AWS BAu-6 (P00700) Filler Metal
AWS BAu-6 is a gold-based filler metal for brazing. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. BAu-6 is the AWS designation for this material. P00700 is the UNS number.
The graph bars on the material properties cards below compare AWS BAu-6 to: gold-based braze fillers (top), all alloys in the same category (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Thermal Properties
Brazing Temperature
1050 to 1120 °C 1910 to 2050 °F
Latent Heat of Fusion
120 J/g
Melting Completion (Liquidus)
1050 °C 1910 °F
Melting Onset (Solidus)
1010 °C 1840 °F
Specific Heat Capacity
210 J/kg-K 0.049 BTU/lb-°F
Thermal Expansion
13 µm/m-K
Other Material Properties
Density
16 g/cm3 1030 lb/ft3
Elastic (Young's, Tensile) Modulus
120 GPa 17 x 106 psi
Poisson's Ratio
0.39
Shear Modulus
43 GPa 6.2 x 106 psi
Tensile Strength: Ultimate (UTS)
190 MPa 28 x 103 psi
Common Calculations
Stiffness to Weight: Axial
4.0 points
Stiffness to Weight: Bending
10 points
Strength to Weight: Axial
3.2 points
Strength to Weight: Bending
4.5 points
Thermal Shock Resistance
8.5 points
Alloy Composition
| Au | 69.5 to 70.5 | |
| Ni | 21.5 to 22.5 | |
| Pd | 7.5 to 8.5 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
AWS A5.8: Specification for Filler Metals for Brazing and Braze Welding