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C31400 Bronze vs. R30016 Cobalt

C31400 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 C31400 bronze and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 6.8 to 29
8.4
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 42
85
Tensile Strength: Ultimate (UTS), MPa 270 to 420
1010
Tensile Strength: Yield (Proof), MPa 78 to 310
580

Thermal Properties

Latent Heat of Fusion, J/g 200
320
Melting Completion (Liquidus), °C 1040
1360
Melting Onset (Solidus), °C 1010
1270
Specific Heat Capacity, J/kg-K 380
450
Thermal Conductivity, W/m-K 180
15
Thermal Expansion, µm/m-K 18
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 43
2.0

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.5
Embodied Carbon, kg CO2/kg material 2.6
7.7
Embodied Energy, MJ/kg 42
110
Embodied Water, L/kg 310
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 59
72
Resilience: Unit (Modulus of Resilience), kJ/m3 28 to 420
770
Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 8.7 to 13
33
Strength to Weight: Bending, points 11 to 14
26
Thermal Diffusivity, mm2/s 54
3.9
Thermal Shock Resistance, points 9.6 to 15
24

Alloy Composition

Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
49.6 to 66.9
Copper (Cu), % 87.5 to 90.5
0
Iron (Fe), % 0 to 0.1
0 to 3.0
Lead (Pb), % 1.3 to 2.5
0
Manganese (Mn), % 0
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0 to 0.7
0 to 3.0
Silicon (Si), % 0
0.2 to 2.0
Tungsten (W), % 0
3.5 to 5.5
Zinc (Zn), % 5.8 to 11.2
0
Residuals, % 0 to 0.4
0