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AISI 422 Stainless Steel vs. S31254 Stainless Steel

Both AISI 422 stainless steel and S31254 stainless steel are iron alloys. They have 68% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AISI 422 stainless steel and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260 to 330
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 15 to 17
40
Fatigue Strength, MPa 410 to 500
290
Poisson's Ratio 0.28
0.28
Reduction in Area, % 34 to 40
56
Shear Modulus, GPa 76
80
Shear Strength, MPa 560 to 660
490
Tensile Strength: Ultimate (UTS), MPa 910 to 1080
720
Tensile Strength: Yield (Proof), MPa 670 to 870
330

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 380
420
Maximum Temperature: Mechanical, °C 650
1090
Melting Completion (Liquidus), °C 1480
1460
Melting Onset (Solidus), °C 1470
1420
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 24
14
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.7
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 5.3
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 11
28
Density, g/cm3 7.9
8.0
Embodied Carbon, kg CO2/kg material 3.1
5.5
Embodied Energy, MJ/kg 44
74
Embodied Water, L/kg 100
190

Common Calculations

PREN (Pitting Resistance) 17
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
240
Resilience: Unit (Modulus of Resilience), kJ/m3 1140 to 1910
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32 to 38
25
Strength to Weight: Bending, points 26 to 30
22
Thermal Diffusivity, mm2/s 6.4
3.8
Thermal Shock Resistance, points 33 to 39
15

Alloy Composition

Carbon (C), % 0.2 to 0.25
0 to 0.020
Chromium (Cr), % 11 to 12.5
19.5 to 20.5
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 81.9 to 85.8
51.4 to 56.3
Manganese (Mn), % 0.5 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.3
6.0 to 6.5
Nickel (Ni), % 0.5 to 1.0
17.5 to 18.5
Nitrogen (N), % 0
0.18 to 0.22
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.8
Sulfur (S), % 0 to 0.025
0 to 0.010
Tungsten (W), % 0.9 to 1.3
0
Vanadium (V), % 0.2 to 0.3
0