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R30012 Cobalt vs. C19020 Copper

R30012 cobalt belongs to the cobalt alloys classification, while C19020 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 R30012 cobalt and the bottom bar is C19020 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 1.0
2.3 to 5.7
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 86
44
Tensile Strength: Ultimate (UTS), MPa 830
440 to 590

Thermal Properties

Latent Heat of Fusion, J/g 320
210
Melting Completion (Liquidus), °C 1470
1090
Melting Onset (Solidus), °C 1280
1030
Specific Heat Capacity, J/kg-K 440
390
Thermal Conductivity, W/m-K 15
190
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
50
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
50

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.9
Embodied Carbon, kg CO2/kg material 8.3
2.8
Embodied Energy, MJ/kg 120
44
Embodied Water, L/kg 480
310

Common Calculations

Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 26
14 to 18
Strength to Weight: Bending, points 22
14 to 18
Thermal Diffusivity, mm2/s 3.8
55
Thermal Shock Resistance, points 23
16 to 21

Alloy Composition


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Carbon (C), % 1.4 to 2.0
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 47.5 to 64.1
0
Copper (Cu), % 0
95.7 to 99.19
Iron (Fe), % 0 to 3.0
0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0.5 to 3.0
Phosphorus (P), % 0
0.010 to 0.2
Silicon (Si), % 0 to 2.0
0
Tin (Sn), % 0
0.3 to 0.9
Tungsten (W), % 7.5 to 9.5
0
Residuals, % 0
0 to 0.2