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C14700 Copper vs. R30008 Cobalt

C14700 copper belongs to the copper alloys classification, while R30008 cobalt belongs to the cobalt alloys. There are 22 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 C14700 copper and the bottom bar is R30008 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210
Elongation at Break, % 9.1 to 35
1.1 to 73
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
83
Tensile Strength: Ultimate (UTS), MPa 240 to 320
950 to 1700
Tensile Strength: Yield (Proof), MPa 85 to 250
500 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 210
320
Melting Completion (Liquidus), °C 1080
1400
Melting Onset (Solidus), °C 1070
1330
Specific Heat Capacity, J/kg-K 390
450
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 30
95
Density, g/cm3 8.9
8.4
Embodied Carbon, kg CO2/kg material 2.6
8.1
Embodied Energy, MJ/kg 41
110
Embodied Water, L/kg 310
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 31 to 280
590 to 2720
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 7.3 to 10
31 to 56
Strength to Weight: Bending, points 9.5 to 12
25 to 37
Thermal Shock Resistance, points 8.4 to 12
25 to 44

Alloy Composition

Boron (B), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
18.5 to 21.5
Cobalt (Co), % 0
39 to 42
Copper (Cu), % 99.395 to 99.798
0
Iron (Fe), % 0
7.6 to 20
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
6.5 to 7.5
Nickel (Ni), % 0
15 to 18
Phosphorus (P), % 0.0020 to 0.0050
0 to 0.015
Silicon (Si), % 0
0 to 1.2
Sulfur (S), % 0.2 to 0.5
0 to 0.015
Residuals, % 0 to 0.1
0