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R30003 Cobalt vs. C18200 Copper

R30003 cobalt belongs to the cobalt alloys classification, while C18200 copper belongs to the copper alloys. There are 26 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 R30003 cobalt and the bottom bar is C18200 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
120
Elongation at Break, % 10 to 73
11 to 40
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 83
44
Tensile Strength: Ultimate (UTS), MPa 970 to 1720
310 to 530
Tensile Strength: Yield (Proof), MPa 510 to 1090
97 to 450

Thermal Properties

Latent Heat of Fusion, J/g 310
210
Melting Completion (Liquidus), °C 1400
1080
Melting Onset (Solidus), °C 1440
1070
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 13
320
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
80
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
81

Otherwise Unclassified Properties

Base Metal Price, % relative 95
31
Density, g/cm3 8.4
8.9
Embodied Carbon, kg CO2/kg material 8.0
2.6
Embodied Energy, MJ/kg 110
41
Embodied Water, L/kg 400
310

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 600 to 2790
40 to 860
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 32 to 57
9.6 to 16
Strength to Weight: Bending, points 26 to 38
11 to 16
Thermal Diffusivity, mm2/s 3.3
93
Thermal Shock Resistance, points 26 to 45
11 to 18

Alloy Composition

Boron (B), % 0 to 0.1
0
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 19 to 21
0.6 to 1.2
Cobalt (Co), % 39 to 41
0
Copper (Cu), % 0
98.6 to 99.4
Iron (Fe), % 10 to 20.5
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 1.5 to 2.5
0
Molybdenum (Mo), % 6.0 to 8.0
0
Nickel (Ni), % 14 to 16
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 1.2
0 to 0.1
Sulfur (S), % 0 to 0.015
0