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C91000 Bronze vs. R30605 Cobalt

C91000 bronze belongs to the copper alloys classification, while R30605 cobalt belongs to the cobalt alloys. There are 24 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C91000 bronze and the bottom bar is R30605 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 7.0
34
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 39
81
Tensile Strength: Ultimate (UTS), MPa 230
1130 to 1900
Tensile Strength: Yield (Proof), MPa 150
470 to 1600

Thermal Properties

Latent Heat of Fusion, J/g 180
290
Melting Completion (Liquidus), °C 960
1410
Melting Onset (Solidus), °C 820
1330
Specific Heat Capacity, J/kg-K 360
410
Thermal Conductivity, W/m-K 64
9.6
Thermal Expansion, µm/m-K 18
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 9.4
1.8

Otherwise Unclassified Properties

Density, g/cm3 8.6
9.6
Embodied Carbon, kg CO2/kg material 4.1
9.8
Embodied Energy, MJ/kg 67
140
Embodied Water, L/kg 420
450

Common Calculations

Stiffness to Weight: Axial, points 6.8
12
Stiffness to Weight: Bending, points 18
21
Strength to Weight: Axial, points 7.5
33 to 55
Strength to Weight: Bending, points 9.7
25 to 36
Thermal Diffusivity, mm2/s 20
2.5
Thermal Shock Resistance, points 8.8
31 to 52

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.2
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0
46.4 to 57
Copper (Cu), % 84 to 86
0
Iron (Fe), % 0 to 0.1
0 to 3.0
Lead (Pb), % 0 to 0.2
0
Manganese (Mn), % 0
1.0 to 2.0
Nickel (Ni), % 0 to 0.8
9.0 to 11
Phosphorus (P), % 0 to 1.5
0 to 0.040
Silicon (Si), % 0 to 0.0050
0 to 0.4
Sulfur (S), % 0 to 0.050
0 to 0.030
Tin (Sn), % 14 to 16
0
Tungsten (W), % 0
14 to 16
Zinc (Zn), % 0 to 1.5
0
Residuals, % 0 to 0.6
0