Materials E-Guide
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Amdry 780 is a nickel-based, chromium-free, braze filler metal with a composition of AWS BNi-3 and AMS 4778 (grade 140F). Its relatively low melting temperature makes it a good candidate when the braze temperature has to be kept low, and its excellent ductility makes it a good choice for applications that undergo stress in service. Braze in vacuum, argon or dry hydrogen atmospheres. Amdry 780 is available as a powder or paste. It is available as a customized tape on request.
Characteristics
| Material type | Brazing Powder |
|---|---|
| Product form | Powder |
| Material safety datasheet number | 50-1039; 50-1097; 50-1106; 50-1119 |
| Achieved surface function primary |
Dimensional Restoration |
| Suitable for service environmen |
Combustion/Flue Gas |
| Recommanded brazing range (min) | 1010 |
| Recommanded brazing range (max) | 1177 |
| Brazing gap size range (min) | 0.01 |
| Brazing gap size range (max) | 0.1 |
| Liquidus temp. | 1038 |
| Solidus temp. | 982 |
| Base composition | Nickel |
| Nominal chemistry | Ni 4.5Si 3.2B |
| Customer specification approved |
AWS A5.8 BNi-3, 140F Honeywell EMS 54752, Type I NOV Wellbore Technologies DMS 5505 National Oilwell Varco FCMS-040 Rolls-Royce plc MSRR 9500/114 Rolls-Royce plc MSRR 9500/114T (Tape) SAE International AMS 4778, 140F |
| Recommended process technology |
Brazing |
| Datasheet number | DSM-0284 |