Precipitation Hardening stainless steels are chromium and nickel-containing steels that provide an optimum combination of the properties of Martensitic and Austenitic grades. Like Martensitic grades stainless steels, they are known for their ability to gain high strength through heat treatment and they also have corrosion resistance of austenitic stainless steel. https://www.laxconsteels.com/products/precipitation-hardening-steel