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C95700 Bronze vs. R30016 Cobalt

C95700 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 C95700 bronze and the bottom bar is R30016 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 130
220
Elongation at Break, % 23
8.4
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 47
85
Tensile Strength: Ultimate (UTS), MPa 680
1010
Tensile Strength: Yield (Proof), MPa 310
580

Thermal Properties

Latent Heat of Fusion, J/g 230
320
Melting Completion (Liquidus), °C 990
1360
Melting Onset (Solidus), °C 950
1270
Specific Heat Capacity, J/kg-K 440
450
Thermal Conductivity, W/m-K 12
15
Thermal Expansion, µm/m-K 18
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.0

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.5
Embodied Carbon, kg CO2/kg material 3.3
7.7
Embodied Energy, MJ/kg 54
110
Embodied Water, L/kg 360
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
72
Resilience: Unit (Modulus of Resilience), kJ/m3 390
770
Stiffness to Weight: Axial, points 8.5
14
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 23
33
Strength to Weight: Bending, points 21
26
Thermal Diffusivity, mm2/s 3.3
3.9
Thermal Shock Resistance, points 21
24

Alloy Composition

Aluminum (Al), % 7.0 to 8.5
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), % 71 to 78.5
0
Iron (Fe), % 2.0 to 4.0
0 to 3.0
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 11 to 14
0.5 to 2.0
Molybdenum (Mo), % 0
0 to 1.5
Nickel (Ni), % 1.5 to 3.0
0 to 3.0
Silicon (Si), % 0 to 0.1
0.2 to 2.0
Tungsten (W), % 0
3.5 to 5.5
Residuals, % 0 to 0.5
0