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C15900 Copper vs. R31538 Cobalt

C15900 copper belongs to the copper alloys classification, while R31538 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C15900 copper and the bottom bar is R31538 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 6.5
13 to 23
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
86
Tensile Strength: Ultimate (UTS), MPa 720
1020 to 1360
Tensile Strength: Yield (Proof), MPa 240
580 to 930

Thermal Properties

Latent Heat of Fusion, J/g 210
320
Melting Completion (Liquidus), °C 1080
1360
Melting Onset (Solidus), °C 1030
1290
Specific Heat Capacity, J/kg-K 390
450
Thermal Conductivity, W/m-K 280
13
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 48
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 49
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.4
Embodied Carbon, kg CO2/kg material 2.8
8.1
Embodied Energy, MJ/kg 45
110
Embodied Water, L/kg 310
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
140 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 260
750 to 1920
Stiffness to Weight: Axial, points 7.2
15
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 23
34 to 45
Strength to Weight: Bending, points 20
27 to 32
Thermal Diffusivity, mm2/s 80
3.5
Thermal Shock Resistance, points 26
25 to 33

Alloy Composition

Aluminum (Al), % 0.76 to 0.84
0
Carbon (C), % 0.27 to 0.33
0.15 to 0.35
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
58.7 to 68.9
Copper (Cu), % 97.5 to 97.9
0
Iron (Fe), % 0 to 0.040
0 to 0.75
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Oxygen (O), % 0.4 to 0.54
0
Silicon (Si), % 0
0 to 1.0
Titanium (Ti), % 0.66 to 0.74
0