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R30006 Cobalt vs. C65500 Bronze

R30006 cobalt belongs to the cobalt alloys classification, while C65500 bronze belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is C65500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
120
Elongation at Break, % 1.0
4.0 to 70
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 85
43
Tensile Strength: Ultimate (UTS), MPa 900
360 to 760
Tensile Strength: Yield (Proof), MPa 540
120 to 430

Thermal Properties

Latent Heat of Fusion, J/g 320
260
Melting Completion (Liquidus), °C 1400
1030
Melting Onset (Solidus), °C 1290
970
Specific Heat Capacity, J/kg-K 450
400
Thermal Conductivity, W/m-K 15
36
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
7.3

Otherwise Unclassified Properties

Calomel Potential, mV -250
-270
Density, g/cm3 8.6
8.6
Embodied Carbon, kg CO2/kg material 7.8
2.7
Embodied Energy, MJ/kg 110
42
Embodied Water, L/kg 500
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
11 to 450
Resilience: Unit (Modulus of Resilience), kJ/m3 670
62 to 790
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 23
19
Strength to Weight: Axial, points 29
12 to 24
Strength to Weight: Bending, points 24
13 to 21
Thermal Diffusivity, mm2/s 3.9
10
Thermal Shock Resistance, points 26
12 to 26

Alloy Composition


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Carbon (C), % 0.9 to 1.4
0
Chromium (Cr), % 27 to 32
0
Cobalt (Co), % 48.6 to 68.1
0
Copper (Cu), % 0
91.5 to 96.7
Iron (Fe), % 0 to 3.0
0 to 0.8
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0
0.5 to 1.3
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0 to 0.6
Silicon (Si), % 0 to 2.0
2.8 to 3.8
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.5