Copper Pipes, Tubes, Coils & Fittings
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Brazing Rods for HVAC, Plumbing & Industrial Applications
Product Overview
Brazing rods supplied by R V Metal Corporation are engineered for strong, leak-proof, and metallurgically sound joints across HVAC, refrigeration, plumbing, electrical, and industrial fabrication applications. Manufactured from high-purity copper and copper-based alloys with precisely controlled compositions, these brazing rods ensure excellent capillary flow, consistent melting behavior, and superior joint strength under thermal and mechanical stress.
Our brazing rods are widely used for joining copper-to-copper, copper-to-brass, and copper-to-steel assemblies in air-conditioning systems, refrigeration lines, heat exchangers, electrical conductors, and industrial piping networks. Designed to perform reliably at elevated temperatures, they provide smooth fillets, minimal oxidation, and reduced risk of porosity or cracking, even in critical pressure-bearing joints.
Available in multiple diameters, lengths, and alloy grades—including phosphorus-bearing and silver-bearing variants—R V Metal Corporation’s brazing rods comply with international standards and are suitable for both manual and automated brazing processes. Each product is supplied with full traceability, chemical composition data, and quality assurance documentation, making them a trusted choice for OEMs, contractors, and EPC projects worldwide.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Copper & Copper Alloy Brazing Rods |
| Material Grades | Copper DHP (C12200), Copper ETP (C11000), Phosphorus Copper, Silver-Bearing Copper Alloys |
| Manufacturing Process | Hot Rolled / Cold Drawn / Extruded |
| Form | Straight Rods |
| Standard Lengths | 500 mm, 1000 mm, 2000 mm (custom lengths available) |
| Diameter Range | 1.6 mm to 6.0 mm (custom sizes on request) |
| Melting Range | 710°C – 890°C (depending on alloy composition) |
| Working Temperature | Up to 600°C (joint service temperature) |
| Flux Requirement | Self-fluxing on copper-to-copper joints (phosphorus-containing grades); external flux required for copper-to-brass or copper-to-steel |
| Joint Type Compatibility | Copper–Copper, Copper–Brass, Copper–Steel |
| Mechanical Strength | High tensile and shear strength suitable for pressure-bearing joints |
| Electrical Conductivity | High conductivity for electrical and refrigeration applications |
| Surface Finish | Bright, Smooth, Oxide-Free |
| Standards Compliance | ASTM B260, AWS A5.8, EN ISO 17672, IS 2927 |
| Quality Documentation | Mill Test Certificate (MTC), Chemical & Mechanical Test Reports |
| Typical Applications | HVAC & Refrigeration, Plumbing, Heat Exchangers, Electrical Assemblies, Industrial Piping |
| Packing | Bundled / Boxed with moisture-protection packaging |
Chemical Composition
| Grade / Alloy Type | Copper (Cu) % | Phosphorus (P) % | Silver (Ag) % | Zinc (Zn) % | Tin (Sn) % | Other Elements % |
|---|---|---|---|---|---|---|
| Copper DHP Brazing Rod (C12200) | ≥ 99.90 | 0.015 – 0.040 | — | — | — | ≤ 0.05 |
| Copper ETP Brazing Rod (C11000) | ≥ 99.90 | ≤ 0.005 | — | — | — | ≤ 0.05 |
| Phosphorus Copper Brazing Rod (BCuP-2) | Balance | 6.8 – 7.5 | — | — | — | ≤ 0.10 |
| Silver Bearing Copper Brazing Rod (BCuP-5) | Balance | 5.0 – 6.0 | 14.5 – 15.5 | — | — | ≤ 0.10 |
| Copper-Zinc Brazing Rod (Brass Type) | 58 – 62 | ≤ 0.05 | — | Balance | ≤ 0.30 | ≤ 0.20 |
| High-Silver Brazing Alloy (BCuAg Series) | Balance | ≤ 0.05 | 30 – 45 | ≤ 2.0 | ≤ 1.0 | ≤ 0.20 |
UNS Codes & Grades
| UNS Code | AWS / Industry Designation | Common Grade Name | Base Alloy System | Typical Composition Highlights | Primary Application |
|---|---|---|---|---|---|
| C12200 | — | Copper DHP Brazing Rod | Copper–Phosphorus | Cu ≥ 99.90%, P: 0.015–0.040% | Copper-to-copper brazing, HVAC & refrigeration joints |
| C11000 | — | Copper ETP Brazing Rod | Electrolytic Tough Pitch Copper | Cu ≥ 99.90%, Oxygen ≤ 0.04% | General copper brazing (non-hydrogen environments) |
| — | BCuP-2 | Phosphorus Copper Brazing Rod | Copper–Phosphorus | P: 6.8–7.5%, Balance Cu | Self-fluxing copper joints, plumbing & HVAC |
| — | BCuP-3 | Low Phosphorus Copper Brazing Rod | Copper–Phosphorus | P: 4.8–5.3%, Balance Cu | Copper piping, moderate-strength joints |
| — | BCuP-5 | Silver Bearing Copper Brazing Rod | Copper–Silver–Phosphorus | Ag: ~15%, P: ~5%, Balance Cu | High-vibration HVAC, refrigeration systems |
| — | BCuP-6 | High Strength Silver Copper Brazing Rod | Copper–Silver–Phosphorus | Ag: ~6%, P: ~6%, Balance Cu | OEM refrigeration, compressor connections |
| C27200 | — | Brass Brazing Rod | Copper–Zinc | Cu: ~60%, Zn: Balance | Steel-to-copper, general fabrication |
| — | BCuAg Series | High Silver Brazing Alloy | Copper–Silver–Zinc | Ag: 30–45%, Balance Cu & Zn | Precision brazing, electrical & aerospace joints |
Mechanical, Physical & Fabrication Properties
| Property | Copper–Phosphorus Brazing Rod (BCuP) | Silver Copper Brazing Rod (BCuAg / BCuP-5) | Brass Brazing Rod | Remarks / Practical Relevance |
|---|---|---|---|---|
| Melting Range | 710 – 890 °C | 645 – 815 °C | 870 – 950 °C | Lower melting range = reduced base metal distortion |
| Recommended Brazing Temperature | 740 – 820 °C | 650 – 780 °C | 900 – 950 °C | Silver rods allow faster brazing with less heat input |
| Tensile Strength of Joint | 200 – 250 MPa | 300 – 450 MPa | 250 – 300 MPa | Silver-bearing rods offer superior joint strength |
| Shear Strength | 140 – 180 MPa | 220 – 320 MPa | 160 – 220 MPa | Critical for vibration-prone HVAC joints |
| Ductility | Moderate | High | Moderate | Higher ductility improves fatigue resistance |
| Electrical Conductivity | Good | Very Good | Moderate | Important for electrical and refrigeration applications |
| Corrosion Resistance | Good (Copper systems) | Excellent | Moderate | Silver alloys perform better in moist environments |
| Flow Characteristics | Good capillary flow | Excellent capillary flow | Average flow | Flow quality impacts joint integrity |
| Flux Requirement | No flux for Cu–Cu joints | No flux for Cu–Cu joints | Flux required | BCuP rods are self-fluxing on copper |
| Fabrication Ease | Easy | Very Easy | Moderate | Lower brazing temp improves handling & speed |
| Compatibility with Copper Tubes | Excellent | Excellent | Good | BCuP rods are industry standard for copper tubing |
| Vibration & Fatigue Resistance | Moderate | High | Moderate | Silver brazing rods preferred for VRF/VRV systems |
| Typical Applications | HVAC, plumbing, refrigeration | OEM HVAC, compressors, precision joints | Steel-to-copper, general fabrication | Application-driven grade selection is critical |
Common Names & International Identifiers
| Product Type | Common Trade Names | AWS Classification | UNS Code | International / Regional Identifiers | Industry Usage Reference |
|---|---|---|---|---|---|
| Copper Phosphorus Brazing Rod | Phos Copper Rod, Phosphor Copper Rod | BCuP-2 / BCuP-3 | C12200 / C11900 | EN ISO 17672: CP203 / CP204 IS 2927: Type CP |
Standard HVAC & refrigeration copper-to-copper joints |
| Copper–Phosphorus–Silver Brazing Rod | Silver Phos Rod, Sil-Fos Rod | BCuP-5 | C12200 (Ag-bearing) | EN ISO 17672: CP105 IS 2927: Type CPS |
VRF/VRV systems, vibration-prone HVAC joints |
| Silver Brazing Rod | Silver Solder Rod, Hard Silver Brazing Rod | BAg-1 / BAg-5 / BAg-7 | Various (Ag-Cu-Zn alloys) | EN ISO 17672: Ag 145 / Ag 155 JIS Z 3264 |
High-strength, precision and OEM brazing applications |
| Brass Brazing Rod | Brass Filler Rod, Bronze Brazing Rod | RBCuZn-C | C26000 / C27000 | EN ISO 17672: Cu 305 IS 2927: Type BR |
Steel-to-copper, general fabrication, structural joints |
| Low Fuming Bronze Rod | LFB Rod, LF Bronze Brazing Rod | RBCuZn-D | C28500 | EN ISO 17672: Cu 306 | Reduced zinc fume applications, heavy fabrication |
| Nickel Silver Brazing Rod | Nickel Silver Rod, German Silver Rod | RBCuZnNi | C77000 | EN ISO 17672: Cu 307 | Decorative, corrosion-resistant and specialty joints |
Standards & International Equivalents
| Brazing Rod Type | AWS / A5 Standard (USA) | EN / ISO Standard (Europe) | IS Standard (India) | JIS Standard (Japan) | DIN / Other International References |
|---|---|---|---|---|---|
| Copper Phosphorus Brazing Rod | AWS A5.8 – BCuP-2, BCuP-3 | EN ISO 17672 – CP203, CP204 | IS 2927 – Type CP | JIS Z 3264 – BCUP | DIN EN 1044 – CP2 / CP3 |
| Copper–Phosphorus–Silver Brazing Rod | AWS A5.8 – BCuP-5 | EN ISO 17672 – CP105 | IS 2927 – Type CPS | JIS Z 3264 – BCUP-5 | DIN EN 1044 – AG203 |
| Silver Brazing Rod | AWS A5.8 – BAg-1, BAg-5, BAg-7 | EN ISO 17672 – Ag 145, Ag 155 | IS 2927 – Type S | JIS Z 3264 – BAg | DIN EN 1044 – AG104 / AG105 |
| Brass Brazing Rod | AWS A5.8 – RBCuZn-C | EN ISO 17672 – Cu 305 | IS 2927 – Type BR | JIS Z 3264 – BCuZn | DIN EN 1044 – CuZn40 |
| Low Fuming Bronze Brazing Rod | AWS A5.8 – RBCuZn-D | EN ISO 17672 – Cu 306 | IS 2927 – Type LFB | JIS Z 3264 – BCuZn-D | DIN EN 1044 – CuZn36Ni |
| Nickel Silver Brazing Rod | AWS A5.8 – RBCuZnNi | EN ISO 17672 – Cu 307 | IS 2927 – Type NS | JIS Z 3264 – BCuZnNi | DIN EN 1044 – CuNiZn |
Applications
| Brazing Rod Type | Primary Materials Joined | Typical Applications | Industry Segments | Key Performance Reason |
|---|---|---|---|---|
| Copper Phosphorus Brazing Rod (BCuP) | Copper to Copper | ACR copper tube joints, refrigeration piping, plumbing joints | HVAC, Refrigeration, Plumbing | Self-fluxing on copper, strong capillary action |
| Copper–Phosphorus–Silver Brazing Rod (BCuP-Ag) | Copper to Copper, Copper to Brass | VRF/VRV systems, high-pressure refrigeration lines | HVAC, Commercial Cooling | Improved ductility and vibration resistance |
| Silver Brazing Rod (BAg) | Copper, Brass, Steel, Stainless Steel | Heat exchangers, medical gas pipelines, precision assemblies | Medical, Aerospace, Process Engineering | Low melting range, excellent wetting on dissimilar metals |
| Brass Brazing Rod | Copper, Brass, Mild Steel | Structural brazing, pipe fittings, sheet metal joints | Fabrication, Plumbing, Construction | High strength joint with economical cost |
| Low Fuming Bronze Brazing Rod (LFB) | Copper, Brass, Steel | Automotive parts, HVAC frames, heavy fabrication | Automotive, HVAC Manufacturing | Reduced zinc fumes, better operator safety |
| Nickel Silver Brazing Rod | Copper, Brass, Stainless Steel | Marine fittings, electrical hardware, corrosion-prone joints | Marine, Electrical, Defense | High corrosion resistance and joint integrity |
Standard Brazing Rods Dimensional Chart
| Rod Diameter (mm) | Rod Diameter (inch) | Standard Length (mm) | Standard Length (inch) | Approx. Weight per Rod (g) | Typical Applications |
|---|---|---|---|---|---|
| 1.6 | 1/16" | 500 | 20" | 9 – 11 | Capillary brazing, thin-wall copper tubes |
| 2.0 | 5/64" | 500 | 20" | 14 – 16 | ACR copper tubes, plumbing joints |
| 2.5 | 3/32" | 500 | 20" | 22 – 25 | HVAC piping, refrigeration lines |
| 3.2 | 1/8" | 500 | 20" | 35 – 40 | VRF/VRV systems, heavy copper joints |
| 4.0 | 5/32" | 500 | 20" | 55 – 60 | Large diameter copper & brass tubes |
| 5.0 | 3/16" | 500 | 20" | 85 – 95 | Industrial fabrication, thick-wall sections |
| 6.0 | 1/4" | 500 | 20" | 125 – 135 | Structural brazing, heavy-duty applications |
