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AWS BVAu-4 vs. AWS BAg-4

Both AWS BVAu-4 and AWS BAg-4 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-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
91
Poisson's Ratio 0.4
0.33
Shear Modulus, GPa 41
34
Tensile Strength: Ultimate (UTS), MPa 190
150

Thermal Properties

Brazing Temperature, °C 950 to 1000
740 to 900
Latent Heat of Fusion, J/g 100
140
Melting Completion (Liquidus), °C 950
780
Melting Onset (Solidus), °C 950
670
Specific Heat Capacity, J/kg-K 190
330
Thermal Expansion, µm/m-K 14
21

Otherwise Unclassified Properties

Density, g/cm3 17
8.9

Common Calculations

Stiffness to Weight: Axial, points 3.6
5.7
Stiffness to Weight: Bending, points 9.3
17
Strength to Weight: Axial, points 3.0
4.7
Strength to Weight: Bending, points 4.2
7.1
Thermal Shock Resistance, points 8.7
5.7

Alloy Composition


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Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0
Copper (Cu), % 0
29 to 31
Gold (Au), % 81.5 to 82.5
0
Lead (Pb), % 0 to 0.0020
0
Nickel (Ni), % 17.5 to 18.5
1.5 to 2.5
Phosphorus (P), % 0 to 0.0020
0
Silver (Ag), % 0
39 to 41
Zinc (Zn), % 0 to 0.0010
26 to 30
Residuals, % 0
0 to 0.15