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AWS BVAu-8 vs. AWS BVAg-30

Both AWS BVAu-8 and AWS BVAg-30 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition.

For each property being compared, the top bar is AWS BVAu-8 and the bottom bar is AWS BVAg-30.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
86
Poisson's Ratio 0.42
0.36
Shear Modulus, GPa 36
31
Tensile Strength: Ultimate (UTS), MPa 140
170

Thermal Properties

Brazing Temperature, °C 1240 to 1270
810 to 930
Latent Heat of Fusion, J/g 71
140
Melting Completion (Liquidus), °C 1240
810
Melting Onset (Solidus), °C 1200
810
Specific Heat Capacity, J/kg-K 140
280
Thermal Expansion, µm/m-K 14
19

Otherwise Unclassified Properties

Density, g/cm3 19
10

Common Calculations

Stiffness to Weight: Axial, points 3.0
4.7
Stiffness to Weight: Bending, points 8.3
14
Strength to Weight: Axial, points 2.1
4.7
Strength to Weight: Bending, points 3.2
6.7
Thermal Shock Resistance, points 7.1
7.6

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0 to 0.0010
Carbon (C), % 0 to 0.0050
0 to 0.0050
Copper (Cu), % 0
25.5 to 28.5
Gold (Au), % 91 to 93
0
Lead (Pb), % 0 to 0.0020
0 to 0.0020
Palladium (Pd), % 7.0 to 9.0
4.5 to 5.5
Phosphorus (P), % 0 to 0.0020
0 to 0.0020
Silver (Ag), % 0
67 to 69
Zinc (Zn), % 0 to 0.0010
0 to 0.0010