Editorial Feature

Stainless Steel – Grade 422 (UNS S42200)

Stainless steels are high-alloy steels that possess good corrosion resistance in comparison with other steels due to additional chromium content.

Based on their crystalline structure, stainless steels are generally divided into three groups, namely, martensitic, austenitic and ferritic. A combination of martensitic and ferritic steels forms a fourth group called the precipitation-hardened steels.

The following datasheet provides an overview of grade 422 stainless steel.

The chemical composition of grade 422 stainless steel is outlined in the following table.

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 following table shows the physical properties of grade 422 stainless steel.

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

Mechanical Properties

The mechanical properties of grade 422 stainless steel are displayed in the following table.

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 thermal properties of grade 422 stainless steel are given in the following table.

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

Equivalent materials to grade 422 stainless steel are:

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

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