Copper and phosphorous, “phos-copper”, brazing alloy offering excellent liquidity for tight fitting joints. Used extensively in the Heating, Ventilating and Air Conditioning (HVAC) industry to make preform brazing rings for evaporators/condensers. Bellman-Melcor has supplied over two billion brazing rings for this market.

Brazeit 0 is used for the brazing of copper and copper alloys, brass and bronze. It can also be used on silver, tungsten and molybdenum. It is primarily used for the brazing of copper-to-copper on vibration free joints. It is very effective for joining tight fitting copper pipe and tubing. Brazeit 0 should not be used on ferrous metals or copper alloys containing more than 10% nickel because of phosphorus embrittlement due to reactions with iron or nickel. #0 is extremely fluid at brazing temperatures and will penetrate joints with very little clearance. Best results are obtained with clearances of 0.001″ – 0.003″. Melting of #0 is virtually complete at 1350 ºF (732 ºC). Best results are obtained when brazing slightly above this temperature.


Melting Pt. 1310 ºF
710 ºC
Flow Pt. 1460 ºF
793 ºC
MBT1 1550
AWS A5.8 BCuP-2
QQ-B-650 BCuP-2
Preform Options Brazing Rings 
Custom Brazing 
Preform Designs 
Resale Options Brazing Rods 
Brazing wire 
Approx. Wire Length (BCuP/lb.) (BAg/Tr.oz) 1150 in @ 0.062 diameter 
4620 in @ 0.031 
diameter 510 in @ 0.093 diameter

Physical Constants

Solidus 1310 ºF
710 ºC
Liquidus 1460 ºF
793 ºC
Brazing Range 1350 to 1550 ºF
732 to 843 ºC
Specific Gravity 8.00
Density 4.17 T.oz./cu.in. 0.286 lb./cu.in
Electrical Conductivity 7.5 % IACS
Electrical Resistivity 23.2 Micro ohm-cm
Color Copper Yellow


The phosphorus content of #0 acts as a fluxing agent and no flux is necessary when brazing copper joints. However, when used with a copper alloy or one of the other brazeable metals, a brazing flux must be used to promote wetting, bonding, and flow throughout the joint. The flow point of Brazeit 0 is 1350 ºF (732 ºC).

Extensive flow, very fluid, recommended joint clearance .001" to .003" Used with copper, brass and bronze base metal.

Available Forms

Standard forms of Brazeit 0 are wire and preforms.

Safety Information

The operation and maintenance of brazing equipment or facility should conform to the provisions of American National Standard (ANSI) Z49.1, "Safety in Welding and Cutting." For more complete information refer to the Material Safety Data Sheet for #0.


Download SDS Sheet

Bellman-Melcor distinguishes itself as a provider of premium quality brazing alloys at industry competitive prices. Our extensive inventory of brazing and soldering alloys ensures that in most cases your order can be available for immediate delivery.

Compare With

  • AWS: BCuP-2


  • Brazing Temperature Range High: 1550 F / 843 C
  • Brazing Temperature Range Low: 1510 F / 821 C
  • Liquidus: 1460 F / 793 C
  • Solidus: 1310 F / 710 C



  • Cu: 92.75%
  • P: 7.25%

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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