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C95520 Bronze vs. R30012 Cobalt

C95520 bronze belongs to the copper alloys classification, while R30012 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 C95520 bronze and the bottom bar is R30012 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 2.6
1.0
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 44
86
Tensile Strength: Ultimate (UTS), MPa 970
830
Tensile Strength: Yield (Proof), MPa 530
650

Thermal Properties

Latent Heat of Fusion, J/g 240
320
Melting Completion (Liquidus), °C 1070
1470
Melting Onset (Solidus), °C 1020
1280
Specific Heat Capacity, J/kg-K 450
440
Thermal Conductivity, W/m-K 40
15
Thermal Expansion, µm/m-K 18
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 12
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.8
Embodied Carbon, kg CO2/kg material 3.6
8.3
Embodied Energy, MJ/kg 58
120
Embodied Water, L/kg 390
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
7.7
Resilience: Unit (Modulus of Resilience), kJ/m3 1210
960
Stiffness to Weight: Axial, points 8.0
14
Stiffness to Weight: Bending, points 20
23
Strength to Weight: Axial, points 33
26
Strength to Weight: Bending, points 27
22
Thermal Diffusivity, mm2/s 11
3.8
Thermal Shock Resistance, points 33
23

Alloy Composition

Aluminum (Al), % 10.5 to 11.5
0
Carbon (C), % 0
1.4 to 2.0
Chromium (Cr), % 0 to 0.050
27 to 32
Cobalt (Co), % 0 to 0.2
47.5 to 64.1
Copper (Cu), % 74.5 to 81.3
0
Iron (Fe), % 4.0 to 5.5
0 to 3.0
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 4.2 to 6.0
0 to 3.0
Silicon (Si), % 0 to 0.15
0 to 2.0
Tin (Sn), % 0 to 0.25
0
Tungsten (W), % 0
7.5 to 9.5
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.5
0