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Alloy 15-5

A precipitation hardenable chromium-nickel-copper stainless, Alloy 15-5 offers an outstanding combination of high strength and excellent corrosion resistance.

15-5 Stainless Steel is a martensitic precipitation-hardening stainless steel that provides an outstanding combination of high strength, good corrosion resistance and good mechanical properties at temperatures up to 316°C.


Product form Size range from Size range to
Alloy 15-5 round bar 10 mm 241.3 mm
Alloy 15-5 sheet & plate 6.35 mm 63.5 mm

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    Sheet & Plate

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    Round Bar

Chemical Analysis

% Ni Cr Mn Cu Si Nb+Ta C P S Fe
Min 3.5 14 - 2.5 - 0.15 - - - -
Max 5.5 15.5 1 4.5 1 0.45 0.07 0.04 0.03 Balance


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Perfect for applications in the Aerospace industry

Alloy 15-5 can be used in a variety of applications including:

  • Aerospace applications
  • Oil and gas applications

About Alloy 15-5

Alloy 15-5 was designed to have high strength with superior toughness than 17-4 PH. Alloy 15-5 is martensitic in structure in the annealed condition (ferrite free) and i is further strengthened by a relatively low temperature heat treatment which precipitates a copper containing phase in the alloy. Alloy 15-5 is also referred to as XM-12 in some specifications.

To find out more about 15-5 stainless steel then contact us, or fill in our online quote form and we’ll get right back to you!


7.75 g/cm³
Poisson's ratio :
Electrical resistivity:


UNS Number:
Werkstoff Number:
ASTM A564, A693, A705
Download the Alloy 15-5 Data Sheet Download

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