BNi?2 Brazing Powder for GasTurbine Recuperators

2. Excellent wettability and capillary flow
Si and B act as melting-point depressants and flow promoters.Molten BNi-2 spreads on stainless steel, Inconel,Hastelloy, cobalt alloys, and cemented carbide, and penetrates:
narrow joints (0.03–0.10 mm)
honeycomb structures
finned / plate-fin heat exchangers
complex vacuum-brazed assemblies
Result: dense, leak-tight joints with minimal voids.
2. Powder Application Methods
Method A: Make brazing paste (most common for honeycomb, heatexchangers, precision parts)
Mix BNi?2 powder with organic binder at powder : binder = 7:3 ~8:2, stir uniformly. Apply by bing, dispensing or screen printing.Dry at room temperature or 80–120 °C to fully evaporate solvent tooid pores.Rite Material
Application Notes: Vacuum or protective atmosphere brazing ismandatory. Wide gaps shall be oided to prevent brittle central-linephases. Diffusion heat treatment is recommended for criticalaerospace parts to optimize joint toughness.
Short catalog version (for product page, optional)
BNi-2 is a nickel-based vacuum brazing alloy (AWS A5.8 BNi-2,AMS4777) supplied in powder, amorphous foil and paste. With meltingrange 970–1000°C, it features excellent wettability,high-temperature strength and oxidation resistance. It reliablybrazes stainless steel, Ni/Co superalloys for aerospace engineparts, heat exchangers, honeycomb structures, gas turbinecomponents and superhard cutting tools under vacuum or inertatmosphere.
 
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 applicationsRiteMaterial

BNi?2 Powder AMS4777 Nickel Base Filler Alloy