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C31400 Bronze vs. Zamak 7

C31400 bronze belongs to the copper alloys classification, while Zamak 7 belongs to the zinc alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C31400 bronze and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
86
Elongation at Break, % 6.8 to 29
13
Poisson's Ratio 0.33
0.25
Shear Modulus, GPa 42
33
Shear Strength, MPa 180 to 240
210
Tensile Strength: Ultimate (UTS), MPa 270 to 420
280
Tensile Strength: Yield (Proof), MPa 78 to 310
250

Thermal Properties

Latent Heat of Fusion, J/g 200
120
Maximum Temperature: Mechanical, °C 180
95
Melting Completion (Liquidus), °C 1040
390
Melting Onset (Solidus), °C 1010
380
Specific Heat Capacity, J/kg-K 380
410
Thermal Conductivity, W/m-K 180
110
Thermal Expansion, µm/m-K 18
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 42
27
Electrical Conductivity: Equal Weight (Specific), % IACS 43
38

Otherwise Unclassified Properties

Base Metal Price, % relative 29
11
Density, g/cm3 8.8
6.4
Embodied Carbon, kg CO2/kg material 2.6
3.0
Embodied Energy, MJ/kg 42
57
Embodied Water, L/kg 310
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 59
36
Resilience: Unit (Modulus of Resilience), kJ/m3 28 to 420
370
Stiffness to Weight: Axial, points 7.1
7.5
Stiffness to Weight: Bending, points 18
23
Strength to Weight: Axial, points 8.7 to 13
12
Strength to Weight: Bending, points 11 to 14
15
Thermal Diffusivity, mm2/s 54
43
Thermal Shock Resistance, points 9.6 to 15
8.6

Alloy Composition


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Aluminum (Al), % 0
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Copper (Cu), % 87.5 to 90.5
0 to 0.25
Iron (Fe), % 0 to 0.1
0 to 0.075
Lead (Pb), % 1.3 to 2.5
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Nickel (Ni), % 0 to 0.7
0.0050 to 0.020
Tin (Sn), % 0
0 to 0.0010
Zinc (Zn), % 5.8 to 11.2
95.3 to 96.5
Residuals, % 0 to 0.4
0