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Zamak 2 vs. C85700 Brass

Zamak 2 belongs to the zinc alloys classification, while C85700 brass belongs to the copper alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 28 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 2 and the bottom bar is C85700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
100
Elongation at Break, % 6.0
17
Poisson's Ratio 0.26
0.31
Shear Modulus, GPa 33
40
Tensile Strength: Ultimate (UTS), MPa 360
310
Tensile Strength: Yield (Proof), MPa 270
110

Thermal Properties

Latent Heat of Fusion, J/g 130
170
Maximum Temperature: Mechanical, °C 95
120
Melting Completion (Liquidus), °C 390
940
Melting Onset (Solidus), °C 380
910
Specific Heat Capacity, J/kg-K 410
380
Thermal Conductivity, W/m-K 110
84
Thermal Expansion, µm/m-K 28
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
22
Electrical Conductivity: Equal Weight (Specific), % IACS 35
25

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 6.5
8.0
Embodied Carbon, kg CO2/kg material 3.0
2.8
Embodied Energy, MJ/kg 57
47
Embodied Water, L/kg 380
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
41
Resilience: Unit (Modulus of Resilience), kJ/m3 420
59
Stiffness to Weight: Axial, points 7.5
7.2
Stiffness to Weight: Bending, points 23
20
Strength to Weight: Axial, points 15
11
Strength to Weight: Bending, points 17
13
Thermal Diffusivity, mm2/s 41
27
Thermal Shock Resistance, points 11
10

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0 to 0.8
Cadmium (Cd), % 0 to 0.0050
0
Copper (Cu), % 2.5 to 3.3
58 to 64
Iron (Fe), % 0 to 0.1
0 to 0.7
Lead (Pb), % 0 to 0.0050
0.8 to 1.5
Magnesium (Mg), % 0.020 to 0.060
0
Nickel (Ni), % 0 to 0.020
0 to 1.0
Silicon (Si), % 0 to 0.030
0 to 0.050
Tin (Sn), % 0 to 0.0030
0.5 to 1.5
Zinc (Zn), % 92.2 to 94
32 to 40
Residuals, % 0
0 to 1.3