Standard: WRC BUL 30

OXIDATION-RESISTANT BRAZING ALLOYS

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Scope:

During the period from June 30,1953 to Dec. 31,1954 some 117 experimental brazing alloys were prepared at the Handy and Harman research laboratories, and evaluated as possible candidates for joining heat-conducting metal fins to Inconel tubing for service at temperatures in the order of 1400 to 1600 F where oxidation resistance oP the joint was mandatory. Alloys of gold-nickel-chromium, and palladium-nickel base alloys with chromium and silicon were developed which can be used to join stainless steel to Inconel at brazing temperatures in the range of 1900 to 1950 F. The alloys can be torch brazed using flux, or used without flux in a protective atmosphere. The resulting joints resist oxidation at 1600 F service temperature. It is still possible that with further development palladiumnickel base alloys with silicon-phosphorus-boron additions can be produced which will braze in the temperature range from 1850 to 1900 F. The report also contains a note on graphite brazing.

Organization: Welding Research Council
Document Number: wrc bul 30
Publish Date: 1956-09-01
Page Count: 13
Available Languages: EN
DOD Adopted: NO
ANSI Approved: NO
Most Recent Revision: YES
Current Version: YES
Status: Active
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