OEM custom precipitation hardening stainless steel castings are the casting parts which are produced of the kind of the precipitation hardening stainless steelstainless steel. The PH 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.