Meta-Braze MT21  Flux Powder is a medium temperature brazing flux suitable for use with silver brazing filler metals. It has a working range of 600-900 ̊C and is suitable for use with silver brazing filler metals that melt below 800 ̊C.It is useful for brazing larger assemblies in steel or copper wherever prolonged heating may cause general-purpose fluxes to become exhausted. It also finds applications in silversmithing. Conforms to:EN 1045: FH10 Working range:600-90

Replaces Tenacity no 4A Flux Powder.Please note  the tubs are brought from the manufacturer sealed and weighed total weight with flux powder is 500 grams, the seals are checked before postage.