel and the high Cr Ni series steel developed by increasing the content of Cr and Ni and adding Mo, Cu, Si, Nb, Ti and other elements. Austenitic stainless steel is non-magnetic and has high toughness and plasticity, but its strength is low. It cannot be strengthened by phase transformation. It can only be strengthened by cold working. If elements such as s, CA, Se and TE are added, it has good free cutting property.

In addition to being resistant to oxidizing acid medium corrosion, this kind of steel can also be resistant to sulfuric acid, phosphoric acid, formic acid, acetic acid, urea and other corrosion if it contains Mo, Cu and other elements. If the carbon content of this kind of steel is less than 0.03% or contains Ti and Ni, its intergranular corrosion resistance can be significantly improved. Austenitic stainless steel with high silicon has good corrosion resistance to concentrated nitric acid. Austenitic stainless steel has been widely used in all walks of life because of its comprehensive and good comprehensive properties.

Austenitic stainless steel grades include 201,202,301,302,304,305,309,310,312,316,904,317,321,S32654,S34565,347etc.