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Zamak 7 vs. CC762S Brass

Zamak 7 belongs to the zinc alloys classification, while CC762S brass belongs to the copper alloys. They have a modest 29% 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 (5, in this case) are not shown.

For each property being compared, the top bar is Zamak 7 and the bottom bar is CC762S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
210
Elastic (Young's, Tensile) Modulus, GPa 86
110
Elongation at Break, % 13
7.3
Poisson's Ratio 0.25
0.32
Shear Modulus, GPa 33
43
Tensile Strength: Ultimate (UTS), MPa 280
840
Tensile Strength: Yield (Proof), MPa 250
540

Thermal Properties

Latent Heat of Fusion, J/g 120
200
Maximum Temperature: Mechanical, °C 95
160
Melting Completion (Liquidus), °C 390
920
Melting Onset (Solidus), °C 380
870
Specific Heat Capacity, J/kg-K 410
420
Thermal Conductivity, W/m-K 110
51
Thermal Expansion, µm/m-K 27
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
28
Electrical Conductivity: Equal Weight (Specific), % IACS 38
32

Otherwise Unclassified Properties

Base Metal Price, % relative 11
24
Density, g/cm3 6.4
8.0
Embodied Carbon, kg CO2/kg material 3.0
3.1
Embodied Energy, MJ/kg 57
51
Embodied Water, L/kg 380
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
54
Resilience: Unit (Modulus of Resilience), kJ/m3 370
1290
Stiffness to Weight: Axial, points 7.5
7.8
Stiffness to Weight: Bending, points 23
20
Strength to Weight: Axial, points 12
29
Strength to Weight: Bending, points 15
25
Thermal Diffusivity, mm2/s 43
15
Thermal Shock Resistance, points 8.6
27

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
3.0 to 7.0
Antimony (Sb), % 0
0 to 0.030
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
57 to 67
Iron (Fe), % 0 to 0.075
1.5 to 4.0
Lead (Pb), % 0 to 0.0030
0 to 0.2
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
2.5 to 5.0
Nickel (Ni), % 0.0050 to 0.020
0 to 3.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.1
Tin (Sn), % 0 to 0.0010
0 to 0.2
Zinc (Zn), % 95.3 to 96.5
13.4 to 36