Materials E-Guide
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Amdry 7701 is a nickel-based braze filler metal with a composition equivalent to AWS BNi-2 and AMS 4777 (grade 140C). Joints of Amdy 7701 have excellent corrosion resistance and strength, with good ductility and oxidation resistance. Use Amdry 7701 for medium size gaps where the joint depth is not extemely deep. Braze Amdry 7701 in vacuum furnaces or furnaces or atmospheres of argon or dry hydrogen. It is available as a powder. It can be ordered as a paste or customized tape on request.
Characteristics
| Material type | Brazing Powder |
|---|---|
| Product form | Powder |
| Material safety datasheet number | 50-1038; 50-1095; 50-1104; 50-1117 |
| 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) | 0.08 |
| Brazing gap size range (max) | 0.12 |
| Liquidus temp. | 999 |
| Solidus temp. | 971 |
| Base composition | Nickel |
| Nominal chemistry | Ni 7Cr 4.5Si 3B 3Fe |
| Max. service temp. | 982 |
| Customer specification approved |
AWS A5.8 BNi-2, 140C GE B50TF204, Class A Rolls-Royce plc MSRR 9500/97 SAE International AMS 4777, 140C |
| Recommended process technology |
Brazing |
| Datasheet number | DSM-0337 |