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C19800 Copper vs. R30816 Cobalt

C19800 copper belongs to the copper alloys classification, while R30816 cobalt belongs to the cobalt alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C19800 copper and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 9.0 to 12
23
Poisson's Ratio 0.34
0.3
Shear Modulus, GPa 43
81
Tensile Strength: Ultimate (UTS), MPa 430 to 550
1020
Tensile Strength: Yield (Proof), MPa 420 to 550
460

Thermal Properties

Latent Heat of Fusion, J/g 210
300
Melting Completion (Liquidus), °C 1070
1540
Melting Onset (Solidus), °C 1050
1460
Specific Heat Capacity, J/kg-K 390
420
Thermal Conductivity, W/m-K 260
13
Thermal Expansion, µm/m-K 18
12

Otherwise Unclassified Properties

Density, g/cm3 8.9
9.1
Embodied Carbon, kg CO2/kg material 2.8
20
Embodied Energy, MJ/kg 43
320
Embodied Water, L/kg 320
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 49 to 52
190
Resilience: Unit (Modulus of Resilience), kJ/m3 770 to 1320
510
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 18
22
Strength to Weight: Axial, points 14 to 17
31
Strength to Weight: Bending, points 14 to 17
25
Thermal Diffusivity, mm2/s 75
3.3
Thermal Shock Resistance, points 15 to 20
28

Alloy Composition

Carbon (C), % 0
0.32 to 0.42
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
40 to 49.8
Copper (Cu), % 95.7 to 99.47
0
Iron (Fe), % 0.020 to 0.5
0 to 5.0
Magnesium (Mg), % 0.1 to 1.0
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), % 0.010 to 0.1
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tin (Sn), % 0.1 to 1.0
0
Tungsten (W), % 0
3.5 to 4.5
Zinc (Zn), % 0.3 to 1.5
0
Residuals, % 0 to 0.2
0