Brazing Rods & Fluxes
Brazing is a joining process where filler metals with a melting point above 450 °C are used to bond base metals without melting them. Brazing offers:
- Strong, leak-proof joints
- Dissimilar metal joining
- Good corrosion resistance
- Smooth finish for piping, HVAC, aerospace, and tooling industries
We supply brazing rods & fluxes from Harris, Castolin, Messer, Lucas-Milhaupt, Böhler, Oerlikon, SIF, UTP, approved for HVAC, oil & gas, power, automotive, tooling, aerospace, and EPC contractors.
1. Brass & Bronze Brazing Alloys
| Grade | Composition | Applications |
|---|---|---|
| RBCuZn-C (Low Fuming Bronze – LFB) | Cu-Zn-Si | General steel brazing, galvanized steels, dissimilar joints. |
| RBCuZn-D (Nickel Bronze) | Cu-Zn-Ni | Improved strength, wear resistance. |
| RBCuZn-B | Cu-Zn | Automotive, piping, mild steel. |
| Cu-Sn (Bronze) | Cu-Sn | Cast iron repair, bearing surfacing. |
2. Silver Brazing Alloys
| Grade | Composition | Applications |
|---|---|---|
| BAg-1 | 45% Ag, Cu, Zn, Cd | General silver brazing. |
| BAg-5 | 45% Ag, Cu, Zn | Cadmium-free, plumbing, HVAC. |
| BAg-7 | 56% Ag, Cu, Zn, Sn | High strength, food industry, dissimilar metals. |
| BAg-24 | 40% Ag, Cu, Zn | Refrigeration, automotive AC. |
| BAg-34 | 30% Ag, Cu, Zn, Ni | Nickel-added, improved corrosion resistance. |
Features: Excellent for joining copper, brass, steel, stainless steel, nickel alloys.
Silver Brazing Alloys (ISO 3677)
These silver-based alloys offer versatility for joining various materials. They are known for their strong joints and low working temperatures.
- B Cu 55 Zn Ag Si 820 - 870: A silver brazing alloy with copper, zinc, and silicon.
- B Cu 36 Zn Ag Sn 630 - 730: A tin-containing silver braze, which lowers the melting range and improves flow characteristics.
- B Ag 40 Cu Zn Sn 650 - 710: A common silver brazing alloy used for general-purpose applications.
- B Ag 56 Zn Cu Sn 620 - 655: High-silver content alloy with a low melting point, ideal for sensitive components.
3. Copper-Phosphorus (Phos-Copper) Alloys
| Grade | Composition | Applications |
|---|---|---|
| BCuP-2 | Cu + 7% P | Copper-to-copper, plumbing, refrigeration. |
| BCuP-3 | Cu + 6% P, Ag | Better flow, ductility. |
| BCuP-5 | Cu + 15% Ag + P | Stronger, dissimilar copper alloys. |
Features:Self-fluxing when used on copper (no flux required).
These alloys are ideal for joining copper-to-copper and copper-to-brass applications. The phosphorus acts as a deoxidizer, eliminating the need for flux when brazing copper joints.
4. Nickel-Based Brazing Alloys
| Grade | Composition | Applications |
|---|---|---|
| BNi-1 | Ni + B + Si | Stainless steels, corrosion-resistant joints. |
| BNi-2 | Ni + Cr + Si + B | High-temp service, aerospace turbines. |
| BNi-5 | Ni + Cr + Si | Tools, dies, carbide tipping. |
| BNi-7 | Ni + Cr + P | Corrosion-resistant stainless & Inconel. |
5. Aluminum Brazing Alloys
| Grade | Composition | Applications |
|---|---|---|
| BAlSi-1 | Al + 12% Si | Aluminum heat exchangers, automotive radiators. |
| BAlSi-4 | Al + 10% Si + Cu | Improved strength, aerospace. |
| Al-12Si rods | Al-Si eutectic | Automotive, condenser tubes. |
6. Cobalt & Specialty Brazing Alloys
| Grade | Composition | Applications |
|---|---|---|
| Co-Cr-W based | Co-Cr-W | High wear and corrosion resistance. |
| Precious metal brazes (Au-based) | Au-Ni-Cu | Electronics, aerospace, medical devices. |
7. Hardfacing & Wear-Resistant Brazing Alloys
- Tungsten carbide tipped rods for mining & tools.
- Nickel/Silver brazing alloys for saw blades and cutting tools.
- Cobalt/Carbide combinations for aerospace wear resistance.
8. Brazing Fluxes
- Flux is essential (except self-fluxing copper-phosphorus alloys).
- Types of Fluxes:
- Borax-based (general): For brass, bronze, silver brazing.
- Fluoride-borate fluxes: For stainless steel and nickel alloys.
- Aluminum fluxes: Potassium fluoroaluminate for aluminum brazing.
- Specialty fluxes: For high-temperature alloys and precision brazing.
- Popular Grades:
- AWS FB3A: Low temperature, easy clean-off.
- AWS FB3C: General purpose.
- AWS FB3D: For stainless steel and nickel alloys.
- Aluminum flux powder/paste: Non-corrosive, low residue.
Why Choose Our Brazing Rods & Fluxes?
- Complete Range: Brass, Bronze, Silver, Phos-Copper, Nickel, Aluminum, Cobalt, Precious Metal.
- Flux Matching: Optimized flux for each base metal.
- Brands: Harris, Castolin, Messer, Böhler, Lucas-Milhaupt, SIF, UTP.
- Approvals: For oil & gas, HVAC, aerospace, EPC.
- Stock: UAE, GCC, Middle East, Africa.
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