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R30075 Cobalt vs. AWS ERNiCrMo-10

R30075 cobalt belongs to the cobalt alloys classification, while AWS ERNiCrMo-10 belongs to the nickel alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R30075 cobalt and the bottom bar is AWS ERNiCrMo-10.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
220
Elongation at Break, % 12
28
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 82 to 98
84
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
790

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Melting Completion (Liquidus), °C 1360
1550
Melting Onset (Solidus), °C 1290
1490
Specific Heat Capacity, J/kg-K 450
420
Thermal Conductivity, W/m-K 13
10
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
1.5

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 8.1
12
Embodied Energy, MJ/kg 110
160
Embodied Water, L/kg 530
300

Common Calculations

Stiffness to Weight: Axial, points 14 to 17
14
Stiffness to Weight: Bending, points 24 to 25
23
Strength to Weight: Axial, points 26 to 42
25
Strength to Weight: Bending, points 22 to 31
21
Thermal Diffusivity, mm2/s 3.5
2.7
Thermal Shock Resistance, points 21 to 29
21

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0 to 0.015
Chromium (Cr), % 27 to 30
20 to 22.5
Cobalt (Co), % 58.7 to 68
0 to 2.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0 to 0.75
2.0 to 6.0
Manganese (Mn), % 0 to 1.0
0 to 0.5
Molybdenum (Mo), % 5.0 to 7.0
12.5 to 14.5
Nickel (Ni), % 0 to 0.5
49 to 63
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.080
Sulfur (S), % 0 to 0.010
0 to 0.010
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0 to 0.2
2.5 to 3.5
Vanadium (V), % 0
0 to 0.35
Residuals, % 0
0 to 0.5