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. Precipitation hardening, also called age hardening or particle hardening, is a heat treatment that involves heating the alloy to a high temperature and cooling it quickly, thus freezing elements in place. It can also help provide superb high-temperature strength. The 14-4 PH alloy has more corrosion and wear resistance than the 400-series martensitic. The tensile strength is very high. The molybdenum in the 14-4 PH alloy aids the additional enhancements (corrosion resistance) compared to other high chromium stainless steels.

  • Typical Uses

    Aerospace, chemical and food processing equipment, cutting tools, knives, cylinders, gears, bearings, hollow shafts, landing gears, bushings, 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

0

Tensile, MPa

0

Yield, ksi

0

Yield, MPa

0

Elongation

0%

Heat Treatment: Solution Anneal, HOMOG, Age

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