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AISI 431 Stainless Steel vs. AWS ERNiCrMo-2

AISI 431 stainless steel belongs to the iron alloys classification, while AWS ERNiCrMo-2 belongs to the nickel alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is AISI 431 stainless steel and the bottom bar is AWS ERNiCrMo-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
81
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
750

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Melting Completion (Liquidus), °C 1510
1460
Melting Onset (Solidus), °C 1450
1410
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 26
11
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
55
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 2.2
9.2
Embodied Energy, MJ/kg 31
120
Embodied Water, L/kg 120
270

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 32 to 50
25
Strength to Weight: Bending, points 27 to 36
22
Thermal Diffusivity, mm2/s 7.0
2.9
Thermal Shock Resistance, points 28 to 43
20

Alloy Composition

Carbon (C), % 0 to 0.2
0.050 to 0.15
Chromium (Cr), % 15 to 17
20.5 to 23
Cobalt (Co), % 0
0.5 to 2.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 78.2 to 83.8
17 to 20
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
8.0 to 10
Nickel (Ni), % 1.3 to 2.5
40.3 to 53.8
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0
0.2 to 1.0
Residuals, % 0
0 to 0.5