# AWS BAg-2 (P07350) Filler Metal

AWS BAg-2 is a silver-based filler metal for brazing. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. BAg-2 is the AWS designation for this material. P07350 is the UNS number.

It has a moderately high tensile strength among silver-based braze fillers. In addition, it has a fairly low melting temperature and a moderately low density.

The graph bars on the material properties cards below compare AWS BAg-2 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 10 ^{6} psi*

Poisson's Ratio

0.32

Shear Modulus

31 *GPa* 4.5 *x 10 ^{6} psi*

Tensile Strength: Ultimate (UTS)

180 *MPa* 26 *x 10 ^{3} psi*

## Thermal Properties

Brazing Temperature

700 to 840 *°C* 1300 to 1550 *°F*

Latent Heat of Fusion

130 *J/g*

Melting Completion (Liquidus)

700 *°C* 1300 *°F*

Melting Onset (Solidus)

610 *°C* 1120 *°F*

Specific Heat Capacity

310 *J/kg-K* 0.073 *BTU/lb-°F*

Thermal Expansion

22 *µm/m-K*

## Otherwise Unclassified Properties

Density

8.9 *g/cm ^{3}* 560

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

550 *MJ/kg* 230 *x 10 ^{3} BTU/lb*

## Common Calculations

Stiffness to Weight: Axial

5.1 *points*

Stiffness to Weight: Bending

16 *points*

Strength to Weight: Axial

5.6 *points*

Strength to Weight: Bending

7.9 *points*

Thermal Shock Resistance

7.0 *points*

## Alloy Composition

Ag | 34 to 36 | |

Cu | 25 to 27 | |

Zn | 19 to 23 | |

Cd | 17 to 19 | |

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