Stainless Steel Alloy 17-4 PH, UNS S17400

17-4 PH is a martensitic precipitation-hardening stainless steel also known as UNS S17400. 17-4 PH is popular with our clients because to its great mix of high strength and superior corrosion resistance. To be classified 17-4 PH, an alloy must include a distinct combination of chemical elements:

Fe Balance

Cr 15-17%

Ni 3-5%

Cu 3-5%

Mn 1.5% max

Si 0.7% max

Nb 0.45% max

Due to its unique composition, 17-4 PH offers a variety of advantages, including an excellent mix of oxidation and corrosion resistance as well as good mechanical qualities up to 600°F (316°C). 17-4 PH's hardness and tenacity are utilized by a vast array of industries. 17-4 PH is utilized by design engineers in the aerospace, chemical, food processing, metal working, paper and pulp, and petrochemical industries to produce:

Fasteners \sGears

Castings \sFittings

Marine Parts (propeller shafts, sailboat self steering systems)

Molding dies

Nuclear waste containers

Turbine blades

Valves

SSM is happy to distribute 17-4 PH stainless steel in a variety of sizes and forms, all of which satisfy the most stringent industrial standards.