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R31538 Cobalt vs. C55180 Copper

R31538 cobalt belongs to the cobalt alloys classification, while C55180 copper belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R31538 cobalt and the bottom bar is C55180 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 13 to 23
20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 86
41
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
200
Tensile Strength: Yield (Proof), MPa 580 to 930
100

Thermal Properties

Latent Heat of Fusion, J/g 320
200
Melting Completion (Liquidus), °C 1360
920
Melting Onset (Solidus), °C 1290
710
Specific Heat Capacity, J/kg-K 450
400
Thermal Conductivity, W/m-K 13
200
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.6
Embodied Carbon, kg CO2/kg material 8.1
2.5
Embodied Energy, MJ/kg 110
39
Embodied Water, L/kg 530
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
34
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
48
Stiffness to Weight: Axial, points 15
7.1
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 34 to 45
6.4
Strength to Weight: Bending, points 27 to 32
8.8
Thermal Diffusivity, mm2/s 3.5
56
Thermal Shock Resistance, points 25 to 33
7.9

Alloy Composition


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Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
94.7 to 95.2
Iron (Fe), % 0 to 0.75
0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
4.8 to 5.2
Silicon (Si), % 0 to 1.0
0
Residuals, % 0
0 to 0.15