Tenacity™ No.20 Flux Powder is a high temperature brazing flux suitable for use with copper based brazing filler metals. Typically it would be used for brazing or bronze/braze welding of mild steel and copper components with brass type brazing filler metals. It is effective on copper and copper based alloys, mild and low alloy steels and tungsten carbide with alloys melting between 750-950°C. Information provided by Johnson Matthey Metal Joining |