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R31538 Cobalt vs. C82000 Copper

R31538 cobalt belongs to the cobalt alloys classification, while C82000 copper belongs to the copper 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 R31538 cobalt and the bottom bar is C82000 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 13 to 23
8.0 to 20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 86
45
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
350 to 690
Tensile Strength: Yield (Proof), MPa 580 to 930
140 to 520

Thermal Properties

Latent Heat of Fusion, J/g 320
220
Melting Completion (Liquidus), °C 1360
1090
Melting Onset (Solidus), °C 1290
970
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 13
260
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
45
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
46

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 8.1
5.0
Embodied Energy, MJ/kg 110
77
Embodied Water, L/kg 530
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
51 to 55
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
80 to 1120
Stiffness to Weight: Axial, points 15
7.5
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 34 to 45
11 to 22
Strength to Weight: Bending, points 27 to 32
12 to 20
Thermal Diffusivity, mm2/s 3.5
76
Thermal Shock Resistance, points 25 to 33
12 to 24

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Beryllium (Be), % 0
0.45 to 0.8
Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0 to 0.1
Cobalt (Co), % 58.7 to 68.9
2.2 to 2.7
Copper (Cu), % 0
95.2 to 97.4
Iron (Fe), % 0 to 0.75
0 to 0.1
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0 to 0.2
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0 to 0.15
Tin (Sn), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.5