SilverAlloy A-69Ti-Active
Nominal Chemical
Composition
INTRODUCTION
Aufhauser SilverAlloy A-69Ti-Active is an active, brazing alloy that promotes wetting and good capillary action on several surfaces that would otherwise be difficult to join by brazing. The active components of this alloy promote wetting on, for example, ceramics and aluminum oxides (sapphire).
APPLICATIONS
Brazing with Aufhauser SilverAlloy A-69Ti-Active provides a reliable method of bonding ceramic to metals (including stainless steels) as well as bonding metal oxides (like sapphire).
GENERAL INFORMATION
Chemical Composition (wt %)| Silver | Copper | Titanium |
|---|---|---|
| 68.8 (± 1.0) | 26.7 (± 1.0) | 4.5 (± 0.5) |
ADDITIONAL INFORMATION
PHYSICAL and MECHANICAL PROPERTIES*
| Solidus | 1435°F | 780°C |
| Liquidus | 1650°F | 900°C |
| Recommended Brazing Temperature | 1725-1775°F | 940-968°C |
| Density | 5.0 TOz/in3 | 9.4 g/cm3 |
| Thermal Conductivity | 127 BTU h-1ft-1 °F-1 | 219 W m-1 °K-1 |
| Thermal Expansion Coefficient (R.T. - 500°C) | 10.3 × 10-6 °F-1 | 18.5 × 10-6 °C-1 |
| Electrical Resistivity | 20 Ω CM ft | 34 × 10-9 Ω m |
| Electrical Conductivity | 0.049 Ω-1 CM-1 ft | 29 × 106 Ω-1m-1 |
| Young’s Modulus | 12 × 106 psi | 85 GPa |
| Poisson’s Ratio | 0.36 | |
| Yield Strength | 42,400 psi | 292 MPa |
| Ultimate Tensile Strength | 49,200 psi | 339 MPa |
| Elongation (2 in. gage section) | 28% |
* Aufhauser A-69Ti-Active is a composite material. The above properties apply to the alloy before it is used in the brazing process.