BNi?2 Powder for Aero Engine ColdSection Parts

Key Performance Properties
1. Excellent wettability and fluidity: Silicon and boron act asmelting depressants, giving BNi-2 outstanding capillary flow. Itcan thoroughly fill narrow brazing gaps (recommended gap: 30–100μm) and form dense, uniform metallurgical bonding with stainlesssteels, nickel & cobalt-based superalloys.
2. High joint strength & high-temperature performance: Brazedjoints retain high mechanical strength and good oxidationresistance at elevated temperatures. Post-brazing diffusion holdingcan further improve ductility and homogenize the brazed seam toreduce brittle phases.
3. Controlled base-metal impact: Its brazing temperature oidssevere grain growth of most high-temperature base materials,preserving the substrate’s original mechanical properties.
Boron and silicon can form hard borides/silicides in the joint.
Avoid excessive soak time
For critical parts, add a diffusion heat treatment
This improves ductility and high-temperature service life
7. Material compatibility
BNi-2 is excellent for:
Stainless steel 304 / 316 / 321 / 410
Inconel, Hastelloy, other Ni-base alloys
Cobalt alloys, cemented carbide, diamond toolsRite Material
Common sizes: -200 mesh, -300 mesh, -325 mesh, or customizedmicrons
5. Typical Applications
Aerospace:? jet engine structural members, turbine components,compressor vanes, stators, honeycomb structures, seals
Energy & turbines:? gas turbine parts, heat exchangers, EGRcoolers, nuclear e outside the core
Stainless steel & superalloy joining:? austenitic/martensiticstainless steel, Inconel, Hastelloy, cobalt alloys
Cutting tools & wear parts:? brazing diamond segments, tungstencarbide inserts, cemented carbide tools
Automotive & e-mobility:? turbocharger parts, stainlesscooling-system components, li plates, heat-exchangerassemblies
 
Watch out:? Higher brazing temperature than BNi-2; no chromium →limited oxidation resistance at elevated service temperatures
How to Decide — Quick Decision Tree
Step 1:? Does the part need oxidation/corrosion resistance at hightemperature?
Yes → BNi-2
No → Go to Step 2
Step 2:? Is the joint clearance very tight (≤0.05 mm) or theoverlap very long?
Yes → BNi-3
No → Go to Step 3
Step 3:? Do you need more ductility or he wider gaps (0.05–0.15mm)?
Yes → BNi-4
Still unsure → BNi-2? (it covers most cases)
One-Line SummaryRite Material

BNi?2 Brazing Powder for Mass Production Brazing