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AWS ERNiCrMo-4 vs. G-CoCr28 Cobalt

AWS ERNiCrMo-4 belongs to the nickel alloys classification, while G-CoCr28 cobalt belongs to the cobalt alloys. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 20 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS ERNiCrMo-4 and the bottom bar is G-CoCr28 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 28
6.7
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 84
83
Tensile Strength: Ultimate (UTS), MPa 790
560

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Melting Completion (Liquidus), °C 1590
1330
Melting Onset (Solidus), °C 1530
1270
Specific Heat Capacity, J/kg-K 410
470
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 70
100
Density, g/cm3 9.0
8.1
Embodied Carbon, kg CO2/kg material 13
6.2
Embodied Energy, MJ/kg 170
84
Embodied Water, L/kg 280
440

Common Calculations

Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 24
19
Strength to Weight: Bending, points 21
19
Thermal Shock Resistance, points 22
14

Alloy Composition


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Carbon (C), % 0 to 0.020
0.050 to 0.25
Chromium (Cr), % 14.5 to 16.5
27 to 30
Cobalt (Co), % 0 to 2.5
48 to 52
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 4.0 to 7.0
9.7 to 24.5
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 15 to 17
0 to 0.5
Nickel (Ni), % 50 to 63.5
0 to 4.0
Niobium (Nb), % 0
0 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.080
0.5 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 3.0 to 4.5
0
Vanadium (V), % 0 to 0.35
0
Residuals, % 0 to 0.5
0