• 9341 Penn Ave S, Bloomington, MN 55431
  • 800-447-3317

We sell 13-8 MO in a wide variety of forms: plate, rod, bar, sheet/strip, and wire.

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13-8MO VM is a precipitation hardened, vacuum melted stainless steel alloy with a toughness especially suited for the aerospace and nuclear energy industries. It's ability to be heat treated makes it extremely valuable when hardness and stress corrosion in severe conditions are the main concern.

This alloy features excellent strength and hardness, high resistance to both general and stress corrosion, and high ductility.

These properties make it especially useful for aircraft engine and landing gear parts, fittings, pins, fasteners, and valves. 13-8MO is also widely used in nuclear reactor components.

Chemical Data, Mechanical Properties and Specifications for 13-8 MO Stainless Steel

Chemical Range
Element Minimum Maximum
Aluminum 0.9 1.35
Carbon -- 0.05
Chromium 12.25 13.25
Iron Balance --
Manganese -- 0.2
Molybdenum 2 2.5
Nickel 7.5 8.5
Nitrogen -- 0.01
Phosphorus -- 0.01
Silicon -- 0.1
Sulphur -- 0.008


Typical Mechanical Properties
Temper Tensile Strength Yield Strength Elongation at Break
H950 225 ksi 210 ksi 12.0%
H1050 190 ksi 180 ksi 15.0%
H1150 145 ksi 105 ksi 20.0%


AMS 5629
AMS 2300
UNS S13800

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