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C31400 Bronze vs. C43500 Brass

Both C31400 bronze and C43500 brass are copper alloys. They have 90% of their average alloy composition in common.

For each property being compared, the top bar is C31400 bronze and the bottom bar is C43500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 6.8 to 29
8.5 to 46
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 42
42
Shear Strength, MPa 180 to 240
220 to 310
Tensile Strength: Ultimate (UTS), MPa 270 to 420
320 to 530
Tensile Strength: Yield (Proof), MPa 78 to 310
120 to 480

Thermal Properties

Latent Heat of Fusion, J/g 200
190
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 1040
1000
Melting Onset (Solidus), °C 1010
970
Specific Heat Capacity, J/kg-K 380
380
Thermal Conductivity, W/m-K 180
120
Thermal Expansion, µm/m-K 18
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
28
Electrical Conductivity: Equal Weight (Specific), % IACS 43
30

Otherwise Unclassified Properties

Base Metal Price, % relative 29
28
Density, g/cm3 8.8
8.5
Embodied Carbon, kg CO2/kg material 2.6
2.7
Embodied Energy, MJ/kg 42
45
Embodied Water, L/kg 310
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 59
44 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 28 to 420
65 to 1040
Stiffness to Weight: Axial, points 7.1
7.2
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 8.7 to 13
10 to 17
Strength to Weight: Bending, points 11 to 14
12 to 17
Thermal Diffusivity, mm2/s 54
37
Thermal Shock Resistance, points 9.6 to 15
11 to 18

Alloy Composition


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Copper (Cu), % 87.5 to 90.5
79 to 83
Iron (Fe), % 0 to 0.1
0 to 0.050
Lead (Pb), % 1.3 to 2.5
0 to 0.090
Nickel (Ni), % 0 to 0.7
0
Tin (Sn), % 0
0.6 to 1.2
Zinc (Zn), % 5.8 to 11.2
15.4 to 20.4
Residuals, % 0 to 0.4
0 to 0.3

Comparable Variants