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ASTM B596 Au-Cu vs. ASTM B780 Alloy

Both ASTM B596 Au-Cu and ASTM B780 alloy are otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM B596 Au-Cu and the bottom bar is ASTM B780 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
83
Elongation at Break, % 4.3 to 17
1.1 to 9.1
Poisson's Ratio 0.41
0.36
Shear Modulus, GPa 36
30
Shear Strength, MPa 280 to 360
200 to 340
Tensile Strength: Ultimate (UTS), MPa 450 to 620
330 to 590

Thermal Properties

Latent Heat of Fusion, J/g 77
140
Specific Heat Capacity, J/kg-K 150
270
Thermal Expansion, µm/m-K 14
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
70 to 76
Electrical Conductivity: Equal Weight (Specific), % IACS 6.7
62 to 68

Otherwise Unclassified Properties

Density, g/cm3 18
10

Common Calculations

Stiffness to Weight: Axial, points 3.1
4.5
Stiffness to Weight: Bending, points 8.5
14
Strength to Weight: Axial, points 6.8 to 9.4
9.1 to 16
Strength to Weight: Bending, points 7.1 to 8.8
11 to 15
Thermal Shock Resistance, points 22 to 30
16 to 29

Alloy Composition


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Cadmium (Cd), % 0
0 to 0.050
Copper (Cu), % 9.0 to 11
23.5 to 25.7
Gold (Au), % 89 to 91
0
Iron (Fe), % 0
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Nickel (Ni), % 0
0.35 to 0.65
Silver (Ag), % 0
74 to 76
Zinc (Zn), % 0
0 to 0.060
Residuals, % 0 to 0.4
0

Comparable Variants