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C67400 Bronze vs. R31537 Cobalt

C67400 bronze belongs to the copper alloys classification, while R31537 cobalt belongs to the cobalt alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C67400 bronze and the bottom bar is R31537 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Elongation at Break, % 22 to 28
14 to 23
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 41
87
Tensile Strength: Ultimate (UTS), MPa 480 to 610
1000 to 1340
Tensile Strength: Yield (Proof), MPa 250 to 370
590 to 940

Thermal Properties

Latent Heat of Fusion, J/g 190
320
Melting Completion (Liquidus), °C 890
1360
Melting Onset (Solidus), °C 870
1290
Specific Heat Capacity, J/kg-K 400
450
Thermal Conductivity, W/m-K 100
13
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 26
2.1

Otherwise Unclassified Properties

Density, g/cm3 7.9
8.4
Embodied Carbon, kg CO2/kg material 2.8
8.1
Embodied Energy, MJ/kg 48
110
Embodied Water, L/kg 330
530

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 120
140 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 660
780 to 1990
Stiffness to Weight: Axial, points 7.5
15
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 17 to 22
33 to 44
Strength to Weight: Bending, points 17 to 20
26 to 32
Thermal Diffusivity, mm2/s 32
3.4
Thermal Shock Resistance, points 16 to 20
24 to 32

Alloy Composition

Aluminum (Al), % 0.5 to 2.0
0
Carbon (C), % 0
0 to 0.14
Chromium (Cr), % 0
26 to 30
Cobalt (Co), % 0
58.9 to 69
Copper (Cu), % 57 to 60
0
Iron (Fe), % 0 to 0.35
0 to 0.75
Lead (Pb), % 0 to 0.5
0
Manganese (Mn), % 2.0 to 3.5
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 7.0
Nickel (Ni), % 0 to 0.25
0 to 1.0
Nitrogen (N), % 0
0 to 0.25
Silicon (Si), % 0.5 to 1.5
0 to 1.0
Tin (Sn), % 0 to 0.3
0
Zinc (Zn), % 31.1 to 40
0
Residuals, % 0 to 0.5
0