Precipitation Hardening Stainless Steel Casting
Precipitation hardening stainless steel refers to the kind of stainless steel which adds different types and quantities of strengthening elements, and different types and quantities of carbides, nitrides, carbonitrides and intermetallic compounds are precipitated through the precipitation hardening process. Precipitation hardening stainless steel not only has high strength, but also has good toughness and corrosion resistance. For precipitation hardening steel castings containing copper, the hardness of the steel castings is increased due to the precipitation of hard copper-rich phases in the as-cast state during the cooling process. In order to soften the structure and improve the processing performance, such steel castings require solution heat treatment. The solid solution temperature of precipitation hardening steel castings containing copper is generally 900 ℃ ~ 950 ℃. After cooling, a supersaturated single-phase structure with a copper mass fraction of 1.0% ~ 1.5% can be obtained.
Precipitation hardening stainless steel is widely used in advanced industries. For example, the typical precipitation hardening stainless steel 17-4PH can be used to make structures below 370°C that require corrosion resistance, wear resistance, and high strength.
RMC Foundry Cast the Following Typical Grades of Precipitation Hardening Stainless Steel
1- Chinese standards: 05Cr15Ni5Cu4Nb, 05Cr17Ni4Cu4Nb
2- British Standard: ANC20, ANC21, ANC22
3- American standards: 630, 634, 17-4PH, 15-5PH, CB7Cu-1
4- Japanese standards: SCS24, SCS32
5- German Standard: 1.4542