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C18700 Copper vs. C53800 Bronze

Both C18700 copper and C53800 bronze are copper alloys. They have 86% of their average alloy composition in common.

For each property being compared, the top bar is C18700 copper and the bottom bar is C53800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 9.0 to 9.6
2.3
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 43
40
Shear Strength, MPa 170 to 190
470
Tensile Strength: Ultimate (UTS), MPa 290 to 330
830
Tensile Strength: Yield (Proof), MPa 230 to 250
660

Thermal Properties

Latent Heat of Fusion, J/g 210
190
Maximum Temperature: Mechanical, °C 200
160
Melting Completion (Liquidus), °C 1080
980
Melting Onset (Solidus), °C 950
800
Specific Heat Capacity, J/kg-K 380
360
Thermal Conductivity, W/m-K 380
61
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 99
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 30
37
Density, g/cm3 9.0
8.7
Embodied Carbon, kg CO2/kg material 2.6
3.9
Embodied Energy, MJ/kg 41
64
Embodied Water, L/kg 310
420

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
18
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
2020
Stiffness to Weight: Axial, points 7.1
6.8
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 9.0 to 10
26
Strength to Weight: Bending, points 11 to 12
22
Thermal Diffusivity, mm2/s 110
19
Thermal Shock Resistance, points 10 to 12
31

Alloy Composition

Copper (Cu), % 98 to 99.2
85.1 to 86.5
Iron (Fe), % 0
0 to 0.030
Lead (Pb), % 0.8 to 1.5
0.4 to 0.6
Manganese (Mn), % 0
0 to 0.060
Nickel (Ni), % 0
0 to 0.030
Tin (Sn), % 0
13.1 to 13.9
Zinc (Zn), % 0
0 to 0.12
Residuals, % 0
0 to 0.2