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C99300 Copper vs. R30816 Cobalt

C99300 copper belongs to the copper alloys classification, while R30816 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 C99300 copper and the bottom bar is R30816 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
280
Elastic (Young's, Tensile) Modulus, GPa 120
210
Elongation at Break, % 2.0
23
Poisson's Ratio 0.33
0.3
Shear Modulus, GPa 46
81
Tensile Strength: Ultimate (UTS), MPa 660
1020
Tensile Strength: Yield (Proof), MPa 380
460

Thermal Properties

Latent Heat of Fusion, J/g 240
300
Melting Completion (Liquidus), °C 1080
1540
Melting Onset (Solidus), °C 1070
1460
Specific Heat Capacity, J/kg-K 450
420
Thermal Conductivity, W/m-K 43
13
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Density, g/cm3 8.2
9.1
Embodied Carbon, kg CO2/kg material 4.5
20
Embodied Energy, MJ/kg 70
320
Embodied Water, L/kg 400
440

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
190
Resilience: Unit (Modulus of Resilience), kJ/m3 590
510
Stiffness to Weight: Axial, points 8.3
13
Stiffness to Weight: Bending, points 20
22
Strength to Weight: Axial, points 22
31
Strength to Weight: Bending, points 20
25
Thermal Diffusivity, mm2/s 12
3.3
Thermal Shock Resistance, points 22
28

Alloy Composition

Aluminum (Al), % 10.7 to 11.5
0
Carbon (C), % 0
0.32 to 0.42
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 1.0 to 2.0
40 to 49.8
Copper (Cu), % 68.6 to 74.4
0
Iron (Fe), % 0.4 to 1.0
0 to 5.0
Lead (Pb), % 0 to 0.020
0
Manganese (Mn), % 0
1.0 to 2.0
Molybdenum (Mo), % 0
3.5 to 4.5
Nickel (Ni), % 13.5 to 16.5
19 to 21
Niobium (Nb), % 0
3.5 to 4.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.020
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 0
3.5 to 4.5
Tin (Sn), % 0 to 0.050
0
Tungsten (W), % 0
3.5 to 4.5
Residuals, % 0 to 0.3
0