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Silver Braze 25Sn2

Silver Braze 25Sn2 Tehcnical Data


The principal uses of Silver Braze 25Sn2 filler metal are for joining copper, brass, nickel-silver, bronze, steel and stainless steel. 

Brazing Characteristics

Silver Braze 25Sn2 is a cadmium-free, low silver, intermediate temperature brazing filler metal. The long melting range of this filler metal is useful when wide gap joints are being brazed. Product shows good wicking. Flux is recommended for use with this filler metal. The oprtimal brazing range for Silver Braze 25Sn2 is 1435-1600F (780-870C)

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. Silver Braze 25Sn2 butt joints have been brazed and tested for tensile strength at room temperature, on the below metals and exhibited the following results:

  Tensile Strength (lbs/in2)
1020 Carbon Steel  73,400
1095 Carbon Steel 62,500 
304 Stainless Steel 60,500 


Silver Braze 25Sn2 conforms to American Welding Society (AWS) A5.8/A5.8M BAg-37

Available Forms

Silver Braze 25Sn2 is available in wire, strip, engineered preforms, specialty preforms per customer specification, powder and paste.


Silver Braze 25 Sn2 is typically used for joints not requiring high impact strength nor ductility. This brazing alloy is a good alternative to cadmium-containing brazes.

Compare With

  • AWS: BAg-37
  • EN: AG 108
  • Lucas: Silvaloy 255
  • PI: Silver Braze 25Sn2
  • UNS: P07523


  • Brazing Temperature Range High: 1535 F / 835 C
  • Brazing Temperature Range Low: 1485 F / 807 C
  • Liquidus: 1435 F / 779 C
  • Solidus: 1270 F / 688 C



  • Cu: 40%
  • Zn: 33%
  • Ag: 25%
  • Sn: 2%

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.

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