Alloy Grade UNS: 14-4 PH – High Strength Stainless Steel

  • Overview

    14-4 PH alloy is an extremely high-strength stainless steel. The PH means precipitation hardening, which is a slight variation on classic heat treatment for Martensitic stainless steels. The 14-4 PH alloy has more corrosion resistance than the 400-series martensitic. The tensile strength is very high.

  • Typical Uses

    Aerospace, chemical and food processing equipment, cylinders, gears, hollow shafts, landing gears, marine gas turbine, nuclear flow control, pump and valve components, pressure vessels, shaft sleeves, turbine engine parts.

  • MetalTek Grade

    14-4 PH®

* Produced under license of AK Properties / ARMCO Advance Materials Corp.

Similar Specifications

Cast UNS: J92240

Cast Grade: 14-4 PH

Military/AMS: AMS 5340

Typical Chemical Composition (% by wt.)

Aluminum: n/a

Carbon: 0.06

Chromium: 13.50-14.25

Manganese: 0.7

Iron: n/a

Copper: 3.0-3.5

Nickel: 3.75-4.75

Lead: n/a

Tin: n/a

Silicon: 0.50-1.00

Zinc: n/a

Other: Mo 2.0-2.5; Nb 0.15-0.35; Ta 0.05 MAX; N 0.05 MAX

Minimum Mechanical Properties

Tensile, ksi


Tensile, MPa


Yield, ksi


Yield, MPa




Heat Treatment: Solution Anneal, HOMOG, Age