Copper Brazing Rods

The use of copper brazing is for when greater joint strength is needed or for systems that operate at 350 degrees or higher. Typical uses include: Fire protection. Air-conditioning and refrigeration.

Copper Brazing Rods are of 2 types

  1. BCup
  2. BAG

BCup Copper Brazing Rods

_MG_0498

The most commonly used brazing filler metal types, used to join copper tube and fittings fall into two distinct categories: BCuP Alloy (pronounced b-cup) – where the B stands for Brazing, Cu is the chemical symbol for Copper, and P is the chemical symbol for Phosphorous. BCuP series brazing filler metal has good elector conductivity at the joined points, good mechanical properties, and good anti-corrosion properties against acid and it has weakness for iron.

Technical details

Composition(%)         Temperature(℃)    
Item P AG CU Other Solidus Liquidus Brazing Temperature
BCup-2 6.8-7.5 – Rem 0.2 710 793 735-843
BCup-0.5S 6.8-7.2 0.3-0.7 Rem 0.2 703 845 735-846
BCup-1S 6.8-7.2 0.8-1.2 Rem 0.2 697 840 735-841
BCup-1.5S 6.8-7.2 1.3-1.7 Rem 0.2 686 835 730-835
BCup-6 6.8-7.2 1.8-2.2 Rem 0.2 645 790 730-815
BCup-3s 5.7-6.8 2.7-3.3 Rem 0.2 643 720 695-790
BCup-3 5.8-6.7 4.8-5.2 Rem 0.2 645 815 718-816
BCup-5 4.8-5.3 14.5-15.5 Rem 0.2 643 802 704-816
BCup-5a 5.5-6.3 18.5-17.5 Rem 0.2 640 790 700-810
BCup-5e 5.8-6.3 14.5-15.5 Rem 0.2 635 785 700-805

Products Available

Solbraze-BCup-2 (0% Silver) Copper Phosphorus Brazing Rod.

MG_0498-1

BCuP-2 Phos-Copper (BCuP-2) low cost alloy is suitable for most copper-to-copper or brass joints where good fit-up exists, and the assemblies are not subject to vibration or movement.  Developed primarily for use on copper, this alloy may also be used on other nonferrous copper base alloys.   By virtue of its phosphorus content, this product is self-fluxing on copper only applications.

Typical Applications:  Applications refrigeration units, electrical conductors, copper and brass fittings, air conditioning apparatus, copper and brass equipment

*Flux should be used when brazing brass or bronze with this product.

Solbraze-BCup-6 (2% Silver) Copper Phosphorus Brazing Rod

BCuP-6 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 not encountered in service.  It should be used on assemblies where good fit-up can be maintained.

Typical Applications:  Applications refrigeration units, electrical conductors, copper and brass fittings, air conditioning apparatus, copper and brass equipment

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Solbraze Copper Brazing Rods

Solbraze-BCup-6 (2% Silver) Copper - Zinc Phosphrous Brazing Rod.

Solbraze-BCup-6-rod

Copper-zinc brazing filler metals are mainly used in fast-heating brazing processes such as flame brazing, high frequency induction brazing and resistance brazing.

It is used to braze copper, copper alloys, steels, cast iron and cemented carbide.

Contaminants on the surface, such as grease and oxides must be removed thoroughly before brazing.

Addition of flux is necessary during brazing in order to obtain optimal brazed joints.

Copper Brazing (BAG)

We offer a wide range of cadmium/cadmium-free brazing alloys which have an excellent combination of melting range, capillary flow and mechanical properties. These alloys are recommended as economical alloys where the presence of cadmium is acceptable. Whereas we are also offering a range of cadmium free alloys, keeping in view the requirements of our end users, which mainly consist of food and beverage industry. These alloys are suitable for use on most ferrous and non-ferrous materials. We offer numerous material compositions for general purpose and specialty applications, which are available in strip, wire, rod or ring form.

Vibha Copper Rods

Technical details for Copper BAG

Composition(%)           Temperature(℃)    
Item Ag Cu Zn Cd Other Solidus Liquidus Brazing Temperature
BAg – 1 45 15 16 24   607 618 618-760
BAg – 1a 50 15.5 16.5 18   627 635 635-760
BAg – 2 35 26 21 18   607 702 702-843
BAg – 2a 30 27 23 20   607 710 710-843
BAg – 3 50 15.5 15.5 16 Ni3 632 688 688-816
BAg – 3a 48 15.5 16.5 14 Mi2, Mn4 610 660 660-790
BAg – 4 40 30 28 – Ni2 671 779 779-899
BAg – 5 45 30 25 – – 663 743 743-843
BAg – 6 50 34 16 – – 688 774 774-871
BAg – 7 56 22 17 – Sn5 618 652 652-760
BAg – 8 72 Rem – – – 779 779 779-899
BAg – 9 65 20 15 – – 671 718 718-843
BAg – 10 70 20 10 – – 691 738 738-843
BAg – 13 54 Rem 5 – Li1 718 857 857-968
BAg – 13a 56 Rem – – Li2 771 893 871-982
BAg – 18 60 Rem – – Sn10 602 718 718-843
BAg – 19 92.5 Rem – – Lio.2 760 891 877-982
BAg – 20 30 38 32 – – 677 766 766-871
BAg – 21 63 28.5 – – Ni2.5,Sn6 691 802 802-899
BAg – 22 49 16 23 – Ni4.5 680 699 699-830
BAg – 23 85 – – – MN15 960 970 970-1038
BAg – 24 50 20 28 – Ni2 660 750 750-843
BAg – 26 25 38 33 – Ni2,Mn2 705 800 800-870
BAg – 27 25 35 26.5 13.5 – 605 745 745-860
BAg – 28 40 30 28 – Sn2 649 710 710-860
BAg – 34 38 32 28 – Sn2 650 720 710-843
BAg – 35 35 32 33 – – 680 750 650-720
BAg-36 45 27 35 – Sn3 640 680 640-680

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