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R30006 Cobalt vs. C18100 Copper

R30006 cobalt belongs to the cobalt alloys classification, while C18100 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 R30006 cobalt and the bottom bar is C18100 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 1.0
8.3
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 85
47
Tensile Strength: Ultimate (UTS), MPa 900
510
Tensile Strength: Yield (Proof), MPa 540
460

Thermal Properties

Latent Heat of Fusion, J/g 320
210
Melting Completion (Liquidus), °C 1400
1080
Melting Onset (Solidus), °C 1290
1020
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 15
320
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
80
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
81

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.9
Embodied Carbon, kg CO2/kg material 7.8
2.7
Embodied Energy, MJ/kg 110
43
Embodied Water, L/kg 500
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
40
Resilience: Unit (Modulus of Resilience), kJ/m3 670
900
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 29
16
Strength to Weight: Bending, points 24
16
Thermal Diffusivity, mm2/s 3.9
94
Thermal Shock Resistance, points 26
18

Alloy Composition


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Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 27 to 32
0.4 to 1.2
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
98.7 to 99.49
Iron (Fe), % 0 to 3.0
0
Magnesium (Mg), % 0
0.030 to 0.060
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Silicon (Si), % 0 to 2.0
0
Tungsten (W), % 4.0 to 6.0
0
Zirconium (Zr), % 0
0.080 to 0.2
Residuals, % 0
0 to 0.5