Silver Braze 30
AWS: BAg-20
Silver Braze 30 is a general purpose, intermediate temperature brazing alloy for use on copper, brass, nickel-silver, bronze, steel and other nonferrous alloys melting above 1450F (765C). Uses include the brazing of nickel-silver hollow knife handles and electrical equipment. It is particularly adaptable to metal bath dip brazing of fine wires for radio, small transformer and electronics assembles because its flow point matches the fluid temperature of borax. Borax is used as a metal bath flux cover because it is less corrosive to ceramic pot linings.
Available Forms
Wire, strip, engineered preforms, specialty preforms per customer specification, powder and paste.
Characteristics
Silver Braze 30 is an intermediate temperature silver brazing alloy with a fairly long (160F/70C) melting range. This long melting range is helpful when wide gap joints are brazed and is useful in producing large joint fillets to reduce the notch effect on stressed assembles. Where the higher brazing temperature and characteristics of this alloy are permissible, the lower silver content affords a saving. Flus should be used with this alloy.
Properties
The properties of a brazed joint are dependent upon the base metal, joint design, metallurgical interaction between the base metal and filler metal. The results listed below were generated from brazed butt joints which were tested under standard room temperature conditions. Tensile Strength (lbs/in2) Copper: 30,000-35,000 Brass: 35,000-45,000 Nickel-Silver: 35,000-40,000 Elongation (%, 2” gage length) Copper: 15-25 Brass: 16-31 Nickel-Silver: 7-17
Specs
American Welding Society (AWS)
BAg-20
Solidus
1250 F / 677 C
Liquidus
1410 F / 766 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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