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R30001 Cobalt vs. Grade N7M Nickel

R30001 cobalt belongs to the cobalt alloys classification, while grade N7M nickel belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is R30001 cobalt and the bottom bar is grade N7M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
220
Elongation at Break, % 1.0
22
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 86
85
Tensile Strength: Ultimate (UTS), MPa 620
590

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Melting Completion (Liquidus), °C 1530
1650
Melting Onset (Solidus), °C 1260
1590
Specific Heat Capacity, J/kg-K 430
390
Thermal Expansion, µm/m-K 11
9.9

Otherwise Unclassified Properties

Density, g/cm3 9.0
9.3
Embodied Carbon, kg CO2/kg material 8.9
16
Embodied Energy, MJ/kg 130
200
Embodied Water, L/kg 460
270

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 22
22
Strength to Weight: Axial, points 19
18
Strength to Weight: Bending, points 18
17
Thermal Shock Resistance, points 19
19

Alloy Composition

Carbon (C), % 2.0 to 3.0
0 to 0.070
Chromium (Cr), % 28 to 32
0 to 1.0
Cobalt (Co), % 43 to 59
0
Iron (Fe), % 0 to 3.0
0 to 3.0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0 to 1.0
30 to 33
Nickel (Ni), % 0 to 3.0
60.9 to 70
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 11 to 13
0