BrazeLet® BNi5

Nickel-based brazing alloy

The nickel-based brazing alloy BrazeLet BNi5 has good wetting behaviour on stainless steels and nickel-based superalloys and is suitable for brazing in vacuum or protective atmospheres (hydrogen or argon). The high level of alloyed chromium results in a good hot gas and acid corrosion resistance. The high melting range of BrazeLet BNi5 makes it suitable for applications working at very high temperatures, for instance EGR coolers for trucks, automotive metal catalytic converters and turbine vanes. It is also a commonly used filler material for industrial heat exchangers. Joint properties can be further improved by employing a diffusion hold after brazing.

     
 

Nominal composition: Ni – 19Cr – 10.1Si
Powder type: Gas atomised
Melting range: 1080 – 1135 °C
Minimum brazing temperature: 1150 °C
Recommended gap clearance: 30 – 100 µm
Particle size distribution: -106 (F) µm, -63 µm, -45 µm
Applicable specifications: AMS4782, ISO 17672 Ni650, AWS A5.8M/A5.8 BNi-5, GE B50TF81, ISO 3677 B-Ni71CrSi-1080/1135

 
     

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