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C95820 Bronze vs. R30006 Cobalt

C95820 bronze belongs to the copper alloys classification, while R30006 cobalt belongs to the cobalt alloys. There are 26 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 C95820 bronze and the bottom bar is R30006 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 15
1.0
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 44
85
Tensile Strength: Ultimate (UTS), MPa 730
900
Tensile Strength: Yield (Proof), MPa 310
540

Thermal Properties

Latent Heat of Fusion, J/g 230
320
Melting Completion (Liquidus), °C 1080
1400
Melting Onset (Solidus), °C 1020
1290
Specific Heat Capacity, J/kg-K 440
450
Thermal Conductivity, W/m-K 38
15
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
1.7

Otherwise Unclassified Properties

Density, g/cm3 8.3
8.6
Embodied Carbon, kg CO2/kg material 3.5
7.8
Embodied Energy, MJ/kg 56
110
Embodied Water, L/kg 380
500

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
7.8
Resilience: Unit (Modulus of Resilience), kJ/m3 400
670
Stiffness to Weight: Axial, points 8.0
14
Stiffness to Weight: Bending, points 20
23
Strength to Weight: Axial, points 24
29
Strength to Weight: Bending, points 22
24
Thermal Diffusivity, mm2/s 11
3.9
Thermal Shock Resistance, points 25
26

Alloy Composition

Aluminum (Al), % 9.0 to 10
0
Carbon (C), % 0
0.9 to 1.4
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
48.6 to 68.1
Copper (Cu), % 77.5 to 82.5
0
Iron (Fe), % 4.0 to 5.0
0 to 3.0
Lead (Pb), % 0 to 0.020
0
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 4.5 to 5.8
0 to 3.0
Silicon (Si), % 0 to 0.1
0 to 2.0
Tin (Sn), % 0 to 0.020
0
Tungsten (W), % 0
4.0 to 6.0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.8
0