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R30006 Cobalt vs. C82000 Copper

R30006 cobalt belongs to the cobalt alloys classification, while C82000 copper belongs to the copper 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 R30006 cobalt and the bottom bar is C82000 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 1.0
8.0 to 20
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 85
45
Tensile Strength: Ultimate (UTS), MPa 900
350 to 690
Tensile Strength: Yield (Proof), MPa 540
140 to 520

Thermal Properties

Latent Heat of Fusion, J/g 320
220
Melting Completion (Liquidus), °C 1400
1090
Melting Onset (Solidus), °C 1290
970
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 15
260
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
45
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
46

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.9
Embodied Carbon, kg CO2/kg material 7.8
5.0
Embodied Energy, MJ/kg 110
77
Embodied Water, L/kg 500
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
51 to 55
Resilience: Unit (Modulus of Resilience), kJ/m3 670
80 to 1120
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 29
11 to 22
Strength to Weight: Bending, points 24
12 to 20
Thermal Diffusivity, mm2/s 3.9
76
Thermal Shock Resistance, points 26
12 to 24

Alloy Composition


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Aluminum (Al), % 0
0 to 0.1
Beryllium (Be), % 0
0.45 to 0.8
Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 27 to 32
0 to 0.1
Cobalt (Co), % 48.6 to 68.1
2.2 to 2.7
Copper (Cu), % 0
95.2 to 97.4
Iron (Fe), % 0 to 3.0
0 to 0.1
Lead (Pb), % 0
0 to 0.020
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0 to 0.2
Silicon (Si), % 0 to 2.0
0 to 0.15
Tin (Sn), % 0
0 to 0.1
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.5