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R30605 Cobalt vs. C95820 Bronze

R30605 cobalt belongs to the cobalt alloys classification, while C95820 bronze belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is R30605 cobalt and the bottom bar is C95820 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
120
Elongation at Break, % 34
15
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 81
44
Tensile Strength: Ultimate (UTS), MPa 1130 to 1900
730
Tensile Strength: Yield (Proof), MPa 470 to 1600
310

Thermal Properties

Latent Heat of Fusion, J/g 290
230
Melting Completion (Liquidus), °C 1410
1080
Melting Onset (Solidus), °C 1330
1020
Specific Heat Capacity, J/kg-K 410
440
Thermal Conductivity, W/m-K 9.6
38
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
8.2

Otherwise Unclassified Properties

Density, g/cm3 9.6
8.3
Embodied Carbon, kg CO2/kg material 9.8
3.5
Embodied Energy, MJ/kg 140
56
Embodied Water, L/kg 450
380

Common Calculations

Stiffness to Weight: Axial, points 12
8.0
Stiffness to Weight: Bending, points 21
20
Strength to Weight: Axial, points 33 to 55
24
Strength to Weight: Bending, points 25 to 36
22
Thermal Diffusivity, mm2/s 2.5
11
Thermal Shock Resistance, points 31 to 52
25

Alloy Composition


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Aluminum (Al), % 0
9.0 to 10
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 19 to 21
0
Cobalt (Co), % 46.4 to 57
0
Copper (Cu), % 0
77.5 to 82.5
Iron (Fe), % 0 to 3.0
4.0 to 5.0
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 1.0 to 2.0
0 to 1.5
Nickel (Ni), % 9.0 to 11
4.5 to 5.8
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.4
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.020
Tungsten (W), % 14 to 16
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.8