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CR008A Copper vs. R30075 Cobalt

CR008A copper belongs to the copper alloys classification, while R30075 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is CR008A copper and the bottom bar is R30075 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210 to 250
Elongation at Break, % 15
12
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
82 to 98
Tensile Strength: Ultimate (UTS), MPa 220
780 to 1280
Tensile Strength: Yield (Proof), MPa 130
480 to 840

Thermal Properties

Latent Heat of Fusion, J/g 210
320
Melting Completion (Liquidus), °C 1090
1360
Melting Onset (Solidus), °C 1040
1290
Specific Heat Capacity, J/kg-K 390
450
Thermal Conductivity, W/m-K 380
13
Thermal Expansion, µm/m-K 17
12

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 9.0
8.4
Embodied Carbon, kg CO2/kg material 2.6
8.1
Embodied Energy, MJ/kg 41
110
Embodied Water, L/kg 320
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
84 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 76
560 to 1410
Stiffness to Weight: Axial, points 7.2
14 to 17
Stiffness to Weight: Bending, points 18
24 to 25
Strength to Weight: Axial, points 6.8
26 to 42
Strength to Weight: Bending, points 9.0
22 to 31
Thermal Diffusivity, mm2/s 110
3.5
Thermal Shock Resistance, points 7.8
21 to 29

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Bismuth (Bi), % 0 to 0.00050
0
Boron (B), % 0
0 to 0.010
Carbon (C), % 0
0 to 0.35
Chromium (Cr), % 0
27 to 30
Cobalt (Co), % 0
58.7 to 68
Copper (Cu), % 99.95 to 100
0
Iron (Fe), % 0
0 to 0.75
Lead (Pb), % 0 to 0.0050
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 0 to 0.015
0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 0.1
Tungsten (W), % 0
0 to 0.2