Precipitation hardening stainless steel can be divided according to their organization martensitic precipitation hardening qiyi 304 stainless steel sheet ( as represented in 0Crl7Ni4Cu4Nb ) , semi-austenitic precipitation hardening stainless steel ( as represented in 0Crl7Ni7Al and 0Crl5Ni25Ti2MoVB ) plus ferritic and austenitic precipitation hardening stainless steel ( with PH55A , B, C as a representative ) . The use of such material after the aging heat treatment to precipitate Cu, Al, Ti, Nb , etc. to increase the strength of a metal compound material . The main features are:
1 , this type of stainless steel can be adjusted by means of the performance of the heat treatment process , so that the molding of the steel , the device manufacturing process is easy to process and easy forming tissue state . By semi-austenitic precipitation hardening stainless martensitic transformation and precipitation hardening austenitic , martensitic precipitation hardening qiyi stainless steel 304 by precipitation hardening treatment so as to have high strength and good toughness .
2 , chromium content of about 17% , plus contain nickel , molybdenum and other elements , therefore , in addition to having enough sex outside of stainless , corrosion resistance is close to 18-8 austenitic stainless steel.
