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AISI 422 Stainless Steel vs. S31655 Stainless Steel

Both AISI 422 stainless steel and S31655 stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AISI 422 stainless steel and the bottom bar is S31655 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260 to 330
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 15 to 17
39
Fatigue Strength, MPa 410 to 500
300
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Shear Strength, MPa 560 to 660
490
Tensile Strength: Ultimate (UTS), MPa 910 to 1080
710
Tensile Strength: Yield (Proof), MPa 670 to 870
350

Thermal Properties

Latent Heat of Fusion, J/g 270
290
Maximum Temperature: Corrosion, °C 380
430
Maximum Temperature: Mechanical, °C 650
1010
Melting Completion (Liquidus), °C 1480
1430
Melting Onset (Solidus), °C 1470
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 24
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.7
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 5.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 11
17
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.1
3.3
Embodied Energy, MJ/kg 44
46
Embodied Water, L/kg 100
160

Common Calculations

PREN (Pitting Resistance) 17
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
230
Resilience: Unit (Modulus of Resilience), kJ/m3 1140 to 1910
310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32 to 38
25
Strength to Weight: Bending, points 26 to 30
23
Thermal Diffusivity, mm2/s 6.4
4.0
Thermal Shock Resistance, points 33 to 39
16

Alloy Composition

Carbon (C), % 0.2 to 0.25
0 to 0.030
Chromium (Cr), % 11 to 12.5
19.5 to 21.5
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 81.9 to 85.8
63.2 to 71.9
Manganese (Mn), % 0.5 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.9 to 1.3
0.5 to 1.5
Nickel (Ni), % 0.5 to 1.0
8.0 to 9.5
Nitrogen (N), % 0
0.14 to 0.25
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.015
Tungsten (W), % 0.9 to 1.3
0
Vanadium (V), % 0.2 to 0.3
0