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C87500 Brass vs. Zamak 7

C87500 brass 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 C87500 brass and the bottom bar is Zamak 7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
86
Elongation at Break, % 18
13
Poisson's Ratio 0.33
0.25
Shear Modulus, GPa 42
33
Tensile Strength: Ultimate (UTS), MPa 460
280
Tensile Strength: Yield (Proof), MPa 190
250

Thermal Properties

Latent Heat of Fusion, J/g 260
120
Maximum Temperature: Mechanical, °C 170
95
Melting Completion (Liquidus), °C 920
390
Melting Onset (Solidus), °C 820
380
Specific Heat Capacity, J/kg-K 410
410
Thermal Conductivity, W/m-K 28
110
Thermal Expansion, µm/m-K 18
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.7
27
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
38

Otherwise Unclassified Properties

Base Metal Price, % relative 27
11
Density, g/cm3 8.3
6.4
Embodied Carbon, kg CO2/kg material 2.7
3.0
Embodied Energy, MJ/kg 44
57
Embodied Water, L/kg 300
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 67
36
Resilience: Unit (Modulus of Resilience), kJ/m3 160
370
Stiffness to Weight: Axial, points 7.4
7.5
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 16
12
Strength to Weight: Bending, points 16
15
Thermal Diffusivity, mm2/s 8.3
43
Thermal Shock Resistance, points 17
8.6

Alloy Composition

Aluminum (Al), % 0 to 0.5
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0020
Copper (Cu), % 79 to 85
0 to 0.25
Iron (Fe), % 0
0 to 0.075
Lead (Pb), % 0 to 0.5
0 to 0.0030
Magnesium (Mg), % 0
0.0050 to 0.020
Nickel (Ni), % 0
0.0050 to 0.020
Silicon (Si), % 3.0 to 5.0
0
Tin (Sn), % 0
0 to 0.0010
Zinc (Zn), % 12 to 16
95.3 to 96.5
Residuals, % 0 to 0.5
0