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ASTM B477 Au-Ni-Ag vs. ASTM B596 Au-Cu

Both ASTM B477 Au-Ni-Ag and ASTM B596 Au-Cu are otherwise unclassified metals. They have 75% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM B477 Au-Ni-Ag and the bottom bar is ASTM B596 Au-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 95
100
Elongation at Break, % 5.5 to 11
4.3 to 17
Poisson's Ratio 0.41
0.41
Shear Modulus, GPa 34
36
Shear Strength, MPa 190 to 320
280 to 360
Tensile Strength: Ultimate (UTS), MPa 310 to 550
450 to 620

Thermal Properties

Latent Heat of Fusion, J/g 80
77
Melting Completion (Liquidus), °C 1010
1060
Melting Onset (Solidus), °C 930
930
Specific Heat Capacity, J/kg-K 160
150
Thermal Expansion, µm/m-K 15
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
14
Electrical Conductivity: Equal Weight (Specific), % IACS 7.5
6.7

Otherwise Unclassified Properties

Density, g/cm3 17
18

Common Calculations

Stiffness to Weight: Axial, points 3.1
3.1
Stiffness to Weight: Bending, points 8.9
8.5
Strength to Weight: Axial, points 5.0 to 9.0
6.8 to 9.4
Strength to Weight: Bending, points 6.0 to 8.8
7.1 to 8.8
Thermal Shock Resistance, points 16 to 28
22 to 30

Alloy Composition

Copper (Cu), % 0
9.0 to 11
Gold (Au), % 74.2 to 75.8
89 to 91
Nickel (Ni), % 2.6 to 3.4
0
Silver (Ag), % 21.4 to 22.6
0
Residuals, % 0
0 to 0.4