Stainless Steel Alloy 15-5 PH UNS S15500 XM-12

15-5 PH, also known as also known as UNS S15500 or XM-12. is a martensitic, precipitation-hardening stainless steel. Popular due to its high strength and good corrosion resistance, 15-5 PH also offers users a host of other benefits:

• Good mechanical properties at temperatures up to 600°F (316°C)
• Excellent longitudinal and transverse toughness
• Good in corrosive and high-pressure environments
• Equivalent weldability to 17-4 PH with greater toughness
• Low temperature hardening

Because of these outstanding characteristics, 15-5 PH is used to create gears, shafts, fittings, valves, cylinders, engine parts, and fasteners for a wide range of industries including:

• Aerospace
• Petrochemical
• Chemical
• Food Processing
• Pulp and Paper

In order to be sold as 15-5 PH stainless steel, an alloy must have a certain composition that includes:

• Fe Balance
• Cr 14-15.5%
• Ni 3.5-5.5%
• Cu 2.5-4.5%
• Si 1.0% max
• Mn 1.0% max
• Cb+Ta 0.15%-0.45%

Continental Steel can supply 15-5 PH in a number of popular shapes and sizes. As with all the products we sell, our selection of 15-5 PH stainless steel meets or exceeds all critical industry standards and specifications.

Common Surfaces

Stainless Steel Standards Comparison Table