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17-4 PH is a precipitation hardening stainless steel grade and is a high strength, high hardness, excellent corrosion resistant and easy heat treatable material. It is widely used in the aerospace, chemical, petrochemical, food processing, paper and general metalworking industries.

S17400 alloy is martensitic in structure in the annealed condition and is further strengthened by a low temperature treatment which precipitates a copper containing phase in the alloy. Comes in several conditions A, H900, H1075 and H1150.

Some of the end use applications are pump shafts, valve stems, balls, gates, bushings and trim: mixing screws, fasteners, couplings, rocket hold-downs, wear rings, rollers, hydraulic actuators, load cells and screws.

Chemical Properties

Mechanical Properties

        * Values displayed are typical mechanical properties for 17-4PH in the annealed (condition A).

Additional Specs

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