AWS BAg-13 (P07540) Filler Metal
AWS BAg-13 is a silver-based filler metal for brazing. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. BAg-13 is the AWS designation for this material. P07540 is the UNS number.
It has a moderately high tensile strength and a moderately high melting temperature among silver-based braze fillers.
The graph bars on the material properties cards below compare AWS BAg-13 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
91 GPa 13 x 106 psi
Poisson's Ratio
0.35
Shear Modulus
34 GPa 4.9 x 106 psi
Tensile Strength: Ultimate (UTS)
180 MPa 26 x 103 psi
Thermal Properties
Brazing Temperature
860 to 980 °C 1570 to 1800 °F
Latent Heat of Fusion
150 J/g
Melting Completion (Liquidus)
860 °C 1570 °F
Melting Onset (Solidus)
720 °C 1320 °F
Specific Heat Capacity
310 J/kg-K 0.073 BTU/lb-°F
Thermal Expansion
19 µm/m-K
Otherwise Unclassified Properties
Density
9.7 g/cm3 600 lb/ft3
Embodied Carbon
52 kg CO2/kg material
Embodied Energy
820 MJ/kg 350 x 103 BTU/lb
Common Calculations
Stiffness to Weight: Axial
5.2 points
Stiffness to Weight: Bending
16 points
Strength to Weight: Axial
5.2 points
Strength to Weight: Bending
7.3 points
Thermal Shock Resistance
7.5 points
Alloy Composition
| Ag | 53 to 55 | |
| Cu | 37.4 to 42.5 | |
| Zn | 4.0 to 6.0 | |
| Ni | 0.5 to 1.5 | |
| 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