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Grade CW2M Nickel vs. R30075 Cobalt

Grade CW2M nickel belongs to the nickel alloys classification, while R30075 cobalt belongs to the cobalt alloys. They have a modest 24% 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 (7, in this case) are not shown.

For each property being compared, the top bar is grade CW2M nickel and the bottom bar is R30075 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210 to 250
Elongation at Break, % 23
12
Fatigue Strength, MPa 190
250 to 840
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 83
82 to 98
Tensile Strength: Ultimate (UTS), MPa 560
780 to 1280
Tensile Strength: Yield (Proof), MPa 310
480 to 840

Thermal Properties

Latent Heat of Fusion, J/g 330
320
Melting Completion (Liquidus), °C 1520
1360
Melting Onset (Solidus), °C 1460
1290
Specific Heat Capacity, J/kg-K 430
450
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.4
Embodied Carbon, kg CO2/kg material 12
8.1
Embodied Energy, MJ/kg 170
110
Embodied Water, L/kg 290
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
84 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 220
560 to 1410
Stiffness to Weight: Axial, points 13
14 to 17
Stiffness to Weight: Bending, points 23
24 to 25
Strength to Weight: Axial, points 18
26 to 42
Strength to Weight: Bending, points 17
22 to 31
Thermal Shock Resistance, points 16
21 to 29

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Boron (B), % 0
0 to 0.010
Carbon (C), % 0 to 0.020
0 to 0.35
Chromium (Cr), % 15 to 17.5
27 to 30
Cobalt (Co), % 0
58.7 to 68
Iron (Fe), % 0 to 2.0
0 to 0.75
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 15 to 17.5
5.0 to 7.0
Nickel (Ni), % 60.1 to 70
0 to 0.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
0 to 0.1
Tungsten (W), % 0 to 1.0
0 to 0.2