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C63800 Bronze vs. R30035 Cobalt

C63800 bronze belongs to the copper alloys classification, while R30035 cobalt belongs to the cobalt alloys. There are 24 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 C63800 bronze and the bottom bar is R30035 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220 to 230
Elongation at Break, % 7.9 to 41
9.0 to 46
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 43
84 to 89
Tensile Strength: Ultimate (UTS), MPa 460 to 1010
900 to 1900

Thermal Properties

Latent Heat of Fusion, J/g 240
320
Melting Completion (Liquidus), °C 1030
1440
Melting Onset (Solidus), °C 1000
1320
Specific Heat Capacity, J/kg-K 410
440
Thermal Conductivity, W/m-K 40
11
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 10
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 30
100
Density, g/cm3 8.6
8.7
Embodied Carbon, kg CO2/kg material 2.8
10
Embodied Energy, MJ/kg 45
140
Embodied Water, L/kg 330
410

Common Calculations

Stiffness to Weight: Axial, points 7.4
14 to 15
Stiffness to Weight: Bending, points 19
23 to 24
Strength to Weight: Axial, points 15 to 33
29 to 61
Strength to Weight: Bending, points 15 to 26
24 to 39
Thermal Diffusivity, mm2/s 11
3.0
Thermal Shock Resistance, points 17 to 36
23 to 46

Alloy Composition

Aluminum (Al), % 2.5 to 3.1
0
Boron (B), % 0
0 to 0.015
Carbon (C), % 0
0 to 0.025
Chromium (Cr), % 0
19 to 21
Cobalt (Co), % 0.25 to 0.55
29.1 to 39
Copper (Cu), % 92.4 to 95.8
0
Iron (Fe), % 0 to 0.2
0 to 1.0
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.1
0 to 0.15
Molybdenum (Mo), % 0
9.0 to 10.5
Nickel (Ni), % 0 to 0.2
33 to 37
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 1.5 to 2.1
0 to 0.15
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0
0 to 1.0
Zinc (Zn), % 0 to 0.8
0
Residuals, % 0 to 0.5
0