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C55181 Copper vs. R30155 Cobalt

C55181 copper belongs to the copper alloys classification, while R30155 cobalt belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is C55181 copper and the bottom bar is R30155 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 40
81
Tensile Strength: Ultimate (UTS), MPa 200
850

Thermal Properties

Latent Heat of Fusion, J/g 190
300
Maximum Temperature: Mechanical, °C 200
1100
Melting Completion (Liquidus), °C 790
1470
Melting Onset (Solidus), °C 710
1420
Specific Heat Capacity, J/kg-K 410
450
Thermal Expansion, µm/m-K 16
14

Otherwise Unclassified Properties

Base Metal Price, % relative 28
80
Density, g/cm3 8.5
8.5
Embodied Carbon, kg CO2/kg material 2.4
9.7
Embodied Energy, MJ/kg 38
150
Embodied Water, L/kg 290
300

Common Calculations

Stiffness to Weight: Axial, points 7.0
14
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 6.5
28
Strength to Weight: Bending, points 8.9
24
Thermal Shock Resistance, points 8.2
21

Alloy Composition

Carbon (C), % 0
0.080 to 0.16
Chromium (Cr), % 0
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 92.4 to 93
0
Iron (Fe), % 0
24.3 to 36.2
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 7.0 to 7.5
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
0.75 to 1.3
Tungsten (W), % 0
2.0 to 3.0
Residuals, % 0 to 0.15
0