AWS BAg-9 (P07650) Filler Metal
AWS BAg-9 is a silver-based filler metal for brazing. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. BAg-9 is the AWS designation for this material. P07650 is the UNS number.
It has the highest embodied energy and a fairly low tensile strength among silver-based braze fillers.
The graph bars on the material properties cards below compare AWS BAg-9 to: silver-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.
Mechanical Properties
Elastic (Young's, Tensile) Modulus
82 GPa 12 x 106 psi
Poisson's Ratio
0.35
Shear Modulus
31 GPa 4.4 x 106 psi
Tensile Strength: Ultimate (UTS)
140 MPa 20 x 103 psi
Thermal Properties
Brazing Temperature
720 to 840 °C 1320 to 1550 °F
Latent Heat of Fusion
130 J/g
Melting Completion (Liquidus)
720 °C 1320 °F
Melting Onset (Solidus)
670 °C 1240 °F
Specific Heat Capacity
290 J/kg-K 0.069 BTU/lb-°F
Thermal Expansion
20 µm/m-K
Otherwise Unclassified Properties
Density
9.6 g/cm3 600 lb/ft3
Embodied Energy
980 MJ/kg 420 x 103 BTU/lb
Common Calculations
Stiffness to Weight: Axial
4.8 points
Stiffness to Weight: Bending
15 points
Strength to Weight: Axial
4.1 points
Strength to Weight: Bending
6.3 points
Thermal Shock Resistance
6.0 points
Alloy Composition
| Ag | 64 to 66 | |
| Cu | 19 to 21 | |
| Zn | 13 to 17 | |
| 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