# AWS BAg-35 (P07351) Filler Metal

AWS BAg-35 is a silver-based filler metal for brazing. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. BAg-35 is the AWS designation for this material. P07351 is the UNS number.

It has a fairly high heat capacity and a fairly low density among silver-based braze fillers.

The graph bars on the material properties cards below compare AWS BAg-35 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 10 ^{6} psi*

Poisson's Ratio

0.32

Shear Modulus

34 *GPa* 5.0 *x 10 ^{6} psi*

Tensile Strength: Ultimate (UTS)

170 *MPa* 25 *x 10 ^{3} psi*

## Thermal Properties

Brazing Temperature

750 to 840 *°C* 1390 to 1550 *°F*

Latent Heat of Fusion

140 *J/g*

Melting Completion (Liquidus)

750 *°C* 1390 *°F*

Melting Onset (Solidus)

690 *°C* 1270 *°F*

Specific Heat Capacity

330 *J/kg-K* 0.080 *BTU/lb-°F*

Thermal Expansion

21 *µm/m-K*

## Otherwise Unclassified Properties

Density

8.7 *g/cm ^{3}* 540

*lb/ft*

^{3}Embodied Carbon

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

Embodied Energy

550 *MJ/kg* 240 *x 10 ^{3} BTU/lb*

## Common Calculations

Stiffness to Weight: Axial

5.8 *points*

Stiffness to Weight: Bending

17 *points*

Strength to Weight: Axial

5.4 *points*

Strength to Weight: Bending

7.8 *points*

Thermal Shock Resistance

6.4 *points*

## Alloy Composition

Ag | 34 to 36 | |

Zn | 31 to 35 | |

Cu | 31 to 33 | |

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