This family of brazing alloys is widely used for the joining of copper and copper alloys. Phosphorous is a temperature depressant and acts as a fluxing agent, while the silver influences the fluidity and improves ductility of the brazing alloy. Refer to the Performance Chart for information on how the silver and phosphorous content affect brazing alloy flow.


Melting Pt. 1190 ºF
645 ºC
Flow Pt. 1300 ºF
705 ºC
MBT1 1450
AWS A5.8 BCuP-7
Preform Options Custom Designs 
Resale Options Paste 

Phsycial Constants

Color Light Copper


Download SDS Sheet

Compare With

  • AWS: BCuP-7


  • Brazing Temperature Range High: 1500 F / 816 C
  • Brazing Temperature Range Low: 1300 F / 704 C
  • Liquidus: 1420 F / 771 C
  • Solidus: 1190 F / 643 C



  • Cu: 88.25%
  • P: 6.75%
  • Ag: 5%

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