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Zamak 7 vs. C87700 Bronze

Zamak 7 belongs to the zinc alloys classification, while C87700 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is C87700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
110
Elongation at Break, % 13
3.6
Poisson's Ratio 0.25
0.33
Shear Modulus, GPa 33
42
Tensile Strength: Ultimate (UTS), MPa 280
300
Tensile Strength: Yield (Proof), MPa 250
120

Thermal Properties

Latent Heat of Fusion, J/g 120
250
Maximum Temperature: Mechanical, °C 95
180
Melting Completion (Liquidus), °C 390
980
Melting Onset (Solidus), °C 380
900
Specific Heat Capacity, J/kg-K 410
400
Thermal Conductivity, W/m-K 110
120
Thermal Expansion, µm/m-K 27
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
45
Electrical Conductivity: Equal Weight (Specific), % IACS 38
48

Otherwise Unclassified Properties

Base Metal Price, % relative 11
29
Density, g/cm3 6.4
8.5
Embodied Carbon, kg CO2/kg material 3.0
2.7
Embodied Energy, MJ/kg 57
45
Embodied Water, L/kg 380
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
8.6
Resilience: Unit (Modulus of Resilience), kJ/m3 370
64
Stiffness to Weight: Axial, points 7.5
7.4
Stiffness to Weight: Bending, points 23
19
Strength to Weight: Axial, points 12
9.8
Strength to Weight: Bending, points 15
12
Thermal Diffusivity, mm2/s 43
34
Thermal Shock Resistance, points 8.6
11

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Antimony (Sb), % 0
0 to 0.1
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
87.5 to 90.5
Iron (Fe), % 0 to 0.075
0 to 0.5
Lead (Pb), % 0 to 0.0030
0 to 0.090
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0 to 0.8
Nickel (Ni), % 0.0050 to 0.020
0 to 0.25
Phosphorus (P), % 0
0 to 0.15
Silicon (Si), % 0
2.5 to 3.5
Tin (Sn), % 0 to 0.0010
0 to 2.0
Zinc (Zn), % 95.3 to 96.5
7.0 to 9.0
Residuals, % 0
0 to 0.8