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AWS BVAg-32 vs. AWS BVAu-2

Both AWS BVAg-32 and AWS BVAu-2 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a modest 20% of their average alloy composition in common, which, by itself, doesn't mean much.

For each property being compared, the top bar is AWS BVAg-32 and the bottom bar is AWS BVAu-2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 93
100
Poisson's Ratio 0.37
0.4
Shear Modulus, GPa 34
36
Tensile Strength: Ultimate (UTS), MPa 180
150

Thermal Properties

Brazing Temperature, °C 950 to 980
890 to 1010
Latent Heat of Fusion, J/g 140
92
Melting Completion (Liquidus), °C 950
890
Melting Onset (Solidus), °C 900
890
Specific Heat Capacity, J/kg-K 270
180
Thermal Expansion, µm/m-K 17
15

Otherwise Unclassified Properties

Density, g/cm3 11
17

Common Calculations

Stiffness to Weight: Axial, points 4.9
3.3
Stiffness to Weight: Bending, points 14
9.1
Strength to Weight: Axial, points 4.7
2.4
Strength to Weight: Bending, points 6.7
3.6
Thermal Shock Resistance, points 8.0
7.1

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0 to 0.0010
Carbon (C), % 0 to 0.0050
0 to 0.0050
Copper (Cu), % 20 to 22
19.5 to 20.5
Gold (Au), % 0
79.5 to 80.5
Lead (Pb), % 0 to 0.0020
0 to 0.0020
Palladium (Pd), % 23 to 27
0
Phosphorus (P), % 0 to 0.0020
0 to 0.0020
Silver (Ag), % 53 to 55
0
Zinc (Zn), % 0 to 0.0010
0 to 0.0010