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Stainless Steel 422

422 is a hardenable martensitic stainless steel which is being widely used for high temperatures up to 1200°F. It has excellent creep-rupture properties in the range of 600/1200°F and is capable of being heat treated to various high strength levels depending on section, form, and application involved. Crucible 422 offers designers in the aircraft and power industries high strength/weight ratios from room temperature to 1200°F. The composition is carefully balanced to provide a microstructure which is virtually all tempered martensite after heat treatment. This structure assures uniformity of mechanical properties with a minimum of directionality.

422 Stainless Steel is a hardenable martensitic stainless steel which is being widely used for high temperatures up to 1200°F. It has excellent creep-rupture properties in the range of 600/1200°F and is capable of being heat treated to various high strength levels depending on section, form, and application involved.422 offers designers in the aircraft and power industries high strength/weight ratios from room temperature to 1200°F.

Chemical Properties

Element min max
Carbon 0.20 0.25
Manganese 1.00
Silicon 0.20 0.60
Phosphorus 0.040
Sulfur 0.030
Chromium 11.00 13.50
Nickel 0.50  1.00
Molybdenum 0.75  1.25
Tungsten 0.75  1.25
Vanadium 0.17 0.30
Copper 0.50

Mechanical Properties (Solution Heat Treated -Room Temp)

Property Value
Tensile Strength 140 ksi (965 MPa)
Yield Strength at 0.2% Offset 115 ksi (793 MPa)
Elongation in 4D 13%
Reduction of Area 25%

Select AMS Number:

AMS Number Alloy Type UNS Cross Ref. Spec Misc./Shape
AMS 5655 422 Stainless Steel S42200  
AMS 5655 Bar 422 Stainless Steel S42200 GE B50A951A1 Bar AMS 5655 Bar
AMS 5655 Forging 422 Stainless Steel S42200 GE B50A951A1 Forging AMS 5655 Forging
AMS 5655 Wire 422 Stainless Steel S42200 GE B50A951A1 Wire AMS 5655 Wire