AWS BAg-1 (P07450) Filler Metal
AWS BAg-1 is a silver-based filler metal for brazing. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. BAg-1 is the AWS designation for this material. P07450 is the UNS number.
It has a fairly low melting temperature among the silver-based braze fillers in the database.
The graph bars on the material properties cards below compare AWS BAg-1 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
75 GPa 11 x 106 psi
Poisson's Ratio
0.33
Shear Modulus
28 GPa 4.1 x 106 psi
Tensile Strength: Ultimate (UTS)
170 MPa 25 x 103 psi
Thermal Properties
Brazing Temperature
620 to 760 °C 1140 to 1400 °F
Latent Heat of Fusion
110 J/g
Melting Completion (Liquidus)
620 °C 1140 °F
Melting Onset (Solidus)
610 °C 1120 °F
Specific Heat Capacity
280 J/kg-K 0.067 BTU/lb-°F
Thermal Expansion
23 µm/m-K
Otherwise Unclassified Properties
Density
9.2 g/cm3 570 lb/ft3
Embodied Carbon
44 kg CO2/kg material
Embodied Energy
690 MJ/kg 300 x 103 BTU/lb
Common Calculations
Stiffness to Weight: Axial
4.6 points
Stiffness to Weight: Bending
15 points
Strength to Weight: Axial
5.1 points
Strength to Weight: Bending
7.4 points
Thermal Shock Resistance
7.0 points
Alloy Composition
| Ag | 44 to 46 | |
| Cd | 23 to 25 | |
| Zn | 14 to 18 | |
| Cu | 14 to 16 | |
| 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