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CR012A Copper vs. R30035 Cobalt

CR012A copper belongs to the copper alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 27 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 CR012A copper and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220 to 230
Elongation at Break, % 15
9.0 to 46
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
84 to 89
Tensile Strength: Ultimate (UTS), MPa 220
900 to 1900
Tensile Strength: Yield (Proof), MPa 130
300 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 210
320
Melting Completion (Liquidus), °C 1090
1440
Melting Onset (Solidus), °C 1040
1320
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 390
11
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 100
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 33
100
Density, g/cm3 9.0
8.7
Embodied Carbon, kg CO2/kg material 2.7
10
Embodied Energy, MJ/kg 42
140
Embodied Water, L/kg 360
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29
160 to 320
Resilience: Unit (Modulus of Resilience), kJ/m3 76
210 to 5920
Stiffness to Weight: Axial, points 7.2
14 to 15
Stiffness to Weight: Bending, points 18
23 to 24
Strength to Weight: Axial, points 6.8
29 to 61
Strength to Weight: Bending, points 9.0
24 to 39
Thermal Diffusivity, mm2/s 110
3.0
Thermal Shock Resistance, points 7.8
23 to 46

Alloy Composition

Bismuth (Bi), % 0 to 0.00050
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0
0 to 0.025
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
29.1 to 39
Copper (Cu), % 99.85 to 99.94
0
Iron (Fe), % 0
0 to 1.0
Manganese (Mn), % 0
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0
33 to 37
Oxygen (O), % 0 to 0.040
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.15
Silver (Ag), % 0.060 to 0.080
0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 1.0