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C31400 Bronze vs. R30001 Cobalt

C31400 bronze belongs to the copper alloys classification, while R30001 cobalt belongs to the cobalt alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C31400 bronze and the bottom bar is R30001 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 6.8 to 29
1.0
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 42
86
Tensile Strength: Ultimate (UTS), MPa 270 to 420
620

Thermal Properties

Latent Heat of Fusion, J/g 200
310
Melting Completion (Liquidus), °C 1040
1530
Melting Onset (Solidus), °C 1010
1260
Specific Heat Capacity, J/kg-K 380
430
Thermal Conductivity, W/m-K 180
15
Thermal Expansion, µm/m-K 18
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 43
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.8
9.0
Embodied Carbon, kg CO2/kg material 2.6
8.9
Embodied Energy, MJ/kg 42
130
Embodied Water, L/kg 310
460

Common Calculations

Stiffness to Weight: Axial, points 7.1
14
Stiffness to Weight: Bending, points 18
22
Strength to Weight: Axial, points 8.7 to 13
19
Strength to Weight: Bending, points 11 to 14
18
Thermal Diffusivity, mm2/s 54
3.7
Thermal Shock Resistance, points 9.6 to 15
19

Alloy Composition


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Carbon (C), % 0
2.0 to 3.0
Chromium (Cr), % 0
28 to 32
Cobalt (Co), % 0
43 to 59
Copper (Cu), % 87.5 to 90.5
0
Iron (Fe), % 0 to 0.1
0 to 3.0
Lead (Pb), % 1.3 to 2.5
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.7
0 to 3.0
Silicon (Si), % 0
0 to 2.0
Tungsten (W), % 0
11 to 13
Zinc (Zn), % 5.8 to 11.2
0
Residuals, % 0 to 0.4
0