Brazing and Soldering Fluxes

Meta-Braze™ Silver Brazing Fluxes

The use of low temperature (LT) brazing flux is necessary for brazing operations undertaken in air. VBC Group is able to offer a range of silver brazing fluxes with different brazing characteristics to suit a range of applications.

Key ProductsWorking Range ℃EN1045Key Points
Meta-Braze™ Z-BAB Flux Paste550-880-A boric acid and borate free flux paste
Meta-Braze™ MT 21 Flux Powder600-900FH10A silver brazing flux powder for low silver content alloys and prolonged heating
Meta-Braze™ LT 21 Flux Powder550-800FH10A general purpose silver brazing flux powder
Meta-Braze™ LT 22 Flux Powder550-750FH10A general purpose silver brazing flux powder for high silver content alloys only
Meta-Braze™ LT 41 Flux Paste550-800FH10A general purpose silver brazing flux paste
Meta-Braze™ AB 21 Flux Paste550-775FH11A special purpose silver brazing flux paste for aluminium bronze

Meta-Braze™ Silver Brazing Fluxes for Tungsten Carbide and PCD Segments

Special brown boron modified (BM) fluxes are recommended for brazing grades of tungsten carbide which prove difficult for the brazing alloy to wet. Standard silver brazing fluxes are often preferred where wetting isn’t an issue and where use of a white flux is preferable to allow the joint to be seen during brazing.

Low Temperature Silver Brazing FluxWorking Range ℃EN1045Key Points
Meta-Braze™ BM 21 Flux Powder550-800FH12A boron-modified flux powder for tungsten carbide and PCD
Meta-Braze™ BM 41 Flux Paste550-800FH12A boron-modified flux paste for tungsten carbide and PCD
Meta-Braze™ BM 81 Dispensable Flux Paste550-800FH12A boron-modified dispensable flux paste for tungsten carbide and PCD

Meta-Braze™ Medium and High Temperature Brazing Fluxes

The use of brazing flux is necessary for brazing operations using copper based brazing alloys when brazing in air.

Key ProductsWorking Range ℃EN1045Key Points
Meta-Braze™ MT 22 Flux Powder750-1000FH21A general purpose brazing flux powder for brass brazing/bronze welding
Meta-Braze™ HT 21 Flux Powder750-1200FH21A general purpose brazing flux powder for copper brazing alloys
Meta-Braze™ HT 21 Flux Paste750-1200FH21A general purpose brazing flux paste for copper brazing alloys

Meta-Braze™ Aluminium Brazing Fluxes

When brazing aluminium alloys in air it is necessary to use a brazing flux. VBC can supply both fluoride based non-corrosive fluxes and chloride based corrosive fluxes.

Key ProductsWorking Range ℃EN1045Key Points
Meta-Braze™ AL 216C Flux Powder550-660FL10A general purpose aluminium brazing flux powder with corrosive residues
Meta-Braze™ ALNC Flux Powder570-660FL20A general purpose aluminium brazing flux powder with non-corrosive residues
Meta-Braze™ ALNC Flux Paste570-660FL20A general purpose aluminium brazing flux paste with non-corrosive residues
Meta-Braze™ ALC Flux Powder550-660FL10A general purpose aluminium brazing flux powder with corrosive residues
Meta-Braze™ ALC Flux Paste550-660FL10A general purpose aluminium brazing flux paste with corrosive residues

Solda-Met™ Soft Solder Fluxes

Solda-Met™ soft soldering fluxes are designed to cover fluxing requirements for industrial soldering operations. Solda-Met™ 1C and 3C are highly active fluxes and are corrosive in nature. Solda-Met™ 2C is a mildly active flux with non-corrosive ‘no-clean’ flux residues.

Key ProductsRecommended for use onWorking Range ℃Flux Residues/Residue RemovalISO 9453: 2014
Solda-Met™ 3C Flux PasteCorrosive, warm water wash180-350Corrosive, warm water wash-
Solda-Met™ 1C Liquid FluxCorrosive, warm water wash180-350Corrosive, warm water wash-
Solda-Met™ 2C Liquid FluxIntermediate, no-clean/water wash180-300Intermediate, no-clean/water wash-