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R30075 Cobalt vs. C72150 Copper-nickel

R30075 cobalt belongs to the cobalt alloys classification, while C72150 copper-nickel belongs to the copper alloys. There are 26 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 C72150 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210 to 250
150
Elongation at Break, % 12
29
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 82 to 98
55
Tensile Strength: Ultimate (UTS), MPa 780 to 1280
490
Tensile Strength: Yield (Proof), MPa 480 to 840
210

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Melting Completion (Liquidus), °C 1360
1210
Melting Onset (Solidus), °C 1290
1250
Specific Heat Capacity, J/kg-K 450
410
Thermal Conductivity, W/m-K 13
22
Thermal Expansion, µm/m-K 12
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
3.6

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 8.1
6.1
Embodied Energy, MJ/kg 110
88
Embodied Water, L/kg 530
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 140
120
Resilience: Unit (Modulus of Resilience), kJ/m3 560 to 1410
150
Stiffness to Weight: Axial, points 14 to 17
9.1
Stiffness to Weight: Bending, points 24 to 25
20
Strength to Weight: Axial, points 26 to 42
15
Strength to Weight: Bending, points 22 to 31
15
Thermal Diffusivity, mm2/s 3.5
6.0
Thermal Shock Resistance, points 21 to 29
18

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
0
Cobalt (Co), % 58.7 to 68
0
Copper (Cu), % 0
52.5 to 57
Iron (Fe), % 0 to 0.75
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0 to 0.050
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 0.5
43 to 46
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0 to 0.2
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.5