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Zamak 7 vs. C34200 Brass

Zamak 7 belongs to the zinc alloys classification, while C34200 brass belongs to the copper alloys. They have a modest 34% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is C34200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
100
Elongation at Break, % 13
3.0 to 17
Poisson's Ratio 0.25
0.31
Shear Modulus, GPa 33
40
Shear Strength, MPa 210
230 to 360
Tensile Strength: Ultimate (UTS), MPa 280
370 to 650
Tensile Strength: Yield (Proof), MPa 250
150 to 420

Thermal Properties

Latent Heat of Fusion, J/g 120
170
Maximum Temperature: Mechanical, °C 95
120
Melting Completion (Liquidus), °C 390
910
Melting Onset (Solidus), °C 380
890
Specific Heat Capacity, J/kg-K 410
380
Thermal Conductivity, W/m-K 110
120
Thermal Expansion, µm/m-K 27
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
26
Electrical Conductivity: Equal Weight (Specific), % IACS 38
29

Otherwise Unclassified Properties

Base Metal Price, % relative 11
24
Density, g/cm3 6.4
8.2
Embodied Carbon, kg CO2/kg material 3.0
2.6
Embodied Energy, MJ/kg 57
45
Embodied Water, L/kg 380
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
9.0 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 370
110 to 870
Stiffness to Weight: Axial, points 7.5
7.1
Stiffness to Weight: Bending, points 23
19
Strength to Weight: Axial, points 12
13 to 22
Strength to Weight: Bending, points 15
14 to 20
Thermal Diffusivity, mm2/s 43
37
Thermal Shock Resistance, points 8.6
12 to 22

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
62 to 65
Iron (Fe), % 0 to 0.075
0 to 0.1
Lead (Pb), % 0 to 0.0030
1.5 to 2.5
Magnesium (Mg), % 0.0050 to 0.020
0
Nickel (Ni), % 0.0050 to 0.020
0
Tin (Sn), % 0 to 0.0010
0
Zinc (Zn), % 95.3 to 96.5
32 to 36.5
Residuals, % 0
0 to 0.4