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AWS BVAu-4 vs. ASTM B477 Au-Ni-Ag

Both AWS BVAu-4 and ASTM B477 Au-Ni-Ag are otherwise unclassified metals. They have 78% of their average alloy composition in common. There are 15 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AWS BVAu-4 and the bottom bar is ASTM B477 Au-Ni-Ag.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
95
Poisson's Ratio 0.4
0.41
Shear Modulus, GPa 41
34
Tensile Strength: Ultimate (UTS), MPa 190
310 to 550

Thermal Properties

Latent Heat of Fusion, J/g 100
80
Melting Completion (Liquidus), °C 950
1010
Melting Onset (Solidus), °C 950
930
Specific Heat Capacity, J/kg-K 190
160
Thermal Expansion, µm/m-K 14
15

Otherwise Unclassified Properties

Density, g/cm3 17
17

Common Calculations

Stiffness to Weight: Axial, points 3.6
3.1
Stiffness to Weight: Bending, points 9.3
8.9
Strength to Weight: Axial, points 3.0
5.0 to 9.0
Strength to Weight: Bending, points 4.2
6.0 to 8.8
Thermal Shock Resistance, points 8.7
16 to 28

Alloy Composition


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Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0
Gold (Au), % 81.5 to 82.5
74.2 to 75.8
Lead (Pb), % 0 to 0.0020
0
Nickel (Ni), % 17.5 to 18.5
2.6 to 3.4
Phosphorus (P), % 0 to 0.0020
0
Silver (Ag), % 0
21.4 to 22.6
Zinc (Zn), % 0 to 0.0010
0
Residuals, % 0
0 to 0.3