Editorial Feature

Stainless Steel - Grade 422 (UNS S42200)

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Stainless steels are high-alloy steels that exhibit better corrosion resistance than other steels. This is because of the increased chromium content.

Stainless steels usually fall into three groups depending on their crystalline structure—austenitic, martensitic, and ferritic. A blend of ferritic and martensitic steels forms a fourth group known as the precipitation-hardened steels.

This article offers an overview of Grade 422 stainless steel.

The chemical composition of Grade 422 stainless steel has been illustrated in the table below.

Chemical Composition

Element Content (%)
Iron, Fe ~ 82
Chromium, Cr 11.0-13.0
Manganese, Mn 1.00
Nickel, Ni 0.5-1.0
Molybdenum, Mo 0.75-1.25
Tungsten, W 0.75-1.25
Silicon, Si 0.75
Carbon, C 0.20-0.25
Vanadium, V 0.15-0.3
Phosphorous, P 0.025
Sulfur, S 0.025


Physical Properties

The physical properties of Grade 422 stainless steel are provided in the table below.

Properties Metric Imperial
Density 7.8 g/cm3 0.2817 lb/in³


Mechanical Properties

The mechanical properties of Grade 422 stainless steel are given in the table below.

Properties Metric Imperial
Elastic modulus 190-210 GPa 27557–30458 ksi
Poisson's ratio 0.27-0.30 0.27-0.30


Thermal Properties

The table below illustrates the thermal properties of Grade 422 stainless steel.

Properties Conditions
T (ºC) Treatment
Thermal expansion 11.2 x 10-6/ºC 0-100 -
Thermal conductivity 23.9 x W/m.K 100 -


Other Designations

Materials similar to Grade 422 stainless steel are:

  • ASTM A565
  • AISI 422
  • AMS 5655
  • GE B50A125E
  • DIN 1.4935
  • SAE J467
  • SAE 51422

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