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R30006 Cobalt vs. C55181 Copper

R30006 cobalt belongs to the cobalt alloys classification, while C55181 copper belongs to the copper alloys. There are 18 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is C55181 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 85
40
Tensile Strength: Ultimate (UTS), MPa 900
200

Thermal Properties

Latent Heat of Fusion, J/g 320
190
Melting Completion (Liquidus), °C 1400
790
Melting Onset (Solidus), °C 1290
710
Specific Heat Capacity, J/kg-K 450
410
Thermal Expansion, µm/m-K 11
16

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.5
Embodied Carbon, kg CO2/kg material 7.8
2.4
Embodied Energy, MJ/kg 110
38
Embodied Water, L/kg 500
290

Common Calculations

Stiffness to Weight: Axial, points 14
7.0
Stiffness to Weight: Bending, points 23
19
Strength to Weight: Axial, points 29
6.5
Strength to Weight: Bending, points 24
8.9
Thermal Shock Resistance, points 26
8.2

Alloy Composition


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Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
92.4 to 93
Iron (Fe), % 0 to 3.0
0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Phosphorus (P), % 0
7.0 to 7.5
Silicon (Si), % 0 to 2.0
0
Tungsten (W), % 4.0 to 6.0
0
Residuals, % 0
0 to 0.15