GE B50TF207
AWS: BNi-9
BNi-9 is a eutectic nickel-based brazing alloy suitable for brazing nickel, super alloys, stainless steels and other assemblies which require good joint strength at high temperatures with excellent corrosion and oxidation resistance. Some of the applications for this filler metal are highly stressed sheet metal components, jet engine parts, and assemblies used in corrosive conditions.
Available Forms
Powder and paste
Characteristics
Due to its eutectic nature BNi-9 exhibits excellent flowability and is therefore a good choice for narrow, deep joints where tighter clearances are maintained. Tighter joint clearances along with the use of a minimal amount of braze alloy will limit potential erosion of the base components. When wetting to base metals which contain higher Al or Ti content in an inert atmosphere, nickel plating of the base metal is recommended. Dry reducing atmospheres or inert atmospheres are also recommended. When joining thinner, less ductile assemblies brazing should be conducted at the lower end of the braze range so along with fast heating and cooling cycles so as so minimize distortion.
Properties
The properties of a brazed joint are dependent upon the base metal, joint design and brazing technique. For atmospheric brazing the recommended radial joint clearance for nickel-base alloys fall within .000-.002” range for atmosphere brazing.
Specs
American Welding Society (AWS)
BNi-9
Solidus
1930 F / 1055 C
Liquidus
1930 F / 1055 C
Disclaimer
The information and recommendations contained in this publication have been provided without charge & compiled from sources believed to be reliable and to represent the best information available on the subject at the time of issue. No warranty, guarantee, or representation is made by the Prince and Izant Company, Inc. as to the absolute correctness or sufficiency of any representation contained in this and other publications; Prince and Izant Company, Inc. assumes no responsibility in connection therewith; nor can it be assumed that all acceptable safety measures are contained in this (and other publications, or that other or additional measures may not be required under particular or exceptional conditions or circumstances.
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