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C95820 Bronze vs. R31233 Cobalt

C95820 bronze belongs to the copper alloys classification, while R31233 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C95820 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, % 15
17
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 44
85
Tensile Strength: Ultimate (UTS), MPa 730
1020
Tensile Strength: Yield (Proof), MPa 310
420

Thermal Properties

Latent Heat of Fusion, J/g 230
320
Melting Completion (Liquidus), °C 1080
1350
Melting Onset (Solidus), °C 1020
1330
Specific Heat Capacity, J/kg-K 440
440
Thermal Conductivity, W/m-K 38
12
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
2.1

Otherwise Unclassified Properties

Density, g/cm3 8.3
8.6
Embodied Carbon, kg CO2/kg material 3.5
8.4
Embodied Energy, MJ/kg 56
110
Embodied Water, L/kg 380
480

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
140
Resilience: Unit (Modulus of Resilience), kJ/m3 400
410
Stiffness to Weight: Axial, points 8.0
14
Stiffness to Weight: Bending, points 20
23
Strength to Weight: Axial, points 24
33
Strength to Weight: Bending, points 22
26
Thermal Diffusivity, mm2/s 11
3.2
Thermal Shock Resistance, points 25
25

Alloy Composition

Aluminum (Al), % 9.0 to 10
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0
0.020 to 0.1
Chromium (Cr), % 0
23.5 to 27.5
Cobalt (Co), % 0
44.7 to 63.3
Copper (Cu), % 77.5 to 82.5
0
Iron (Fe), % 4.0 to 5.0
1.0 to 5.0
Lead (Pb), % 0 to 0.020
0
Manganese (Mn), % 0 to 1.5
0.1 to 1.5
Molybdenum (Mo), % 0
4.0 to 6.0
Nickel (Ni), % 4.5 to 5.8
7.0 to 11
Nitrogen (N), % 0
0.030 to 0.12
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
0.050 to 1.0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 0 to 0.020
0
Tungsten (W), % 0
1.0 to 3.0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.8
0