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C12900 Copper vs. R31233 Cobalt

C12900 copper belongs to the copper alloys classification, while R31233 cobalt belongs to the cobalt 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 C12900 copper and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 2.8 to 50
17
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
85
Tensile Strength: Ultimate (UTS), MPa 220 to 420
1020
Tensile Strength: Yield (Proof), MPa 75 to 380
420

Thermal Properties

Latent Heat of Fusion, J/g 210
320
Melting Completion (Liquidus), °C 1080
1350
Melting Onset (Solidus), °C 1030
1330
Specific Heat Capacity, J/kg-K 390
440
Thermal Conductivity, W/m-K 380
12
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 98
2.1

Otherwise Unclassified Properties

Density, g/cm3 9.0
8.6
Embodied Carbon, kg CO2/kg material 2.6
8.4
Embodied Energy, MJ/kg 41
110
Embodied Water, L/kg 330
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11 to 88
140
Resilience: Unit (Modulus of Resilience), kJ/m3 24 to 640
410
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 18
23
Strength to Weight: Axial, points 6.8 to 13
33
Strength to Weight: Bending, points 9.1 to 14
26
Thermal Diffusivity, mm2/s 110
3.2
Thermal Shock Resistance, points 7.8 to 15
25

Alloy Composition

Antimony (Sb), % 0 to 0.0030
0
Arsenic (As), % 0 to 0.012
0
Bismuth (Bi), % 0 to 0.0030
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0
0.020 to 0.1
Chromium (Cr), % 0
23.5 to 27.5
Cobalt (Co), % 0
44.7 to 63.3
Copper (Cu), % 99.88 to 100
0
Iron (Fe), % 0
1.0 to 5.0
Lead (Pb), % 0 to 0.0040
0
Manganese (Mn), % 0
0.1 to 1.5
Molybdenum (Mo), % 0
4.0 to 6.0
Nickel (Ni), % 0 to 0.050
7.0 to 11
Nitrogen (N), % 0
0.030 to 0.12
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.050 to 1.0
Silver (Ag), % 0 to 0.054
0
Sulfur (S), % 0
0 to 0.020
Tellurium (Te), % 0 to 0.025
0
Tungsten (W), % 0
1.0 to 3.0