1. Different chemical compositions

 

The composition of phosphorus copper welding rod is phosphorus, and the chemical composition of silver copper welding rod is silver.

 

2. The strength after welding varies

 

The post weld strength of phosphorus copper welding rods is more brittle, while the post weld strength of silver copper welding rods is higher than that of phosphorus copper welding rods.

 

Classification and composition of phosphorus copper welding rods

 

1. BCu92P: Composition P: 7.5-8.5%, Copper: remainder. The melting temperature is 710-750 ℃, with a low melting point. This solder has good fluidity but is relatively brittle. It is generally used for brazing copper and brass parts that are not subjected to impact loads and vibration.

 

2. BCu93P (HL201/BCuP-2): Composition P: 6.80-7.50%, copper: balance. The melting temperature is 710-793 ℃. This solder has good fluidity and can flow into joints with small gaps. However, the solder is brittle and is generally used in the electromechanical and instrumentation industries for brazing copper and brass parts that are not subjected to impact loads.