Precipitation Hardened


17/4PH is a martensitic precipitation hardened stainless steel. This grade derives its name from its chemical composition; 17% Chromium, 4% Nickel.

Age hardening is achieved using different temperatures to provide structured mechanical properties which form the recognised conditions of 17/4PH. Each condition denotes the approximate temperature of the aging process in °F. This heat treatment is followed by a cooling process, which can vary based on the condition of 17/4PH.

17/4PH combines high strength, toughness and corrosion resistance comparable to austenitic 304. This grade is also magnetic.

Our stock is generally produced in accordance with ASTM A564 Grade 630.