Flux - Powder, Easy-Flo
Easy-Flo - Flux Powder - 250g Tub Easy-flo™ Flux Powder is Johnson Matthey’s leading brand brazing flux. It is sold widely throughout the world and is recognised as one of the best flux powders available. It is very fluid at the bottom end of its working range resulting in early and extensive flux spread. This ensures that the joint surfaces are well protected from oxidation at the earliest possible point of the brazing operation. This high level of fluidity also helps to reduce flux voids/entrapment in the joint, the low viscosity of the flux aiding its displacement by the brazing filler metal from the joint gap. Easy-Flo Flux Powder has a working range of 550-800°C. It is most suitable for use with gold, silver, copper, copper alloys, brass, mild steel and stainless steel, but not aluminium soldering. Brazing is a metal-joining process whereby a filler metal is heated above and distributed between two or more close-fitting parts by capillary action. The filler metal is brought slightly above its melting (liquid US) temperature while protected by a suitable atmosphere, a flux. Then flows over the base metal (known as wetting) and is then cooled to join the work pieces together. It is similar to soldering, except the temperature used to melt the filler metal is above 450 °C. Easy-Flo™ Flux Powder has excellent ‘hot rodding’ characteristics and adheres well to a warmed brazing rod allowing flux to be transferred to the joint area via the rod. This characteristic has made Easy-Flo Flux Powder very popular in hand brazing operations where the time to produce a brazed component is crucial.
