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C55284 Copper vs. R30816 Cobalt

C55284 copper belongs to the copper alloys classification, while R30816 cobalt belongs to the cobalt alloys. There are 17 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is C55284 copper and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
210
Poisson's Ratio 0.34
0.3
Shear Modulus, GPa 38
81
Tensile Strength: Ultimate (UTS), MPa 180
1020

Thermal Properties

Latent Heat of Fusion, J/g 180
300
Melting Completion (Liquidus), °C 800
1540
Melting Onset (Solidus), °C 640
1460
Specific Heat Capacity, J/kg-K 380
420
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Density, g/cm3 8.9
9.1
Embodied Carbon, kg CO2/kg material 16
20
Embodied Energy, MJ/kg 260
320

Common Calculations

Stiffness to Weight: Axial, points 6.5
13
Stiffness to Weight: Bending, points 18
22
Strength to Weight: Axial, points 5.6
31
Strength to Weight: Bending, points 8.0
25
Thermal Shock Resistance, points 7.4
28

Alloy Composition


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Carbon (C), % 0
0.32 to 0.42
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
40 to 49.8
Copper (Cu), % 79.2 to 80.7
0
Iron (Fe), % 0
0 to 5.0
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
3.5 to 4.5
Nickel (Ni), % 0
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 4.8 to 5.2
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 14.5 to 15.5
0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tungsten (W), % 0
3.5 to 4.5
Residuals, % 0 to 0.15
0