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C63020 Bronze vs. R31233 Cobalt

C63020 bronze belongs to the copper alloys classification, while R31233 cobalt belongs to the cobalt alloys. There are 24 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 C63020 bronze and the bottom bar is R31233 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Elongation at Break, % 6.8
17
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 44
85
Tensile Strength: Ultimate (UTS), MPa 1020
1020
Tensile Strength: Yield (Proof), MPa 740
420

Thermal Properties

Latent Heat of Fusion, J/g 230
320
Melting Completion (Liquidus), °C 1070
1350
Melting Onset (Solidus), °C 1020
1330
Specific Heat Capacity, J/kg-K 450
440
Thermal Conductivity, W/m-K 40
12
Thermal Expansion, µm/m-K 18
13

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.6
Embodied Carbon, kg CO2/kg material 3.6
8.4
Embodied Energy, MJ/kg 58
110
Embodied Water, L/kg 390
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63
140
Resilience: Unit (Modulus of Resilience), kJ/m3 2320
410
Stiffness to Weight: Axial, points 8.0
14
Stiffness to Weight: Bending, points 20
23
Strength to Weight: Axial, points 34
33
Strength to Weight: Bending, points 27
26
Thermal Diffusivity, mm2/s 11
3.2
Thermal Shock Resistance, points 35
25

Alloy Composition


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Aluminum (Al), % 10 to 11
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0
0.020 to 0.1
Chromium (Cr), % 0 to 0.050
23.5 to 27.5
Cobalt (Co), % 0 to 0.2
44.7 to 63.3
Copper (Cu), % 74.7 to 81.8
0
Iron (Fe), % 4.0 to 5.5
1.0 to 5.0
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0 to 1.5
0.1 to 1.5
Molybdenum (Mo), % 0
4.0 to 6.0
Nickel (Ni), % 4.2 to 6.0
7.0 to 11
Nitrogen (N), % 0
0.030 to 0.12
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.050 to 1.0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 0 to 0.25
0
Tungsten (W), % 0
1.0 to 3.0
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.5
0