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R30012 Cobalt vs. C18200 Copper

R30012 cobalt belongs to the cobalt alloys classification, while C18200 copper belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R30012 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 830
310 to 530
Tensile Strength: Yield (Proof), MPa 650
97 to 450

Thermal Properties

Latent Heat of Fusion, J/g 320
210
Melting Completion (Liquidus), °C 1470
1080
Melting Onset (Solidus), °C 1280
1070
Specific Heat Capacity, J/kg-K 440
390
Thermal Conductivity, W/m-K 15
320
Thermal Expansion, µm/m-K 12
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 8.8
8.9
Embodied Carbon, kg CO2/kg material 8.3
2.6
Embodied Energy, MJ/kg 120
41
Embodied Water, L/kg 480
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
43 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 960
40 to 860
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 26
9.6 to 16
Strength to Weight: Bending, points 22
11 to 16
Thermal Diffusivity, mm2/s 3.8
93
Thermal Shock Resistance, points 23
11 to 18

Alloy Composition

Carbon (C), % 1.4 to 2.0
0
Chromium (Cr), % 27 to 32
0.6 to 1.2
Cobalt (Co), % 47.5 to 64.1
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), % 7.5 to 9.5
0