Materials E-Guide
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Amdry 7804 is a nickel-based, chromium-free, braze filler metal with a tightly controlled composition that meets of AWS BNi-3 and AMS 4778 (grade 140F). Its relatively low melting temperature makes it good candidate when a lower braze temperature is needed. Excellent ductility makes it a good choice for applications that undergo stress in service. Braze in vacuum, argon or dry hydrogen atmospheres. Amdry 7804 is available as a powder. It is available as a paste or 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 3B |
| Customer specification approved |
AWS A5.8 BNi-3, 140F GE B50TF205, Class A Honeywell Allied Signal EMS 54752 Type I NOV Wellbore Technologies DMS 5505 National Oilwell Varco FCMS-040 Rolls-Royce plc MSRR 9500/114 SAE International AMS 4778, 140F Snecma PrEN 3927 Snecma PrEN 3928 (Tape) |
| Recommended process technology |
Brazing |
| Datasheet number | DSM-0284 |