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AWS ERNiMo-3 vs. S31254 Stainless Steel

AWS ERNiMo-3 belongs to the nickel alloys classification, while S31254 stainless steel belongs to the iron alloys. They have a modest 36% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is AWS ERNiMo-3 and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
200
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 83
80
Tensile Strength: Ultimate (UTS), MPa 770
720

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Melting Completion (Liquidus), °C 1600
1460
Melting Onset (Solidus), °C 1540
1420
Specific Heat Capacity, J/kg-K 400
460
Thermal Expansion, µm/m-K 11
17

Otherwise Unclassified Properties

Base Metal Price, % relative 70
28
Density, g/cm3 9.1
8.0
Embodied Carbon, kg CO2/kg material 15
5.5
Embodied Energy, MJ/kg 190
74
Embodied Water, L/kg 270
190

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24
25
Strength to Weight: Bending, points 21
22
Thermal Shock Resistance, points 24
15

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.020
Chromium (Cr), % 4.0 to 6.0
19.5 to 20.5
Cobalt (Co), % 0 to 2.5
0
Copper (Cu), % 0 to 0.5
0.5 to 1.0
Iron (Fe), % 4.0 to 7.0
51.4 to 56.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 23 to 26
6.0 to 6.5
Nickel (Ni), % 53.7 to 69
17.5 to 18.5
Nitrogen (N), % 0
0.18 to 0.22
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.010
Tungsten (W), % 0 to 1.0
0
Vanadium (V), % 0 to 0.6
0
Residuals, % 0 to 0.5
0