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CR020A Copper vs. R30001 Cobalt

CR020A copper belongs to the copper alloys classification, while R30001 cobalt belongs to the cobalt alloys. There are 23 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 CR020A copper and the bottom bar is R30001 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 15
1.0
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 43
86
Tensile Strength: Ultimate (UTS), MPa 220
620

Thermal Properties

Latent Heat of Fusion, J/g 210
310
Melting Completion (Liquidus), °C 1090
1530
Melting Onset (Solidus), °C 1040
1260
Specific Heat Capacity, J/kg-K 390
430
Thermal Conductivity, W/m-K 380
15
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 100
1.8

Otherwise Unclassified Properties

Density, g/cm3 9.0
9.0
Embodied Carbon, kg CO2/kg material 2.6
8.9
Embodied Energy, MJ/kg 41
130
Embodied Water, L/kg 320
460

Common Calculations

Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
22
Strength to Weight: Axial, points 6.8
19
Strength to Weight: Bending, points 9.0
18
Thermal Diffusivity, mm2/s 110
3.7
Thermal Shock Resistance, points 7.8
19

Alloy Composition

Bismuth (Bi), % 0 to 0.00050
0
Carbon (C), % 0
2.0 to 3.0
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
43 to 59
Copper (Cu), % 99.95 to 99.999
0
Iron (Fe), % 0
0 to 3.0
Lead (Pb), % 0 to 0.0050
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Phosphorus (P), % 0.0010 to 0.0060
0
Silicon (Si), % 0
0 to 2.0
Silver (Ag), % 0 to 0.015
0
Tungsten (W), % 0
11 to 13