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CR018A Copper vs. R30003 Cobalt

CR018A copper belongs to the copper alloys classification, while R30003 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is CR018A 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, % 15
10 to 73
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
83
Tensile Strength: Ultimate (UTS), MPa 220
970 to 1720
Tensile Strength: Yield (Proof), MPa 130
510 to 1090

Thermal Properties

Latent Heat of Fusion, J/g 210
310
Melting Completion (Liquidus), °C 1090
1400
Melting Onset (Solidus), °C 1040
1440
Specific Heat Capacity, J/kg-K 390
450
Thermal Conductivity, W/m-K 390
13
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 100
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 33
95
Density, g/cm3 9.0
8.4
Embodied Carbon, kg CO2/kg material 2.7
8.0
Embodied Energy, MJ/kg 42
110
Embodied Water, L/kg 360
400

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 76
600 to 2790
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 6.8
32 to 57
Strength to Weight: Bending, points 9.0
26 to 38
Thermal Diffusivity, mm2/s 110
3.3
Thermal Shock Resistance, points 7.8
26 to 45

Alloy Composition

Bismuth (Bi), % 0 to 0.00050
0
Boron (B), % 0
0 to 0.1
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
39 to 41
Copper (Cu), % 99.914 to 99.94
0
Iron (Fe), % 0
10 to 20.5
Manganese (Mn), % 0
1.5 to 2.5
Molybdenum (Mo), % 0
6.0 to 8.0
Nickel (Ni), % 0
14 to 16
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 1.2
Silver (Ag), % 0.060 to 0.080
0
Sulfur (S), % 0
0 to 0.015