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R31538 Cobalt vs. C82400 Copper

R31538 cobalt belongs to the cobalt alloys classification, while C82400 copper belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R31538 cobalt and the bottom bar is C82400 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 13 to 23
1.0 to 20
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 86
45
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
500 to 1030
Tensile Strength: Yield (Proof), MPa 580 to 930
260 to 970

Thermal Properties

Latent Heat of Fusion, J/g 320
230
Melting Completion (Liquidus), °C 1360
1000
Melting Onset (Solidus), °C 1290
900
Specific Heat Capacity, J/kg-K 450
380
Thermal Conductivity, W/m-K 13
130
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
26

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.8
Embodied Carbon, kg CO2/kg material 8.1
8.9
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 530
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
10 to 83
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
270 to 3870
Stiffness to Weight: Axial, points 15
7.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 34 to 45
16 to 33
Strength to Weight: Bending, points 27 to 32
16 to 26
Thermal Diffusivity, mm2/s 3.5
39
Thermal Shock Resistance, points 25 to 33
17 to 36

Alloy Composition

Aluminum (Al), % 0
0 to 0.15
Beryllium (Be), % 0
1.6 to 1.9
Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0 to 0.1
Cobalt (Co), % 58.7 to 68.9
0.2 to 0.65
Copper (Cu), % 0
96 to 98.2
Iron (Fe), % 0 to 0.75
0 to 0.2
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
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.12
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.5