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C69710 Brass vs. Zamak 2

C69710 brass belongs to the copper alloys classification, while Zamak 2 belongs to the zinc alloys. They have a modest 21% 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 (6, in this case) are not shown.

For each property being compared, the top bar is C69710 brass and the bottom bar is Zamak 2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
87
Elongation at Break, % 25
6.0
Poisson's Ratio 0.32
0.26
Shear Modulus, GPa 41
33
Shear Strength, MPa 300
320
Tensile Strength: Ultimate (UTS), MPa 470
360
Tensile Strength: Yield (Proof), MPa 230
270

Thermal Properties

Latent Heat of Fusion, J/g 240
130
Maximum Temperature: Mechanical, °C 160
95
Melting Completion (Liquidus), °C 930
390
Melting Onset (Solidus), °C 880
380
Specific Heat Capacity, J/kg-K 400
410
Thermal Conductivity, W/m-K 40
110
Thermal Expansion, µm/m-K 19
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
25
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
35

Otherwise Unclassified Properties

Base Metal Price, % relative 26
12
Density, g/cm3 8.3
6.5
Embodied Carbon, kg CO2/kg material 2.7
3.0
Embodied Energy, MJ/kg 44
57
Embodied Water, L/kg 310
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
20
Resilience: Unit (Modulus of Resilience), kJ/m3 250
420
Stiffness to Weight: Axial, points 7.3
7.5
Stiffness to Weight: Bending, points 19
23
Strength to Weight: Axial, points 16
15
Strength to Weight: Bending, points 16
17
Thermal Diffusivity, mm2/s 12
41
Thermal Shock Resistance, points 16
11

Alloy Composition


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Aluminum (Al), % 0
3.5 to 4.3
Arsenic (As), % 0.030 to 0.060
0
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 75 to 80
2.5 to 3.3
Iron (Fe), % 0 to 0.2
0 to 0.1
Lead (Pb), % 0.5 to 1.5
0 to 0.0050
Magnesium (Mg), % 0
0.020 to 0.060
Manganese (Mn), % 0 to 0.4
0
Nickel (Ni), % 0
0 to 0.020
Silicon (Si), % 2.5 to 3.5
0 to 0.030
Tin (Sn), % 0
0 to 0.0030
Zinc (Zn), % 13.8 to 22
92.2 to 94
Residuals, % 0 to 0.5
0