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Zamak 7 vs. CC765S Brass

Zamak 7 belongs to the zinc alloys classification, while CC765S brass belongs to the copper alloys. They have a modest 35% 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 CC765S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
130
Elastic (Young's, Tensile) Modulus, GPa 86
110
Elongation at Break, % 13
21
Poisson's Ratio 0.25
0.31
Shear Modulus, GPa 33
42
Tensile Strength: Ultimate (UTS), MPa 280
540
Tensile Strength: Yield (Proof), MPa 250
220

Thermal Properties

Latent Heat of Fusion, J/g 120
180
Maximum Temperature: Mechanical, °C 95
140
Melting Completion (Liquidus), °C 390
860
Melting Onset (Solidus), °C 380
820
Specific Heat Capacity, J/kg-K 410
400
Thermal Conductivity, W/m-K 110
91
Thermal Expansion, µm/m-K 27
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
30
Electrical Conductivity: Equal Weight (Specific), % IACS 38
34

Otherwise Unclassified Properties

Base Metal Price, % relative 11
24
Density, g/cm3 6.4
8.0
Embodied Carbon, kg CO2/kg material 3.0
3.0
Embodied Energy, MJ/kg 57
51
Embodied Water, L/kg 380
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
90
Resilience: Unit (Modulus of Resilience), kJ/m3 370
220
Stiffness to Weight: Axial, points 7.5
7.6
Stiffness to Weight: Bending, points 23
20
Strength to Weight: Axial, points 12
19
Strength to Weight: Bending, points 15
18
Thermal Diffusivity, mm2/s 43
28
Thermal Shock Resistance, points 8.6
17

Alloy Composition

Aluminum (Al), % 3.5 to 4.3
0.5 to 2.5
Antimony (Sb), % 0
0 to 0.080
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.25
51 to 65
Iron (Fe), % 0 to 0.075
0.5 to 2.0
Lead (Pb), % 0 to 0.0030
0 to 0.5
Magnesium (Mg), % 0.0050 to 0.020
0
Manganese (Mn), % 0
0.3 to 3.0
Nickel (Ni), % 0.0050 to 0.020
0 to 6.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.1
Tin (Sn), % 0 to 0.0010
0 to 1.0
Zinc (Zn), % 95.3 to 96.5
19.8 to 47.7