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C87700 Bronze vs. Zamak 7

C87700 bronze belongs to the copper alloys classification, while Zamak 7 belongs to the zinc 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 C87700 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, % 3.6
13
Poisson's Ratio 0.33
0.25
Shear Modulus, GPa 42
33
Tensile Strength: Ultimate (UTS), MPa 300
280
Tensile Strength: Yield (Proof), MPa 120
250

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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