Stainless steel: 17-7PH (sus631)
17-7PH is 18-8CrNi developed on the basis of austenitic - martensitic precipitation hardening stainless steel, stainless steel, also known as phase-change control. After solution treatment for unstable austenite, with good plasticity and toughness and workability, after adjustment, the austenite carbide precipitation climate change, and then through the martensitic transformation process, most organizations into toughness preferably carbon tempered martensite, in this state to use state of the steel, a good intermediate temperature mechanical properties. Corrosion resistance than martensitic stainless steel.