
Stay-Silv® Black Brazing Flux – High-Temperature Flux for Demanding Silver Brazing Applications
Stay-Silv® Black Flux is a high-performance, all-purpose brazing flux formulated for silver brazing under high heat and extended heating cycles. Engineered with boron additives, this flux delivers excellent protection, even during prolonged or localized induction heating. Its smooth, uniform application and ability to resist oxidation make it ideal for use on ferrous and non-ferrous base metals.
Key Features:
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High-temperature formula suitable for intense, localized heat (e.g., induction brazing)
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Extended active life with boron-enhanced protection against refractory oxides
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Turns clear near brazing temperature for accurate braze wire timing
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Recommended for brazing copper, brass, steel, stainless steel, nickel alloys, and tungsten carbide
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Compatible with AWS A5.8 BAg and BCuP filler metals, as well as ISO 17672 Ag and CuP alloys
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Complies with EU REACH and RoHS directives
Ideal Applications:
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Brazing stainless steel and nickel alloys
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Joining tungsten carbide and other hard-to-weld materials
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Heavy parts or joints requiring longer heating cycles
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Induction and torch brazing environments
Stay-Silv® Black Flux provides reliable performance when precision, strength, and clean joints are critical. Its clear transition at brazing temperature is a valuable visual indicator for optimal filler metal application.