| Silvaloy 604 (VTG) Grade 1 is a silver base braze filler metal used in making of low temperature seals in vacuum tube components. This product is often used in brazing of ferrous and non-ferrous alloys in a controlled atmosphere or vacuum furnace applications without the use of flux. Silvaloy 604 (VTG) is recommended for brazing of heat exchanges exposed to salt water in marine environment. Salt water exposure may cause dezincification in braze alloys containing zinc, particularly in joints involving copper-nickel tubing. Silvaloy 604 (VTG) is a low temperature, low vapor pressure braze filler metal formulated to meet the need for a composition free from volatile constituents, particularly essential in the brazing of vacuum tubes. Silvaloy 603 can be used where low volatiles is not a requirement. Silvaloy 604 (VTG) filler metal can be used successfully to braze in hydrogen atmospheres without the use of flux. The tin content of this filler metal improves its wetting characteristics on ferrous base alloys over in comparison to binary silver copper braze filler metals. Available forms: Wire, strip, engineered preforms, specialty preforms, powder and paste. Information provided by Lucas-Milhaupt. |
| AMS 4773; Fed QQ-B-654 BAg-18 |
