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AWS BVAu-4 vs. AWS BAg-20

Both AWS BVAu-4 and AWS BAg-20 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. There are 16 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 AWS BVAu-4 and the bottom bar is AWS BAg-20.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
93
Poisson's Ratio 0.4
0.32
Shear Modulus, GPa 41
35
Tensile Strength: Ultimate (UTS), MPa 190
160

Thermal Properties

Brazing Temperature, °C 950 to 1000
770 to 900
Latent Heat of Fusion, J/g 100
150
Melting Completion (Liquidus), °C 950
770
Melting Onset (Solidus), °C 950
680
Specific Heat Capacity, J/kg-K 190
340
Thermal Expansion, µm/m-K 14
21

Otherwise Unclassified Properties

Density, g/cm3 17
8.6

Common Calculations

Stiffness to Weight: Axial, points 3.6
6.0
Stiffness to Weight: Bending, points 9.3
17
Strength to Weight: Axial, points 3.0
5.1
Strength to Weight: Bending, points 4.2
7.6
Thermal Shock Resistance, points 8.7
5.9

Alloy Composition


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Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0
Copper (Cu), % 0
37 to 39
Gold (Au), % 81.5 to 82.5
0
Lead (Pb), % 0 to 0.0020
0
Nickel (Ni), % 17.5 to 18.5
0
Phosphorus (P), % 0 to 0.0020
0
Silver (Ag), % 0
29 to 31
Zinc (Zn), % 0 to 0.0010
30 to 34
Residuals, % 0
0 to 0.15