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R30008 Cobalt vs. AWS ERNiCrMo-2

R30008 cobalt belongs to the cobalt alloys classification, while AWS ERNiCrMo-2 belongs to the nickel alloys. They have 60% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R30008 cobalt and the bottom bar is AWS ERNiCrMo-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 83
81
Tensile Strength: Ultimate (UTS), MPa 950 to 1700
750

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1330
1410
Specific Heat Capacity, J/kg-K 450
450
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 95
55
Density, g/cm3 8.4
8.4
Embodied Carbon, kg CO2/kg material 8.1
9.2
Embodied Energy, MJ/kg 110
120
Embodied Water, L/kg 400
270

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 31 to 56
25
Strength to Weight: Bending, points 25 to 37
22
Thermal Shock Resistance, points 25 to 44
20

Alloy Composition

Boron (B), % 0 to 0.0010
0
Carbon (C), % 0 to 0.15
0.050 to 0.15
Chromium (Cr), % 18.5 to 21.5
20.5 to 23
Cobalt (Co), % 39 to 42
0.5 to 2.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 7.6 to 20
17 to 20
Manganese (Mn), % 1.0 to 2.0
0 to 1.0
Molybdenum (Mo), % 6.5 to 7.5
8.0 to 10
Nickel (Ni), % 15 to 18
40.3 to 53.8
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 1.2
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 0
0.2 to 1.0
Residuals, % 0
0 to 0.5