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R30001 Cobalt vs. C18200 Copper

R30001 cobalt belongs to the cobalt alloys classification, while C18200 copper belongs to the copper alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R30001 cobalt and the bottom bar is C18200 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 1.0
11 to 40
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 86
44
Tensile Strength: Ultimate (UTS), MPa 620
310 to 530

Thermal Properties

Latent Heat of Fusion, J/g 310
210
Melting Completion (Liquidus), °C 1530
1080
Melting Onset (Solidus), °C 1260
1070
Specific Heat Capacity, J/kg-K 430
390
Thermal Conductivity, W/m-K 15
320
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
80
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
81

Otherwise Unclassified Properties

Density, g/cm3 9.0
8.9
Embodied Carbon, kg CO2/kg material 8.9
2.6
Embodied Energy, MJ/kg 130
41
Embodied Water, L/kg 460
310

Common Calculations

Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 22
18
Strength to Weight: Axial, points 19
9.6 to 16
Strength to Weight: Bending, points 18
11 to 16
Thermal Diffusivity, mm2/s 3.7
93
Thermal Shock Resistance, points 19
11 to 18

Alloy Composition

Carbon (C), % 2.0 to 3.0
0
Chromium (Cr), % 28 to 32
0.6 to 1.2
Cobalt (Co), % 43 to 59
0
Copper (Cu), % 0
98.6 to 99.4
Iron (Fe), % 0 to 3.0
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0 to 2.0
0 to 0.1
Tungsten (W), % 11 to 13
0