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R30075 Cobalt vs. AWS ENiCrMo-4

R30075 cobalt belongs to the cobalt alloys classification, while AWS ENiCrMo-4 belongs to the nickel alloys. They have a modest 24% 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 (10, in this case) are not shown.

For each property being compared, the top bar is R30075 cobalt and the bottom bar is AWS ENiCrMo-4.

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
1590
Melting Onset (Solidus), °C 1290
1530
Specific Heat Capacity, J/kg-K 450
410
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 8.4
9.0
Embodied Carbon, kg CO2/kg material 8.1
13
Embodied Energy, MJ/kg 110
170
Embodied Water, L/kg 530
280

Common Calculations

Stiffness to Weight: Axial, points 14 to 17
13
Stiffness to Weight: Bending, points 24 to 25
22
Strength to Weight: Axial, points 26 to 42
24
Strength to Weight: Bending, points 22 to 31
21
Thermal Shock Resistance, points 21 to 29
22

Alloy Composition

Aluminum (Al), % 0 to 0.1
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.35
0 to 0.020
Chromium (Cr), % 27 to 30
14.5 to 16.5
Cobalt (Co), % 58.7 to 68
0 to 2.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0 to 0.75
4.0 to 7.0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 5.0 to 7.0
15 to 17
Nickel (Ni), % 0 to 0.5
49.9 to 63.5
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0 to 0.2
3.0 to 4.5
Vanadium (V), % 0
0 to 0.35
Residuals, % 0
0 to 0.5