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R30605 Cobalt vs. AWS ERNiCr-3

R30605 cobalt belongs to the cobalt alloys classification, while AWS ERNiCr-3 belongs to the nickel alloys. They have a modest 33% 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 (7, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is AWS ERNiCr-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
34
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
75
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
630

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Melting Completion (Liquidus), °C 1410
1380
Melting Onset (Solidus), °C 1330
1330
Specific Heat Capacity, J/kg-K 410
460
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.4
Embodied Carbon, kg CO2/kg material 9.8
11
Embodied Energy, MJ/kg 140
160
Embodied Water, L/kg 450
280

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 33 to 55
21
Strength to Weight: Bending, points 25 to 36
19
Thermal Shock Resistance, points 31 to 52
18

Alloy Composition


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Carbon (C), % 0.050 to 0.15
0 to 0.1
Chromium (Cr), % 19 to 21
18 to 22
Cobalt (Co), % 46.4 to 57
0 to 0.12
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0 to 3.0
0 to 3.0
Manganese (Mn), % 1.0 to 2.0
2.5 to 3.5
Nickel (Ni), % 9.0 to 11
67 to 77.5
Niobium (Nb), % 0
2.0 to 3.0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0 to 0.75
Tungsten (W), % 14 to 16
0
Residuals, % 0
0 to 0.5