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C18400 Copper vs. R30006 Cobalt

C18400 copper belongs to the copper alloys classification, while R30006 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C18400 copper and the bottom bar is R30006 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 13 to 50
1.0
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 44
85
Tensile Strength: Ultimate (UTS), MPa 270 to 490
900
Tensile Strength: Yield (Proof), MPa 110 to 480
540

Thermal Properties

Latent Heat of Fusion, J/g 210
320
Melting Completion (Liquidus), °C 1080
1400
Melting Onset (Solidus), °C 1070
1290
Specific Heat Capacity, J/kg-K 390
450
Thermal Conductivity, W/m-K 320
15
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 80
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 81
1.7

Otherwise Unclassified Properties

Density, g/cm3 8.9
8.6
Embodied Carbon, kg CO2/kg material 2.6
7.8
Embodied Energy, MJ/kg 41
110
Embodied Water, L/kg 310
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63 to 120
7.8
Resilience: Unit (Modulus of Resilience), kJ/m3 54 to 980
670
Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 18
23
Strength to Weight: Axial, points 8.5 to 15
29
Strength to Weight: Bending, points 10 to 16
24
Thermal Diffusivity, mm2/s 94
3.9
Thermal Shock Resistance, points 9.6 to 17
26

Alloy Composition

Arsenic (As), % 0 to 0.0050
0
Calcium (Ca), % 0 to 0.0050
0
Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0.4 to 1.2
27 to 32
Cobalt (Co), % 0
48.6 to 68.1
Copper (Cu), % 97.2 to 99.6
0
Iron (Fe), % 0 to 0.15
0 to 3.0
Lithium (Li), % 0 to 0.050
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0
0 to 3.0
Phosphorus (P), % 0 to 0.050
0
Silicon (Si), % 0 to 0.1
0 to 2.0
Tungsten (W), % 0
4.0 to 6.0
Zinc (Zn), % 0 to 0.7
0
Residuals, % 0 to 0.5
0