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 Products Working Range ℃ EN1045 Key Points
Meta-Braze™ Z-BAB Flux Paste 550-880 - A boric acid and borate free flux paste
Meta-Braze™ MT 21 Flux Powder 600-900 FH10 A silver brazing flux powder for low silver content alloys and prolonged heating
Meta-Braze™ LT 21 Flux Powder 550-800 FH10 A general purpose silver brazing flux powder
Meta-Braze™ LT 22 Flux Powder 550-750 FH10 A general purpose silver brazing flux powder for high silver content alloys only
Meta-Braze™ LT 41 Flux Paste 550-800 FH10 A general purpose silver brazing flux paste
Meta-Braze™ AB 21 Flux Paste 550-775 FH11 A 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 Flux Working Range ℃ EN1045 Key Points
Meta-Braze™ BM 21 Flux Powder 550-800 FH12 A boron-modified flux powder for tungsten carbide and PCD
Meta-Braze™ BM 41 Flux Paste 550-800 FH12 A boron-modified flux paste for tungsten carbide and PCD
Meta-Braze™ BM 81 Dispensable Flux Paste 550-800 FH12 A 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 Products Working Range ℃ EN1045 Key Points
Meta-Braze™ MT 22 Flux Powder 750-1000 FH21 A general purpose brazing flux powder for brass brazing/bronze welding
Meta-Braze™ HT 21 Flux Powder 750-1200 FH21 A general purpose brazing flux powder for copper brazing alloys
Meta-Braze™ HT 21 Flux Paste 750-1200 FH21 A 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 Products Working Range ℃ EN1045 Key Points
Meta-Braze™ AL 216C Flux Powder 550-660 FL10 A general purpose aluminium brazing flux powder with corrosive residues
Meta-Braze™ ALNC Flux Powder 570-660 FL20 A general purpose aluminium brazing flux powder with non-corrosive residues
Meta-Braze™ ALNC Flux Paste 570-660 FL20 A general purpose aluminium brazing flux paste with non-corrosive residues
Meta-Braze™ ALC Flux Powder 550-660 FL10 A general purpose aluminium brazing flux powder with corrosive residues
Meta-Braze™ ALC Flux Paste 550-660 FL10 A 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 Products Recommended for use on Working Range ℃ Flux Residues/Residue Removal ISO 9453: 2014
Solda-Met™ 3C Flux Paste Carbon Steel / Stainless / Copper / Brass 180-350 Carbon Steel / Stainless / Copper / Brass -
Solda-Met™ 1C Liquid Flux Carbon Steel / Stainless / Copper / Brass 180-350 Carbon Steel / Stainless / Copper / Brass -
Solda-Met™ 2C Liquid Flux Copper / Brass 180-300 Copper / Brass -