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R30006 Cobalt vs. C90900 Bronze

R30006 cobalt belongs to the cobalt alloys classification, while C90900 bronze belongs to the copper alloys. There are 26 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 C90900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 1.0
15
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 85
40
Tensile Strength: Ultimate (UTS), MPa 900
280
Tensile Strength: Yield (Proof), MPa 540
140

Thermal Properties

Latent Heat of Fusion, J/g 320
190
Melting Completion (Liquidus), °C 1400
980
Melting Onset (Solidus), °C 1290
820
Specific Heat Capacity, J/kg-K 450
360
Thermal Conductivity, W/m-K 15
65
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
11
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
11

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.7
Embodied Carbon, kg CO2/kg material 7.8
3.9
Embodied Energy, MJ/kg 110
64
Embodied Water, L/kg 500
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
35
Resilience: Unit (Modulus of Resilience), kJ/m3 670
89
Stiffness to Weight: Axial, points 14
6.8
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 29
8.8
Strength to Weight: Bending, points 24
11
Thermal Diffusivity, mm2/s 3.9
21
Thermal Shock Resistance, points 26
10

Alloy Composition


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Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
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
86 to 89
Iron (Fe), % 0 to 3.0
0 to 0.15
Lead (Pb), % 0
0 to 0.25
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0 to 0.5
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0 to 2.0
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0
12 to 14
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.6