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CC755S Brass vs. Zamak 3

CC755S brass belongs to the copper alloys classification, while Zamak 3 belongs to the zinc alloys. They have a modest 38% 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 CC755S brass and the bottom bar is Zamak 3.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
83
Elastic (Young's, Tensile) Modulus, GPa 100
86
Elongation at Break, % 9.5
11
Poisson's Ratio 0.31
0.25
Shear Modulus, GPa 40
33
Tensile Strength: Ultimate (UTS), MPa 390
280
Tensile Strength: Yield (Proof), MPa 250
210

Thermal Properties

Latent Heat of Fusion, J/g 170
120
Maximum Temperature: Mechanical, °C 120
95
Melting Completion (Liquidus), °C 820
390
Melting Onset (Solidus), °C 780
380
Specific Heat Capacity, J/kg-K 390
410
Thermal Conductivity, W/m-K 120
110
Thermal Expansion, µm/m-K 21
27

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 23
11
Density, g/cm3 8.1
6.4
Embodied Carbon, kg CO2/kg material 2.7
3.0
Embodied Energy, MJ/kg 46
57
Embodied Water, L/kg 330
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 33
28
Resilience: Unit (Modulus of Resilience), kJ/m3 290
260
Stiffness to Weight: Axial, points 7.1
7.5
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 14
12
Strength to Weight: Bending, points 15
15
Thermal Diffusivity, mm2/s 38
43
Thermal Shock Resistance, points 13
8.6

Alloy Composition

Aluminum (Al), % 0.4 to 0.7
3.5 to 4.3
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 59.5 to 61
0 to 0.25
Iron (Fe), % 0.050 to 0.2
0 to 0.1
Lead (Pb), % 1.2 to 1.7
0 to 0.0050
Magnesium (Mg), % 0
0.020 to 0.060
Manganese (Mn), % 0 to 0.050
0
Nickel (Ni), % 0 to 0.2
0 to 0.020
Silicon (Si), % 0 to 0.050
0 to 0.030
Tin (Sn), % 0 to 0.3
0 to 0.0030
Zinc (Zn), % 35.8 to 38.9
95.3 to 96.5