Gold Braze 25
GB25 is typically used for joining PCD to steel or carbide in tooling applications. It may also exhibit successful wetting and joining for a variety of other surfaces due to its diverse composition.
Available Forms
Strip, engineered preforms, specialty preforms, powder and paste
Characteristics
GB25 can be brazed by a variety of different processes including induction and atmospheric furnace brazing. It is important to ensure that the base components are properly cleaned prior to the application of the braze alloy. A joint clearance of 0.002-0.004 in. is recommended for brazing depending on base alloy type and joint configuration. The precious metal content of GB25 offers improved corrosion resistance and due to its narrow melt range GB25 exhibits free flowing characteristics.
Properties
The properties of a brazed joint are dependent upon the base metal, joint design and brazing technique. For controlled atmosphere brazing or vacuum brazing the recommended radial joint clearance for gold base alloys fall within 0-0.002 in. (0-0.05 mm)
Specs
Solidus
1788 F / 970 C
Liquidus
1855 F / 1013 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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