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C17510 Copper vs. R30021 Cobalt

C17510 copper belongs to the copper alloys classification, while R30021 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C17510 copper and the bottom bar is R30021 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 5.4 to 37
9.0
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 44
86
Tensile Strength: Ultimate (UTS), MPa 310 to 860
700
Tensile Strength: Yield (Proof), MPa 120 to 750
500

Thermal Properties

Latent Heat of Fusion, J/g 220
330
Melting Completion (Liquidus), °C 1070
1350
Melting Onset (Solidus), °C 1030
1190
Specific Heat Capacity, J/kg-K 390
450
Thermal Conductivity, W/m-K 210
15
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22 to 54
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 23 to 54
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.9
8.4
Embodied Carbon, kg CO2/kg material 4.2
8.0
Embodied Energy, MJ/kg 65
110
Embodied Water, L/kg 310
520

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 39 to 92
57
Resilience: Unit (Modulus of Resilience), kJ/m3 64 to 2410
570
Stiffness to Weight: Axial, points 7.4
15
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 9.7 to 27
23
Strength to Weight: Bending, points 11 to 23
21
Thermal Diffusivity, mm2/s 60
3.8
Thermal Shock Resistance, points 11 to 30
21

Alloy Composition

Aluminum (Al), % 0 to 0.2
0
Beryllium (Be), % 0.2 to 0.6
0
Carbon (C), % 0
0.2 to 0.35
Chromium (Cr), % 0
26 to 29
Cobalt (Co), % 0 to 0.3
61.7 to 67.3
Copper (Cu), % 95.9 to 98.4
0
Iron (Fe), % 0 to 0.1
0 to 3.0
Molybdenum (Mo), % 0
4.5 to 6.0
Nickel (Ni), % 1.4 to 2.2
2.0 to 3.0
Silicon (Si), % 0 to 0.2
0 to 1.5
Residuals, % 0 to 0.5
0