Weldcote Metals BPFLUX1JAR Black Paste Brazing Flux – Bottle

Use with silver or other brazing alloys liquidus below 1800?F
Recommended for stainless, heavy parts and whenever heating cycle is prolonged
For all metals other than aluminum, magnesium or titanium
Meets AMS 3411, AWS 5.31, Class FB3C; Fed. Spec. 0-F-499D, Type B