AWS BAg-18 (P07600) Filler Metal
AWS BAg-18 is a silver-based filler metal for brazing. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. BAg-18 is the AWS designation for this material. P07600 is the UNS number.
It has a very low melting temperature among the silver-based braze fillers in the database.
The graph bars on the material properties cards below compare AWS BAg-18 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
0.36
Shear Modulus
30 GPa 4.4 x 106 psi
Tensile Strength: Ultimate (UTS)
170 MPa 25 x 103 psi
Thermal Properties
Brazing Temperature
720 to 980 °C 1320 to 1800 °F
Latent Heat of Fusion
130 J/g
Melting Completion (Liquidus)
720 °C 1320 °F
Melting Onset (Solidus)
600 °C 1120 °F
Specific Heat Capacity
280 J/kg-K 0.067 BTU/lb-°F
Thermal Expansion
19 µm/m-K
Otherwise Unclassified Properties
Density
9.7 g/cm3 610 lb/ft3
Embodied Carbon
59 kg CO2/kg material
Embodied Energy
930 MJ/kg 400 x 103 BTU/lb
Common Calculations
Stiffness to Weight: Axial
4.7 points
Stiffness to Weight: Bending
15 points
Strength to Weight: Axial
4.9 points
Strength to Weight: Bending
7.0 points
Thermal Shock Resistance
7.7 points
Alloy Composition
| Ag | 59 to 61 | |
| Cu | 28.4 to 31.5 | |
| Sn | 9.5 to 10.5 | |
| 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