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R30012 Cobalt vs. C12000 Copper

R30012 cobalt belongs to the cobalt alloys classification, while C12000 copper belongs to the copper alloys. There are 26 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 R30012 cobalt and the bottom bar is C12000 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 1.0
2.8 to 50
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 86
43
Tensile Strength: Ultimate (UTS), MPa 830
230 to 410
Tensile Strength: Yield (Proof), MPa 650
77 to 400

Thermal Properties

Latent Heat of Fusion, J/g 320
210
Melting Completion (Liquidus), °C 1470
1080
Melting Onset (Solidus), °C 1280
1080
Specific Heat Capacity, J/kg-K 440
390
Thermal Conductivity, W/m-K 15
390
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
98
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
98

Otherwise Unclassified Properties

Density, g/cm3 8.8
9.0
Embodied Carbon, kg CO2/kg material 8.3
2.6
Embodied Energy, MJ/kg 120
41
Embodied Water, L/kg 480
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.7
10 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 960
25 to 690
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 26
7.2 to 13
Strength to Weight: Bending, points 22
9.4 to 14
Thermal Diffusivity, mm2/s 3.8
110
Thermal Shock Resistance, points 23
8.2 to 15

Alloy Composition

Carbon (C), % 1.4 to 2.0
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 47.5 to 64.1
0
Copper (Cu), % 0
99.9 to 99.996
Iron (Fe), % 0 to 3.0
0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Phosphorus (P), % 0
0.0040 to 0.012
Silicon (Si), % 0 to 2.0
0
Tungsten (W), % 7.5 to 9.5
0