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R31538 Cobalt vs. C19020 Copper

R31538 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 R31538 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, % 13 to 23
2.3 to 5.7
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 86
44
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
440 to 590

Thermal Properties

Latent Heat of Fusion, J/g 320
210
Melting Completion (Liquidus), °C 1360
1090
Melting Onset (Solidus), °C 1290
1030
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 13
190
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
50
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
50

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 8.1
2.8
Embodied Energy, MJ/kg 110
44
Embodied Water, L/kg 530
310

Common Calculations

Stiffness to Weight: Axial, points 15
7.2
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 34 to 45
14 to 18
Strength to Weight: Bending, points 27 to 32
14 to 18
Thermal Diffusivity, mm2/s 3.5
55
Thermal Shock Resistance, points 25 to 33
16 to 21

Alloy Composition


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Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
95.7 to 99.19
Iron (Fe), % 0 to 0.75
0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0.5 to 3.0
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0
0.010 to 0.2
Silicon (Si), % 0 to 1.0
0
Tin (Sn), % 0
0.3 to 0.9
Residuals, % 0
0 to 0.2