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R30006 Cobalt vs. C51900 Bronze

R30006 cobalt belongs to the cobalt alloys classification, while C51900 bronze belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is R30006 cobalt and the bottom bar is C51900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
110
Elongation at Break, % 1.0
14 to 29
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 85
42
Tensile Strength: Ultimate (UTS), MPa 900
380 to 620
Tensile Strength: Yield (Proof), MPa 540
390 to 570

Thermal Properties

Latent Heat of Fusion, J/g 320
200
Melting Completion (Liquidus), °C 1400
1040
Melting Onset (Solidus), °C 1290
930
Specific Heat Capacity, J/kg-K 450
380
Thermal Conductivity, W/m-K 15
66
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
14
Electrical Conductivity: Equal Weight (Specific), % IACS 1.7
14

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.8
Embodied Carbon, kg CO2/kg material 7.8
3.2
Embodied Energy, MJ/kg 110
51
Embodied Water, L/kg 500
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 7.8
55 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 670
680 to 1450
Stiffness to Weight: Axial, points 14
7.0
Stiffness to Weight: Bending, points 23
18
Strength to Weight: Axial, points 29
12 to 19
Strength to Weight: Bending, points 24
13 to 18
Thermal Diffusivity, mm2/s 3.9
20
Thermal Shock Resistance, points 26
14 to 22

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
91.7 to 95
Iron (Fe), % 0 to 3.0
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 3.0
0
Phosphorus (P), % 0
0.030 to 0.35
Silicon (Si), % 0 to 2.0
0
Tin (Sn), % 0
5.0 to 7.0
Tungsten (W), % 4.0 to 6.0
0
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.5