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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 formSize range fromSize range to
Alloy 15-5 round bar10 mm241.3 mm
Alloy 15-5 sheet & plate6.35 mm63.5 mm

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Sheet & Plate

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Round Bar

Chemical Analysis



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Perfect for applications in the Aerospace industry

Alloy 15-5 can be used in a variety of applications, here are just a few examples:

  • 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 it 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:
ASTM A564, A693, A705
Download the Alloy 15-5 Data Sheet Download

FAQs & Resources

High strength alloys usually refer high-strength low-alloy (HSLA) steels or micro-alloyed steels. These alloys are engineered to have better mechanical and corrosion resistant than carbon steels for specific conditions. These are not to be confused by the precipitation hardened or aged hardened grades which are classed as high-strength stainless steel or nickel-based alloys. More information on HSLA can be found on the ASM international website.

You can download our current approvals from our quality page.

After the order has been processed, domestic shipping usually takes 1-2 days to deliver and 2-4 days for international shipment. NeoNickel offers express delivery option. Please ask your sales contact for more information.

Request a Quote

Fill in our online form to get a fast quote. Got a technical question? Contact us on techsales@neonickel.com or for more general enquiries please email us at enquiries@neonickel.com