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C17500 Copper vs. R30605 Cobalt

C17500 copper belongs to the copper alloys classification, while R30605 cobalt belongs to the cobalt alloys. There are 25 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 C17500 copper and the bottom bar is R30605 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
210
Elongation at Break, % 6.0 to 30
34
Fatigue Strength, MPa 170 to 310
260 to 590
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 45
81
Tensile Strength: Ultimate (UTS), MPa 310 to 860
1130 to 1900
Tensile Strength: Yield (Proof), MPa 170 to 760
470 to 1600

Thermal Properties

Latent Heat of Fusion, J/g 220
290
Melting Completion (Liquidus), °C 1060
1410
Melting Onset (Solidus), °C 1020
1330
Specific Heat Capacity, J/kg-K 390
410
Thermal Conductivity, W/m-K 200
9.6
Thermal Expansion, µm/m-K 18
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24 to 53
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 24 to 54
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.9
9.6
Embodied Carbon, kg CO2/kg material 4.7
9.8
Embodied Energy, MJ/kg 73
140
Embodied Water, L/kg 320
450

Common Calculations

Stiffness to Weight: Axial, points 7.5
12
Stiffness to Weight: Bending, points 18
21
Strength to Weight: Axial, points 9.7 to 27
33 to 55
Strength to Weight: Bending, points 11 to 23
25 to 36
Thermal Diffusivity, mm2/s 59
2.5
Thermal Shock Resistance, points 11 to 29
31 to 52

Alloy Composition

Aluminum (Al), % 0 to 0.2
0
Beryllium (Be), % 0.4 to 0.7
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 2.4 to 2.7
46.4 to 57
Copper (Cu), % 95.6 to 97.2
0
Iron (Fe), % 0 to 0.1
0 to 3.0
Manganese (Mn), % 0
1.0 to 2.0
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 0.4
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
14 to 16
Residuals, % 0 to 0.5
0