AISI 17-4PH | EN 1.4542

Description

17-4PH stainless steel is a precipitation-hardening martensitic stainless steel alloy that contains 17% chromium, 4% nickel, and 3% copper. This steel is often referred to as "Type 630" due to its AISI designation. The addition of copper enhances the steel's resistance to corrosion and improves its mechanical properties. 17-4PH stainless steel is widely used in applications that require high strength, corrosion resistance, and good ductility.

17-4PH is a popular stainless steel grade in Aerospace and Nuclear sectors due to its excellent combination of good corrosion resistance and high strength. It is a widely-used martensitic precipitation-hardening stainless steel with a high concentration of chromium and nickel. It has many favorable properties, including excellent strength, good corrosion resistance, and excellent mechanical properties up to 316 °C. It is similar to 17-7PH but has lower Nickel content. It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this data sheet.