Metal Bonding BNi?2 Powder forVacuum Brazing Work
High joint strength at room and elevated temperature
Industry standard for a reason — it covers 80% of high-temp brazingneeds
Best for:? Stainless steel assemblies, heat exchangers, turbinecomponents, diamond/CBN tool brazing, chemical e, generalindustrial brazing
Watch out:? Chromium forms stable oxides → requires good vacuum ordry protective atmosphere; not for nuclear core applications
This is why it is used in turbine components, engine structures,and heat exchangers.
4. Oxidation and corrosion resistance from chromium
The 6–8% Cr content gives the brazed joint:
good high-temperature oxidation resistance
resistance to many chemical / exhaust / process-gasenvironments
much better service life than silver-based or copper-based brazingalloysRite Material
Good corrosion resistance? in many chemical and high-temperatureenvironments
After diffusion brazing, joint remelt temperature can rise wellabove the original liquidus
Recommended joint clearance: 0.03–0.10 mm (0.001–0.004 in)?
4. Powder Characteristics (Gas-Atomized Grade)
Spherical or near-spherical particles
Low oxygen content
Uniform particle-size distribution
Good flowability and tap density → suitable for automatic pastedispensing, screen printing, and powder deposition
4. Good corrosion resistance: Chromium addition providessatisfactory resistance to oxidation and moderate corrosiveenvironments. Note: Boron may diffuse into thin-walled substratesand form brittle intermetallic phases if process parameters are notwell controlled.
5. Flexible product forms: Gas-atomized BNi-2 powder features highsphericity and good flowability, easy for making brazing paste;amorphous BNi-2 foil delivers consistent thickness for precisionassembly.
Main Applications
Aerospace & Aviation
BNi-2 is a standard vacuum brazing filler for aerospace components.It is used to join stainless steel and superalloy parts foraircraft turbine cold-section assemblies, aerospace heatexchangers, honeycomb structures, engine manifolds and valvecomponents, serving under combined high temperature, thermalcycling and mechanical load.Rite Material
Uniform Particle BNi?2 Powder for Brazing Production