Silver Braze 92.5
Silver Braze 92.5 Technical Data
Silver Braze 92.5 has been used in the brazing of honeycomb panel sections. It can be used for general purpose furnace brazing of stainless steels where flux must be avoided.
Silver Braze 92.5 is lithium modified sterling silver, designed primarily for fluxless furnace brazing of stainless steels. This alloy has been widely used for brazing honeycomb airframe structures made of precipitation hardening stainless steels. The use of Silver Braze 92.5 permits taking advantage of the maximum panel strength afforded by free node flow. This alloy is not suitable for torch brazing in air but must be used in hydrogen or inert atmosphere of low dew point (-170F/-55C or drier). Argon is the most commonly used inert gas.
Properties of Brazed Joints
The properties of a brazed joint are dependent upon numerous factors including base metal properties, joint design, metallurgical interaction between the base metal and the filler metal. Joints brazed with Silver Braze 92.5 have been used for applications where operating temperatures where operating temperatures were intermittently as high as 900F (480C). When continuous elevated temperature exposure to oxidizing conditions is to be expecting (1000 hours or more), the maximum operating temperature should be reduced to 500F (260C). Joints made on heat resistant alloys with these filler metals are much more resistant to interface corrosion than flux brazed joints. Final acceptance should be based on tests made under the anticipated service conditions.
Silver Braze 92.5 conforms to American Welding Society (AWS) A5.8/A5.8M BAg-19
Wire, strip, engineered preforms, specialty preforms per customer specification, powder and paste.
- AMS: 4767
- AWS: BAg-19
- Lucas: Lithobraze 925
- PI: Silver Braze 92.5
- UNS: P07925
- Brazing Temperature Range High: 1735 F / 946 C
- Brazing Temperature Range Low: 1685 F / 918 C
- Liquidus: 1635 F / 891 C
- Solidus: 1400 F / 760 C
- Ag: 92.5%
- Cu: 7.27%
- Li: 0.23%
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. The company and product names referenced herein are for identification purposes only. All trademarks and registered trademarks are the property of their respective owners.