Menu (ESC)

AWS BVAg-0 (P07017) Vacuum Service Filler Metal

AWS BVAg-0 is a silver-based filler metal for brazing. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. BVAg-0 is the AWS designation for this material. P07017 is the UNS number.

It has the lowest heat capacity among silver-based braze fillers. In addition, it has a very high melting temperature and the lowest tensile strength.

The graph bars on the material properties cards below compare AWS BVAg-0 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.

Thermal Properties

Brazing Temperature

960 to 1040 °C 1760 to 1900 °F

Latent Heat of Fusion

110 J/g

Melting Completion (Liquidus)

960 °C 1760 °F

Melting Onset (Solidus)

960 °C 1760 °F

Specific Heat Capacity

240 J/kg-K 0.056 BTU/lb-°F

Thermal Expansion

20 µm/m-K

Other Material Properties


10 g/cm3 650 lb/ft3

Elastic (Young's, Tensile) Modulus

71 GPa 10 x 106 psi

Poisson's Ratio


Shear Modulus

26 GPa 3.8 x 106 psi

Tensile Strength: Ultimate (UTS)

130 MPa 19 x 103 psi

Common Calculations

Stiffness to Weight: Axial

3.8 points

Stiffness to Weight: Bending

13 points

Strength to Weight: Axial

3.4 points

Strength to Weight: Bending

5.4 points

Thermal Shock Resistance

6.6 points

Alloy Composition

Silver (Ag)Ag 99.95 to 100
Copper (Cu)Cu 0 to 0.050
Carbon (C)C 0 to 0.0050
Phosphorus (P)P 0 to 0.0020
Lead (Pb)Pb 0 to 0.0020
Zinc (Zn)Zn 0 to 0.0010
Cadmium (Cd)Cd 0 to 0.0010

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