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Silverphos 6HP Technical Data


Silverphos 6HP is a low cost brazing filler metal suitable for joining copper to copper and copper to copper alloys where critical impact or vibration stresses are no encountered in service. It should only be used on assemblies where good fit-up can be maintained.

Brazing Characteristics

Silverphos 6HP is a copper-rich, intermediate temperature, brazing filler metal 

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. 


Silverphos 6HP alloy conforms to: American Welding Society (AWS) A5.8/A5.8M BCuP-4

Available Forms

Wire, strip, limited engineered preforms, limited specialty preforms per customer specification, powder and paste. 

Compare With

  • AWS: BCuP-4
  • Lucas: Sil-Fos 6
  • UNS: C55283


  • Brazing Temperature Range High: 1425 F / 774 C
  • Brazing Temperature Range Low: 1375 F / 746 C
  • Liquidus: 1325 F / 718 C
  • Solidus: 1190 F / 643 C



  • Cu: 86.75%
  • P: 7.25%
  • Ag: 6%

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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