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C87700 Bronze vs. R30016 Cobalt

C87700 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 (8, in this case) are not shown.

For each property being compared, the top bar is C87700 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, % 3.6
8.4
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 42
85
Tensile Strength: Ultimate (UTS), MPa 300
1010
Tensile Strength: Yield (Proof), MPa 120
580

Thermal Properties

Latent Heat of Fusion, J/g 250
320
Melting Completion (Liquidus), °C 980
1360
Melting Onset (Solidus), °C 900
1270
Specific Heat Capacity, J/kg-K 400
450
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 18
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 48
2.0

Otherwise Unclassified Properties

Density, g/cm3 8.5
8.5
Embodied Carbon, kg CO2/kg material 2.7
7.7
Embodied Energy, MJ/kg 45
110
Embodied Water, L/kg 310
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.6
72
Resilience: Unit (Modulus of Resilience), kJ/m3 64
770
Stiffness to Weight: Axial, points 7.4
14
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 9.8
33
Strength to Weight: Bending, points 12
26
Thermal Diffusivity, mm2/s 34
3.9
Thermal Shock Resistance, points 11
24

Alloy Composition

Antimony (Sb), % 0 to 0.1
0
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 0.5
0 to 3.0
Lead (Pb), % 0 to 0.090
0
Manganese (Mn), % 0 to 0.8
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 0 to 0.25
0 to 3.0
Phosphorus (P), % 0 to 0.15
0
Silicon (Si), % 2.5 to 3.5
0.2 to 2.0
Tin (Sn), % 0 to 2.0
0
Tungsten (W), % 0
3.5 to 5.5
Zinc (Zn), % 7.0 to 9.0
0
Residuals, % 0 to 0.8
0