Turbo Assembly BNi?2 Powder forVacuum Brazing
BNi-3 — The Tight-Clearance Specialist
Composition:? Ni-Si-B (Cr 0%, Si 4–5%, B ~3%, Fe ≤1.5%)
Melting & Brazing
Solidus 982 °C → Liquidus 1038–1054 °C (medium ~56–72 °C range)
Typical brazing: 1060–1120 °C
Why choose it
No chromium → far less sensitive to marginal furnace atmospheres(slightly higher oxygen or moisture won't ruin the joint)
Flows exceptionally well into very tight clearances (0–0.05 mm) andlong capillary paths
Lower parent-metal attack than BNi-2
Its “special” points are not just the chemistry — they are thecombination? of low melting range, excellent flow, and serviceperformance close to stainless steel / superalloys.
1. Narrow melting range, lower brazing temperature
Solidus: 971 °C
Liquidus: 999 °C
Typical brazing temperature: 1010–1175 °C
Because the melting range is only about 30 °C, BNi-2 flowspredictably and fills capillary gaps without overheating the basemetal. It brazes below the solution-treatment temperature of manystainless steels and nickel alloys, so the parent metal does notsuffer grain growth, softening, or distortion. Rite Material
3. Key Properties
Melting range:? Solidus 971 °C (1780 °F), Liquidus 999–1000 °C(1830–1832 °F)?
Brazing temperature:? typically 1010–1175 °C (1850–2150 °F); commonproduction range 1060–1120 °C?
Narrow melting range? → good process control, less base-metaloverheating
Excellent wettability and capillary flow? in vacuum, argon, or dryhydrogen atmospheres
High joint strength? at room and elevated temperatures
Good oxidation resistance? up to ~980 °C (1800 °F)
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-exchangerassembliesRite Material
Corrosion Resistant BNi?2 Powder for Braze Seams