# AWS BAg-5 (P07453) Filler Metal

AWS BAg-5 is a silver-based filler metal for brazing. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. BAg-5 is the AWS designation for this material. P07453 is the UNS number.

It has a moderately 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-5 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

88 *GPa* 13 *x 10 ^{6} psi*

Poisson's Ratio

0.33

Shear Modulus

33 *GPa* 4.8 *x 10 ^{6} psi*

Tensile Strength: Ultimate (UTS)

150 *MPa* 22 *x 10 ^{3} psi*

## Thermal Properties

Brazing Temperature

740 to 870 *°C* 1370 to 1600 *°F*

Latent Heat of Fusion

140 *J/g*

Melting Completion (Liquidus)

740 *°C* 1370 *°F*

Melting Onset (Solidus)

660 *°C* 1230 *°F*

Specific Heat Capacity

320 *J/kg-K* 0.076 *BTU/lb-°F*

Thermal Expansion

21 *µm/m-K*

## Otherwise Unclassified Properties

Density

9.0 *g/cm ^{3}* 560

*lb/ft*

^{3}Embodied Carbon

44 *kg CO _{2}/kg material*

Embodied Energy

700 *MJ/kg* 300 *x 10 ^{3} BTU/lb*

## Common Calculations

Stiffness to Weight: Axial

5.4 *points*

Stiffness to Weight: Bending

16 *points*

Strength to Weight: Axial

4.6 *points*

Strength to Weight: Bending

6.9 *points*

Thermal Shock Resistance

5.9 *points*

## Alloy Composition

Ag | 44 to 46 | |

Cu | 29 to 31 | |

Zn | 23 to 27 | |

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