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C82700 Copper vs. R30003 Cobalt

C82700 copper belongs to the copper alloys classification, while R30003 cobalt belongs to the cobalt alloys. There are 25 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 C82700 copper and the bottom bar is R30003 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210
Elongation at Break, % 1.8
10 to 73
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 46
83
Tensile Strength: Ultimate (UTS), MPa 1200
970 to 1720
Tensile Strength: Yield (Proof), MPa 1020
510 to 1090

Thermal Properties

Latent Heat of Fusion, J/g 240
310
Melting Completion (Liquidus), °C 950
1400
Melting Onset (Solidus), °C 860
1440
Specific Heat Capacity, J/kg-K 380
450
Thermal Conductivity, W/m-K 130
13
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 20
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 21
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.7
8.4
Embodied Carbon, kg CO2/kg material 12
8.0
Embodied Energy, MJ/kg 180
110
Embodied Water, L/kg 310
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 4260
600 to 2790
Stiffness to Weight: Axial, points 7.8
14
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 38
32 to 57
Strength to Weight: Bending, points 29
26 to 38
Thermal Diffusivity, mm2/s 39
3.3
Thermal Shock Resistance, points 41
26 to 45

Alloy Composition

Aluminum (Al), % 0 to 0.15
0
Beryllium (Be), % 2.4 to 2.6
0
Boron (B), % 0
0 to 0.1
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0 to 0.090
19 to 21
Cobalt (Co), % 0
39 to 41
Copper (Cu), % 94.6 to 96.7
0
Iron (Fe), % 0 to 0.25
10 to 20.5
Lead (Pb), % 0 to 0.020
0
Manganese (Mn), % 0
1.5 to 2.5
Molybdenum (Mo), % 0
6.0 to 8.0
Nickel (Ni), % 1.0 to 1.5
14 to 16
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.15
0 to 1.2
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.5
0