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C82800 Copper vs. R31233 Cobalt

C82800 copper belongs to the copper alloys classification, while R31233 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C82800 copper and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 1.0 to 20
17
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 46
85
Tensile Strength: Ultimate (UTS), MPa 670 to 1140
1020
Tensile Strength: Yield (Proof), MPa 380 to 1000
420

Thermal Properties

Latent Heat of Fusion, J/g 240
320
Melting Completion (Liquidus), °C 930
1350
Melting Onset (Solidus), °C 890
1330
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 17
13

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 8.7
8.6
Embodied Carbon, kg CO2/kg material 12
8.4
Embodied Energy, MJ/kg 190
110
Embodied Water, L/kg 310
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11 to 110
140
Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 4080
410
Stiffness to Weight: Axial, points 7.8
14
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 21 to 36
33
Strength to Weight: Bending, points 20 to 28
26
Thermal Diffusivity, mm2/s 36
3.2
Thermal Shock Resistance, points 23 to 39
25

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Beryllium (Be), % 2.5 to 2.9
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0
0.020 to 0.1
Chromium (Cr), % 0 to 0.1
23.5 to 27.5
Cobalt (Co), % 0.15 to 0.7
44.7 to 63.3
Copper (Cu), % 94.6 to 97.2
0
Iron (Fe), % 0 to 0.25
1.0 to 5.0
Lead (Pb), % 0 to 0.020
0
Manganese (Mn), % 0
0.1 to 1.5
Molybdenum (Mo), % 0
4.0 to 6.0
Nickel (Ni), % 0 to 0.2
7.0 to 11
Nitrogen (N), % 0
0.030 to 0.12
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0.2 to 0.35
0.050 to 1.0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.12
0
Tungsten (W), % 0
1.0 to 3.0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.5
0