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C19800 Copper vs. R30012 Cobalt

C19800 copper belongs to the copper alloys classification, while R30012 cobalt belongs to the cobalt 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 C19800 copper and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 9.0 to 12
1.0
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
86
Tensile Strength: Ultimate (UTS), MPa 430 to 550
830
Tensile Strength: Yield (Proof), MPa 420 to 550
650

Thermal Properties

Latent Heat of Fusion, J/g 210
320
Melting Completion (Liquidus), °C 1070
1470
Melting Onset (Solidus), °C 1050
1280
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 260
15
Thermal Expansion, µm/m-K 18
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 61
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 62
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.9
8.8
Embodied Carbon, kg CO2/kg material 2.8
8.3
Embodied Energy, MJ/kg 43
120
Embodied Water, L/kg 320
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 49 to 52
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 770 to 1320
960
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
23
Strength to Weight: Axial, points 14 to 17
26
Strength to Weight: Bending, points 14 to 17
22
Thermal Diffusivity, mm2/s 75
3.8
Thermal Shock Resistance, points 15 to 20
23

Alloy Composition

Carbon (C), % 0
1.4 to 2.0
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
47.5 to 64.1
Copper (Cu), % 95.7 to 99.47
0
Iron (Fe), % 0.020 to 0.5
0 to 3.0
Magnesium (Mg), % 0.1 to 1.0
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Phosphorus (P), % 0.010 to 0.1
0
Silicon (Si), % 0
0 to 2.0
Tin (Sn), % 0.1 to 1.0
0
Tungsten (W), % 0
7.5 to 9.5
Zinc (Zn), % 0.3 to 1.5
0
Residuals, % 0 to 0.2
0