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AWS ERNiMo-3 vs. R31537 Cobalt

AWS ERNiMo-3 belongs to the nickel alloys classification, while R31537 cobalt belongs to the cobalt alloys. There are 18 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is AWS ERNiMo-3 and the bottom bar is R31537 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
220
Poisson's Ratio 0.3
0.29
Shear Modulus, GPa 83
87
Tensile Strength: Ultimate (UTS), MPa 770
1000 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1600
1360
Melting Onset (Solidus), °C 1540
1290
Specific Heat Capacity, J/kg-K 400
450
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Density, g/cm3 9.1
8.4
Embodied Carbon, kg CO2/kg material 15
8.1
Embodied Energy, MJ/kg 190
110
Embodied Water, L/kg 270
530

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24
33 to 44
Strength to Weight: Bending, points 21
26 to 32
Thermal Shock Resistance, points 24
24 to 32

Alloy Composition


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Carbon (C), % 0 to 0.12
0 to 0.14
Chromium (Cr), % 4.0 to 6.0
26 to 30
Cobalt (Co), % 0 to 2.5
58.9 to 69
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 4.0 to 7.0
0 to 0.75
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 23 to 26
5.0 to 7.0
Nickel (Ni), % 53.7 to 69
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0 to 1.0
0
Vanadium (V), % 0 to 0.6
0
Residuals, % 0 to 0.5
0