Brazing Pastes

Product Uses and Applications

Brazing paste is an advanced form of brazing filler material which offers some key advantages for automated and semi automated processes:

  • Automated dispensing of paste controls the amount of alloy used
  • Brazing paste enables brazing processes to be automated
  • Multiple braze rings or preforms can be replaced with one paste
  • Levels of flux can be controlled to optimise the joint quality
  • Reduced handling of brazing consumables by operators

The charts below show standard alloys supplied as paste however it is possible to supply oher alloys not listed here. VBC Group are able to specify the correct grade for a particular application and assist with product testing.

Key ProductsAgCuZnSnMnNiInMelting Range °CISO 17672:2016Product InfoKey Points
General Purpose Silver Brazing Alloy Paste
Meta-Braze 156 Braze Paste5622175---620-655Ag 156View product info

Meta-Braze 156 Braze Paste

Meta-Braze 156 Braze Paste contains a low melting silver brazing alloy with very good flow characteristics. It is designed for use in automated or semi automated brazing processes. Meta-Braze 156 Braze Paste can be used to joining copper and copper alloys, nickel and nickel alloys and almost any steels.×

Low melting temperature and good alloy flow
Meta-Braze 155 Braze Paste5521222---630-660Ag 155View product info

Meta-Braze 155 Braze Paste

Meta-Braze 155 is a very widely used brazing alloy combining low brazing temperatures with a short melting range making it free flowing and easy to use. As a brazing paste Meta-Braze 155 is combined with a suitable flux binder producing an excellent product for a variety of brazing uses.

Product Forms

  • braze-paste
×
Low melting temperature and good alloy flow
Meta-Braze 145 Braze Paste452725.52.5---640-680Ag145View product info

Meta-Braze 145 Braze Paste

Meta-Braze 145 Brazing Paste can be used for a number of applications including brazing of PCD and electrical contacts. Silver brazing alloys with 45% silver provide a good compromise between the free-flowing and lower melting range products with silver 55% and 56% alloys and those with more intermediate melting and flow properties such as those containing 40% or 38% silver.

Product Forms

  • braze-paste
×
General purpose silver braze paste
Meta-Braze 140 Braze Paste4030282---650-710Ag140View product info

Meta-Braze 140 Braze Paste

Meta-Braze 140 Brazing Paste is a combines a good general purpose brazing alloy which has intermediate melting and flow properties with a specially selected brazing flux. It can be used for automating brazing operations in particular for steel, brass and copper tubular fittings.

Product Forms

  • braze-paste
×
General purpose silver braze paste
Braze Paste for Tungsten Carbide and PCD Tools
Meta-Braze 450 Braze Paste502028--2-660-705Ag 450 View product info

Meta-Braze 450 Braze Paste

Meta-Braze 450 Brazing Paste is specially designed for brazing of tungsten carbide and PCD segments. It is ideally suited for large scale production brazing of small carbide tips in the tool industry or for brazing small PCD segments to steel for the production of cutting tools.

Product Forms

  • braze-paste
×
For brazing tungsten carbide and PCD
Meta-Braze 049 Braze Paste4927.520.5-2.50.5-670-690-View product info

Meta-Braze 049 Braze Paste

Meta-braze 049 Brazing Paste combines Meta-braze 049 brazing alloy with a boron modified flux binder system for improved wetting on tungsten carbide.A typical application for this product would be brazing of tungsten carbide to steel in small carbide tips for tools.When making brazing paste Meta-braze 049 is preferred to Meta-braze 449 as the latter is difficult to incorporate into a paste product. For ease of use however Meta-braze 450 provides the best solution.

Product Forms

  • braze-paste
×
For brazing tungsten carbide and PCD
Specialised Silver Brazing Pastes
Meta-Braze 463 Braze Paste6328.5-6-2.5-690-800Ag 463View product info

Meta-Braze 463 Braze Paste

Meta-Braze 463 is a zinc-free alloy designed to prevent interfacial (crevice) corrosion in stainless steel silver-brazed joints that are exposed to water in damp or wet service environments. As a brazing paste the alloy is combined with a suitable flux binder system in a bespoke product. Product availability is likely to be limited and subject to special order and minimum order conditions.

Product Forms

  • braze-paste
×
Special alloy for stainless steel
Meta-Braze 456a Braze Paste5627.25---2.2514.5600-710Ag 456aView product info

Meta-Braze 456a Braze Paste

Meta-Braze 456a is a special alloy that was developed to combat interfacial (crevice) corrosion which can occur when a silver brazed joint made between certain grades of stainless steel is exposed to water, water vapour or aqueous solutions in service.
As a brazing paste the alloy is combined with a suitable flux binder system in a bespoke product. Product availability is likely to be limited and subject to special order and minimum order conditions.

Product Forms

  • braze-paste
×
Special alloy for stainless steel
Meta-Braze 024 Braze Paste244333----740-800-View product info

Meta-Braze 024 Braze Paste

Meta-braze 024 Brazing Paste combines Meta-braze 024 brazing alloy with a suitable flux binder system. It has been used for certain aerospace applications. This product is a bespoke item and would be subject to special order conditions and, if required a COA could be provided at an extra cost.×

Special alloy for aerospace applications