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R30605 Cobalt vs. C82500 Copper

R30605 cobalt belongs to the cobalt alloys classification, while C82500 copper belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is C82500 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
120
Elongation at Break, % 34
1.0 to 20
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 81
45
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
550 to 1100
Tensile Strength: Yield (Proof), MPa 470 to 1600
310 to 980

Thermal Properties

Latent Heat of Fusion, J/g 290
240
Melting Completion (Liquidus), °C 1410
980
Melting Onset (Solidus), °C 1330
860
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 9.6
130
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
20
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
21

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.8
Embodied Carbon, kg CO2/kg material 9.8
10
Embodied Energy, MJ/kg 140
160
Embodied Water, L/kg 450
310

Common Calculations

Stiffness to Weight: Axial, points 12
7.7
Stiffness to Weight: Bending, points 21
19
Strength to Weight: Axial, points 33 to 55
18 to 35
Strength to Weight: Bending, points 25 to 36
17 to 27
Thermal Diffusivity, mm2/s 2.5
38
Thermal Shock Resistance, points 31 to 52
19 to 38

Alloy Composition


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Aluminum (Al), % 0
0 to 0.15
Beryllium (Be), % 0
1.9 to 2.3
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0 to 0.1
Cobalt (Co), % 46.4 to 57
0.15 to 0.7
Copper (Cu), % 0
95.3 to 97.8
Iron (Fe), % 0 to 3.0
0 to 0.25
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 1.0 to 2.0
0
Nickel (Ni), % 9.0 to 11
0 to 0.2
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.4
0.2 to 0.35
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.12
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.5