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C18700 Copper vs. C61900 Bronze

Both C18700 copper and C61900 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 C61900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 9.0 to 9.6
21 to 32
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 43
43
Shear Strength, MPa 170 to 190
370 to 410
Tensile Strength: Ultimate (UTS), MPa 290 to 330
570 to 650
Tensile Strength: Yield (Proof), MPa 230 to 250
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 210
230
Maximum Temperature: Mechanical, °C 200
220
Melting Completion (Liquidus), °C 1080
1050
Melting Onset (Solidus), °C 950
1040
Specific Heat Capacity, J/kg-K 380
440
Thermal Conductivity, W/m-K 380
79
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 98
11
Electrical Conductivity: Equal Weight (Specific), % IACS 99
11

Otherwise Unclassified Properties

Base Metal Price, % relative 30
28
Density, g/cm3 9.0
8.3
Embodied Carbon, kg CO2/kg material 2.6
3.1
Embodied Energy, MJ/kg 41
51
Embodied Water, L/kg 310
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 29
110 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 240 to 280
230 to 430
Stiffness to Weight: Axial, points 7.1
7.6
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 9.0 to 10
19 to 22
Strength to Weight: Bending, points 11 to 12
18 to 20
Thermal Diffusivity, mm2/s 110
22
Thermal Shock Resistance, points 10 to 12
20 to 23

Alloy Composition

Aluminum (Al), % 0
8.5 to 10
Copper (Cu), % 98 to 99.2
83.6 to 88.5
Iron (Fe), % 0
3.0 to 4.5
Lead (Pb), % 0.8 to 1.5
0 to 0.020
Tin (Sn), % 0
0 to 0.6
Zinc (Zn), % 0
0 to 0.8
Residuals, % 0
0 to 0.5