General Description

15-5PH is a commonly used precipitation hardening stainless steel with excellent mechanical properties. The chromium and copper content of steel is lower than that of 17-4PH, and the nickel content is slightly increased. In addition to its high strength, 15-5PH has the outstanding advantages of high transverse toughness and good forgeability. Its corrosion resistance is comparable to that of 17-4PH.

15-5PH precision ground bar made by NIWIRE is mainly used in environments where high strength, good toughness, and excellent corrosion resistance are required. Such as high-pressure waterjets, high-strength forgings, high-pressure system valve components, aircraft parts, etc.

Chemical Composition

Grade Fe% Ni% Cr% C% Mn% Si% S% Cu% Nb% P%
15-5PH Bal. 3.5-5.5 14.0-15.5 Max 0.07 Max 1.0 Max 1.0 Max 0.03 2.5-4.5 0.15-0.45 Max 0.040


UNS S15500

Werkstoff Nr. 1.4545



15-5PH Bar: ASTM A564

15-5PH Sheet/Plate: ASTM A693

Physical Properties

Density:7.78 g/cm3

Melting Point: 1404°C-1440 °C


Ground Bar, Ground Rod, Sheet/Plate/Strip are available.

Mechanical Properties

Heat Treatment Tensile MPa Yield MPa Elongation %
H925 Min 1310 Min 1205 Min 16
H1025 Min 1140 Min 1105 Min 17
H1100 Min 1065 Min 1030 Min 19
H1150-M Min 890 Min 715 Min 23

    Request a Quote

    Fill in our online form to get a fast quote. for more general enquiries please email us at