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ASTM B596 Au-Cu vs. Z41321 Zinc

ASTM B596 Au-Cu belongs to the otherwise unclassified metals classification, while Z41321 zinc belongs to the zinc alloys. There are 18 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM B596 Au-Cu and the bottom bar is Z41321 zinc.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
87
Elongation at Break, % 4.3 to 17
60
Poisson's Ratio 0.41
0.25
Shear Modulus, GPa 36
35
Tensile Strength: Ultimate (UTS), MPa 450 to 620
190

Thermal Properties

Latent Heat of Fusion, J/g 77
110
Melting Completion (Liquidus), °C 1060
410
Melting Onset (Solidus), °C 930
400
Specific Heat Capacity, J/kg-K 150
390
Thermal Expansion, µm/m-K 14
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
27
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
37

Otherwise Unclassified Properties

Density, g/cm3 18
6.6

Common Calculations

Stiffness to Weight: Axial, points 3.1
7.4
Stiffness to Weight: Bending, points 8.5
23
Strength to Weight: Axial, points 6.8 to 9.4
7.9
Strength to Weight: Bending, points 7.1 to 8.8
11
Thermal Shock Resistance, points 22 to 30
5.9

Alloy Composition


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Aluminum (Al), % 0
0 to 0.010
Cadmium (Cd), % 0
0 to 0.0050
Copper (Cu), % 9.0 to 11
0.5 to 1.0
Gold (Au), % 89 to 91
0
Iron (Fe), % 0
0 to 0.010
Lead (Pb), % 0
0 to 0.010
Tin (Sn), % 0
0 to 0.0030
Titanium (Ti), % 0
0.080 to 0.18
Zinc (Zn), % 0
98.8 to 99.42
Residuals, % 0 to 0.4
0