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R30605 Cobalt vs. C18600 Copper

R30605 cobalt belongs to the cobalt alloys classification, while C18600 copper belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is C18600 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
120
Elongation at Break, % 34
8.0 to 11
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 81
44
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
520 to 580
Tensile Strength: Yield (Proof), MPa 470 to 1600
500 to 520

Thermal Properties

Latent Heat of Fusion, J/g 290
210
Melting Completion (Liquidus), °C 1410
1090
Melting Onset (Solidus), °C 1330
1070
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 9.6
280
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
70
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
71

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.9
Embodied Carbon, kg CO2/kg material 9.8
2.9
Embodied Energy, MJ/kg 140
46
Embodied Water, L/kg 450
310

Common Calculations

Stiffness to Weight: Axial, points 12
7.3
Stiffness to Weight: Bending, points 21
18
Strength to Weight: Axial, points 33 to 55
16 to 18
Strength to Weight: Bending, points 25 to 36
16 to 17
Thermal Diffusivity, mm2/s 2.5
81
Thermal Shock Resistance, points 31 to 52
19 to 20

Alloy Composition


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Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0.1 to 1.0
Cobalt (Co), % 46.4 to 57
0 to 0.1
Copper (Cu), % 0
96.5 to 99.55
Iron (Fe), % 0 to 3.0
0.25 to 0.8
Manganese (Mn), % 1.0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0 to 0.25
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0.050 to 0.5
Tungsten (W), % 14 to 16
0
Zirconium (Zr), % 0
0.050 to 0.4
Residuals, % 0
0 to 0.5