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R30075 Cobalt vs. AWS ENiCrMo-3

R30075 cobalt belongs to the cobalt alloys classification, while AWS ENiCrMo-3 belongs to the nickel alloys. They have a modest 29% 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 ENiCrMo-3.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
200
Elongation at Break, % 12
34
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 82 to 98
79
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
870

Thermal Properties

Latent Heat of Fusion, J/g 320
330
Melting Completion (Liquidus), °C 1360
1480
Melting Onset (Solidus), °C 1290
1430
Specific Heat Capacity, J/kg-K 450
440
Thermal Conductivity, W/m-K 13
11
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
1.4

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.6
Embodied Carbon, kg CO2/kg material 8.1
14
Embodied Energy, MJ/kg 110
190
Embodied Water, L/kg 530
290

Common Calculations

Stiffness to Weight: Axial, points 14 to 17
13
Stiffness to Weight: Bending, points 24 to 25
23
Strength to Weight: Axial, points 26 to 42
28
Strength to Weight: Bending, points 22 to 31
24
Thermal Diffusivity, mm2/s 3.5
2.8
Thermal Shock Resistance, points 21 to 29
25

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0 to 0.1
Chromium (Cr), % 27 to 30
20 to 23
Cobalt (Co), % 58.7 to 68
0 to 0.12
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0 to 0.75
0 to 7.0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 5.0 to 7.0
8.0 to 10
Nickel (Ni), % 0 to 0.5
55 to 68.9
Niobium (Nb), % 0
3.2 to 4.2
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0 to 0.2
0
Residuals, % 0
0 to 0.5