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ASTM B596 Au-Cu vs. C53400 Bronze

ASTM B596 Au-Cu belongs to the otherwise unclassified metals classification, while C53400 bronze belongs to the copper alloys. There are 17 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 C53400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Poisson's Ratio 0.41
0.34
Shear Modulus, GPa 36
42
Tensile Strength: Ultimate (UTS), MPa 450 to 620
330 to 720

Thermal Properties

Latent Heat of Fusion, J/g 77
200
Melting Completion (Liquidus), °C 1060
1050
Melting Onset (Solidus), °C 930
950
Specific Heat Capacity, J/kg-K 150
380
Thermal Expansion, µm/m-K 14
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
15
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
15

Otherwise Unclassified Properties

Density, g/cm3 18
8.9

Common Calculations

Stiffness to Weight: Axial, points 3.1
7.0
Stiffness to Weight: Bending, points 8.5
18
Strength to Weight: Axial, points 6.8 to 9.4
10 to 22
Strength to Weight: Bending, points 7.1 to 8.8
12 to 20
Thermal Shock Resistance, points 22 to 30
12 to 26

Alloy Composition

Copper (Cu), % 9.0 to 11
91.8 to 95.7
Gold (Au), % 89 to 91
0
Iron (Fe), % 0
0 to 0.1
Lead (Pb), % 0
0.8 to 1.2
Phosphorus (P), % 0
0.030 to 0.35
Tin (Sn), % 0
3.5 to 5.8
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.5