15-5 PH stainless steel is a martensitic precipitation-hardening stainless steel with approximately 15% Chromium and 5% Nickel. It has high strength, high hardness, and excellent corrosion resistance. Strength can be further increased by a single low temperature heat treatment. Compared to 17-4 PH, it offers better transverse toughness and ductility; better mechanical properties in larger cross-sections, and better forgeability. It is readily weldable. It can be machined in any of the several Thermal Conditions available to this grade.
Service Steel Aerospace is one of the largest distributors / suppliers of 15-5 PH Stainless Steel available in several forms including stainless steel round bar, flat bar, and square bar as well as stainless steel plate, sheet, block, and billet. See below for product size ranges stocked.
15-5 PH stainless steel is typically used in the following applications:
Aerospace structural components
Gears and Shafts
Oil and Gas components
Nuclear reactor components