BRAZING ALLOYS WITH LOW CONTENT OF SILVER
 
 

APPLICATIONS: This alloy with low price is widely used to weld copper and all of its alloys such as bronze and brass at low temperatures. It makes strong joints in narrow spaces (0.002”) through ample connections in short times of production. Reducing heating cycles with great flow and penetration, it leaves clean and compact joints without pores.

 


This kind of weld is not suitable for ferrous or nickel alloys, the result would be a brittle weld.

USES: Ideal for copper or bronze pipeline joining, of great application on refrigeration, air conditioning, contactors and electrical engines, aqueducts, furniture and lamps.

OTHER USES: It has great fluidity and penetration at low temperatures on “T” unions. As well, great electrical and thermal conductivity as well resistance to the oxidation.
It is Inexpensive, improving the production capacity due to its short heating cycles, reducing excessive times and gas consume. Does not leave welding waste due to its flow and penetration power, avoiding post checking and time wastes.

PROCEDURE: This weld is a self-flux with copper-copper. It flows freely between the spaces to join. It is suitable to use “Flux Silvering” in order to join other kind of copper alloys such as bronze and brass
It is important to clean the surfaces and then the alloys can be applied with an oxyacetylene welding torch of neutral flame without overheating the part this would segregate the metals of the alloy.
The parts must be heated uniformly to prevent the interruption of the fluidity of attraction. In addition, the filler alloy must be blown by the heat conduced through the base metal towards the union area keeping a distance of 2 inches between the spear of the flame and the base metal. It is not suitable to apply the fire directly on the weld.

PROPERTIES:

  • Low melting point: 650°C (1.190°F)
  • Excellent fluidity and capillary penetration.
  • Excellent mechanical resistance 70.000 P.S.I.
  • Self-flux with copper.
  • Excellent electrical and thermal conductibility.
  • Good resistance to corrosive.
  • Inexpensive.