AWS BAg-22 (P07490) Filler Metal
AWS BAg-22 is a silver-based filler metal for brazing. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. BAg-22 is the AWS designation for this material. P07490 is the UNS number.
It has a fairly low tensile strength and a moderately high heat capacity among silver-based braze fillers.
The graph bars on the material properties cards below compare AWS BAg-22 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
96 GPa 14 x 106 psi
Poisson's Ratio
0.33
Shear Modulus
36 GPa 5.2 x 106 psi
Tensile Strength: Ultimate (UTS)
140 MPa 20 x 103 psi
Thermal Properties
Brazing Temperature
700 to 1040 °C 1290 to 1900 °F
Latent Heat of Fusion
150 J/g
Melting Completion (Liquidus)
700 °C 1290 °F
Melting Onset (Solidus)
680 °C 1260 °F
Specific Heat Capacity
320 J/kg-K 0.077 BTU/lb-°F
Thermal Expansion
21 µm/m-K
Otherwise Unclassified Properties
Density
9.0 g/cm3 560 lb/ft3
Embodied Carbon
48 kg CO2/kg material
Embodied Energy
760 MJ/kg 330 x 103 BTU/lb
Common Calculations
Stiffness to Weight: Axial
5.9 points
Stiffness to Weight: Bending
17 points
Strength to Weight: Axial
4.3 points
Strength to Weight: Bending
6.6 points
Thermal Shock Resistance
5.1 points
Alloy Composition
| Ag | 48 to 50 | |
| Zn | 21 to 25 | |
| Cu | 15 to 17 | |
| Mn | 7.0 to 8.0 | |
| Ni | 4.0 to 5.0 | |
| 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