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ASTM B596 Au-Cu vs. AWS BAg-37

Both ASTM B596 Au-Cu and AWS BAg-37 are otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (7, 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 AWS BAg-37.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
94
Poisson's Ratio 0.41
0.32
Shear Modulus, GPa 36
36
Tensile Strength: Ultimate (UTS), MPa 450 to 620
180

Thermal Properties

Latent Heat of Fusion, J/g 77
150
Melting Completion (Liquidus), °C 1060
780
Melting Onset (Solidus), °C 930
690
Specific Heat Capacity, J/kg-K 150
350
Thermal Expansion, µm/m-K 14
21

Otherwise Unclassified Properties

Density, g/cm3 18
8.5

Common Calculations

Stiffness to Weight: Axial, points 3.1
6.1
Stiffness to Weight: Bending, points 8.5
18
Strength to Weight: Axial, points 6.8 to 9.4
5.9
Strength to Weight: Bending, points 7.1 to 8.8
8.3
Thermal Shock Resistance, points 22 to 30
6.6

Alloy Composition


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Copper (Cu), % 9.0 to 11
39 to 41
Gold (Au), % 89 to 91
0
Silver (Ag), % 0
24 to 26
Tin (Sn), % 0
1.5 to 2.5
Zinc (Zn), % 0
31 to 35
Residuals, % 0 to 0.4
0 to 0.15