2% Silver Copper-Phosphorus Brazing Rod | BCu91PAg | Lower Melting Point & Better Fluidity | For Copper & Brass Brazing

Model: BCu91PAg (2% Ag Copper-Phosphorus Brazing Rod) | Size: Φ2.0mm × 500mm | Melting Range: 645–790°C

Product Overview

This 2% silver-containing copper-phosphorus brazing rod offers a lower melting temperature, better fluidity, and wettability than silver-free phosphorus-copper solder. It is self-fluxing for pure copper torch brazing, producing a bright joint appearance with excellent gap-filling capacity and improved joint ductility.

Key Advantages

2% Silver Additive, Lower Brazing Temperature
The 2% silver additive lowers the brazing temperature, reducing the risk of overheating the base metal and improving operational efficiency.

Superior Capillary Penetration
Superior capillary penetration allows the filler metal to flow into narrow gaps, ensuring strong and reliable joints.

Better Ductility, Withstands Slight Vibration
Better ductility compared with silver-free copper-phosphorus alloys allows the joint to withstand slight vibration, reducing the risk of cracking under dynamic loads.

No Flux Required for Pure Copper Welding
Self-fluxing for pure copper torch brazing — no additional flux required, simplifying operation and reducing consumable costs.

Nice Weld Appearance, Reduces Rework
Nice weld appearance reduces rework and post-brazing cleanup, improving overall productivity.

Technical Specifications

Applications

• Air-Conditioning & Refrigeration: Copper tubes and compressor fittings

• Plumbing & Pipelines: Copper and brass pipelines, plumbing valves

• Motors & Instruments: Copper parts for motors and instruments

• Slight Vibration Joints: Suitable for copper joints under slight vibration

• Brass Brazing: Flux is mandatory for brass brazing

Suitable for copper joints under slight vibration. Flux is mandatory for brass brazing.

Usage Instructions

Surface Preparation: Thoroughly clean the surfaces to be brazed, removing grease, oxides, and other contaminants. Maintain proper joint clearance for optimal capillary flow.

Heating: Heat the joint evenly using a torch. The 2% silver content allows for a lower brazing temperature compared to silver-free alloys, reducing the risk of overheating.

Brazing: Feed the brazing rod into the joint once the base metal reaches the brazing temperature. The filler metal will flow into the gap by capillary action.

Brass Brazing: Flux must be applied when brazing brass. Use an appropriate brazing flux for optimal wetting and spreading.

Post-Braze Cleaning: Clean the brazed joint as needed. The bright joint appearance typically requires minimal cleanup.

Safety Precautions:

• Wear appropriate protective equipment during brazing.

• Ensure adequate ventilation in the work area.

• Keep flammable materials away from the brazing zone.

• Allow the workpiece to cool before handling.

Storage: Store in a dry environment to prevent oxidation. Keep the rods clean and free from contaminants.

FAQ

Q: What is the advantage of the 2% silver content?
A: The 2% silver additive lowers the brazing temperature and improves fluidity, wettability, and joint ductility compared to silver-free copper-phosphorus alloys.

Q: Is flux required for brazing?
A: No flux is required for pure copper brazing. However, flux is mandatory for brass brazing.

Q: What is the melting range?
A: The melting range is 645–790°C.

Q: What base metals can be brazed?
A: It is suitable for pure copper, brass, and copper alloys.

Q: Can it withstand vibration?
A: Yes. The improved ductility allows the joint to withstand slight vibration, making it suitable for applications with minor dynamic loads.

Q: What standards does it comply with?
A: It complies with GB/T6418-2008 and GB10046-2008 standards.

Q: How is it packed?
A: It is box packed by weight.