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C31400 Bronze vs. C18900 Copper

Both C31400 bronze and C18900 copper are copper alloys. They have 89% of their average alloy composition in common.

For each property being compared, the top bar is C31400 bronze and the bottom bar is C18900 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 6.8 to 29
14 to 48
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 42
43
Shear Strength, MPa 180 to 240
190 to 300
Tensile Strength: Ultimate (UTS), MPa 270 to 420
260 to 500
Tensile Strength: Yield (Proof), MPa 78 to 310
67 to 390

Thermal Properties

Latent Heat of Fusion, J/g 200
210
Maximum Temperature: Mechanical, °C 180
200
Melting Completion (Liquidus), °C 1040
1080
Melting Onset (Solidus), °C 1010
1020
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 180
130
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
30
Electrical Conductivity: Equal Weight (Specific), % IACS 43
30

Otherwise Unclassified Properties

Base Metal Price, % relative 29
31
Density, g/cm3 8.8
8.9
Embodied Carbon, kg CO2/kg material 2.6
2.7
Embodied Energy, MJ/kg 42
42
Embodied Water, L/kg 310
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 59
65 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 28 to 420
20 to 660
Stiffness to Weight: Axial, points 7.1
7.2
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 8.7 to 13
8.2 to 16
Strength to Weight: Bending, points 11 to 14
10 to 16
Thermal Diffusivity, mm2/s 54
38
Thermal Shock Resistance, points 9.6 to 15
9.3 to 18

Alloy Composition


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Aluminum (Al), % 0
0 to 0.010
Copper (Cu), % 87.5 to 90.5
97.7 to 99.15
Iron (Fe), % 0 to 0.1
0
Lead (Pb), % 1.3 to 2.5
0 to 0.020
Manganese (Mn), % 0
0.1 to 0.3
Nickel (Ni), % 0 to 0.7
0
Phosphorus (P), % 0
0 to 0.050
Silicon (Si), % 0
0.15 to 0.4
Tin (Sn), % 0
0.6 to 0.9
Zinc (Zn), % 5.8 to 11.2
0 to 0.1
Residuals, % 0 to 0.4
0 to 0.5

Comparable Variants