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R31538 Cobalt vs. C67500 Bronze

R31538 cobalt belongs to the cobalt alloys classification, while C67500 bronze belongs to the copper 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 R31538 cobalt and the bottom bar is C67500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
100
Elongation at Break, % 13 to 23
14 to 33
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 86
40
Tensile Strength: Ultimate (UTS), MPa 1020 to 1360
430 to 580
Tensile Strength: Yield (Proof), MPa 580 to 930
170 to 370

Thermal Properties

Latent Heat of Fusion, J/g 320
170
Melting Completion (Liquidus), °C 1360
890
Melting Onset (Solidus), °C 1290
870
Specific Heat Capacity, J/kg-K 450
390
Thermal Conductivity, W/m-K 13
110
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
24
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
27

Otherwise Unclassified Properties

Density, g/cm3 8.4
8.0
Embodied Carbon, kg CO2/kg material 8.1
2.8
Embodied Energy, MJ/kg 110
47
Embodied Water, L/kg 530
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 200
61 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 750 to 1920
130 to 650
Stiffness to Weight: Axial, points 15
7.3
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 34 to 45
15 to 20
Strength to Weight: Bending, points 27 to 32
16 to 19
Thermal Diffusivity, mm2/s 3.5
34
Thermal Shock Resistance, points 25 to 33
14 to 19

Alloy Composition


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Aluminum (Al), % 0
0 to 0.25
Carbon (C), % 0.15 to 0.35
0
Chromium (Cr), % 26 to 30
0
Cobalt (Co), % 58.7 to 68.9
0
Copper (Cu), % 0
57 to 60
Iron (Fe), % 0 to 0.75
0.8 to 2.0
Lead (Pb), % 0
0 to 0.2
Manganese (Mn), % 0 to 1.0
0.050 to 0.5
Molybdenum (Mo), % 5.0 to 7.0
0
Nickel (Ni), % 0 to 1.0
0
Nitrogen (N), % 0 to 0.25
0
Silicon (Si), % 0 to 1.0
0
Tin (Sn), % 0
0.5 to 1.5
Zinc (Zn), % 0
35.1 to 41.7
Residuals, % 0
0 to 0.5