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C31400 Bronze vs. C68700 Brass

Both C31400 bronze and C68700 brass are copper alloys. They have 86% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C31400 bronze and the bottom bar is C68700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 42
41
Tensile Strength: Ultimate (UTS), MPa 270 to 420
390
Tensile Strength: Yield (Proof), MPa 78 to 310
140

Thermal Properties

Latent Heat of Fusion, J/g 200
190
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 1040
970
Melting Onset (Solidus), °C 1010
930
Specific Heat Capacity, J/kg-K 380
400
Thermal Conductivity, W/m-K 180
100
Thermal Expansion, µm/m-K 18
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
23
Electrical Conductivity: Equal Weight (Specific), % IACS 43
25

Otherwise Unclassified Properties

Base Metal Price, % relative 29
26
Density, g/cm3 8.8
8.3
Embodied Carbon, kg CO2/kg material 2.6
2.8
Embodied Energy, MJ/kg 42
46
Embodied Water, L/kg 310
340

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 28 to 420
90
Stiffness to Weight: Axial, points 7.1
7.3
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 8.7 to 13
13
Strength to Weight: Bending, points 11 to 14
14
Thermal Diffusivity, mm2/s 54
30
Thermal Shock Resistance, points 9.6 to 15
13

Alloy Composition


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Aluminum (Al), % 0
1.8 to 2.5
Arsenic (As), % 0
0.020 to 0.1
Copper (Cu), % 87.5 to 90.5
76 to 79
Iron (Fe), % 0 to 0.1
0 to 0.060
Lead (Pb), % 1.3 to 2.5
0 to 0.070
Nickel (Ni), % 0 to 0.7
0
Zinc (Zn), % 5.8 to 11.2
17.8 to 22.2
Residuals, % 0 to 0.4
0 to 0.5