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R31538 Cobalt vs. C82800 Copper

R31538 cobalt belongs to the cobalt alloys classification, while C82800 copper belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R31538 cobalt and the bottom bar is C82800 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
46
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
670 to 1140
Tensile Strength: Yield (Proof), MPa 580 to 930
380 to 1000

Thermal Properties

Latent Heat of Fusion, J/g 320
240
Melting Completion (Liquidus), °C 1360
930
Melting Onset (Solidus), °C 1290
890
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 13
120
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
18
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
19

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.7
Embodied Carbon, kg CO2/kg material 8.1
12
Embodied Energy, MJ/kg 110
190
Embodied Water, L/kg 530
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
11 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
590 to 4080
Stiffness to Weight: Axial, points 15
7.8
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 34 to 45
21 to 36
Strength to Weight: Bending, points 27 to 32
20 to 28
Thermal Diffusivity, mm2/s 3.5
36
Thermal Shock Resistance, points 25 to 33
23 to 39

Alloy Composition


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Aluminum (Al), % 0
0 to 0.15
Beryllium (Be), % 0
2.5 to 2.9
Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0 to 0.1
Cobalt (Co), % 58.7 to 68.9
0.15 to 0.7
Copper (Cu), % 0
94.6 to 97.2
Iron (Fe), % 0 to 0.75
0 to 0.25
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
0.2 to 0.35
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