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AWS BAu-3 vs. AWS BVAg-32

Both AWS BAu-3 and AWS BVAg-32 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much.

For each property being compared, the top bar is AWS BAu-3 and the bottom bar is AWS BVAg-32.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
93
Poisson's Ratio 0.37
0.37
Shear Modulus, GPa 41
34
Tensile Strength: Ultimate (UTS), MPa 220
180

Thermal Properties

Brazing Temperature, °C 1030 to 1090
950 to 980
Latent Heat of Fusion, J/g 160
140
Melting Completion (Liquidus), °C 1030
950
Melting Onset (Solidus), °C 970
900
Specific Heat Capacity, J/kg-K 300
270
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Density, g/cm3 13
11

Common Calculations

Stiffness to Weight: Axial, points 5.0
4.9
Stiffness to Weight: Bending, points 13
14
Strength to Weight: Axial, points 4.9
4.7
Strength to Weight: Bending, points 6.4
6.7
Thermal Shock Resistance, points 8.7
8.0

Alloy Composition


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Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.0050
Copper (Cu), % 60.9 to 63
20 to 22
Gold (Au), % 34.5 to 35.5
0
Lead (Pb), % 0
0 to 0.0020
Nickel (Ni), % 2.5 to 3.5
0
Palladium (Pd), % 0
23 to 27
Phosphorus (P), % 0
0 to 0.0020
Silver (Ag), % 0
53 to 55
Zinc (Zn), % 0
0 to 0.0010
Residuals, % 0 to 0.15
0