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Zamak 7 vs. C87800 Brass

Zamak 7 belongs to the zinc alloys classification, while C87800 brass belongs to the copper alloys. 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 7 and the bottom bar is C87800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 86
110
Elongation at Break, % 13
25
Poisson's Ratio 0.25
0.33
Shear Modulus, GPa 33
42
Tensile Strength: Ultimate (UTS), MPa 280
590
Tensile Strength: Yield (Proof), MPa 250
350

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
130
Resilience: Unit (Modulus of Resilience), kJ/m3 370
540
Stiffness to Weight: Axial, points 7.5
7.4
Stiffness to Weight: Bending, points 23
19
Strength to Weight: Axial, points 12
20
Strength to Weight: Bending, points 15
19
Thermal Diffusivity, mm2/s 43
8.3
Thermal Shock Resistance, points 8.6
21

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0 to 0.15
Antimony (Sb), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.050
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
80 to 84.2
Iron (Fe), % 0 to 0.075
0 to 0.15
Lead (Pb), % 0 to 0.0030
0 to 0.15
Magnesium (Mg), % 0.0050 to 0.020
0 to 0.010
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 0.0050 to 0.020
0 to 0.2
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0
3.8 to 4.2
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 0.0010
0 to 0.25
Zinc (Zn), % 95.3 to 96.5
12 to 16
Residuals, % 0
0 to 0.5