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C64800 Bronze vs. R30016 Cobalt

C64800 bronze belongs to the copper alloys classification, while R30016 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is C64800 bronze and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 8.0
8.4
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 44
85
Tensile Strength: Ultimate (UTS), MPa 640
1010
Tensile Strength: Yield (Proof), MPa 630
580

Thermal Properties

Latent Heat of Fusion, J/g 220
320
Melting Completion (Liquidus), °C 1090
1360
Melting Onset (Solidus), °C 1030
1270
Specific Heat Capacity, J/kg-K 390
450
Thermal Conductivity, W/m-K 260
15
Thermal Expansion, µm/m-K 17
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 65
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 66
2.0

Otherwise Unclassified Properties

Density, g/cm3 8.9
8.5
Embodied Carbon, kg CO2/kg material 2.7
7.7
Embodied Energy, MJ/kg 43
110
Embodied Water, L/kg 310
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
72
Resilience: Unit (Modulus of Resilience), kJ/m3 1680
770
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 20
33
Strength to Weight: Bending, points 19
26
Thermal Diffusivity, mm2/s 75
3.9
Thermal Shock Resistance, points 23
24

Alloy Composition

Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0 to 0.090
28 to 32
Cobalt (Co), % 1.0 to 3.0
49.6 to 66.9
Copper (Cu), % 92.4 to 98.8
0
Iron (Fe), % 0 to 1.0
0 to 3.0
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0 to 0.5
0 to 3.0
Phosphorus (P), % 0 to 0.5
0
Silicon (Si), % 0.2 to 1.0
0.2 to 2.0
Tin (Sn), % 0 to 0.5
0
Tungsten (W), % 0
3.5 to 5.5
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.5
0