Brazing paste is an advanced form of brazing filler material which offers some key advantages for automated and semi automated processes:
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 Products | Ag | Cu | Zn | Sn | Mn | Ni | In | Melting Range °C | ISO 17672:2016 | Product Info | Key Points |
|---|---|---|---|---|---|---|---|---|---|---|---|
| General Purpose Silver Brazing Alloy Paste | |||||||||||
| Meta-Braze™ 156 Braze Paste | 56 | 22 | 17 | 5 | - | - | - | 620-655 | Ag 156 | ViewMeta-Braze™ 156 Braze PasteMeta-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 Paste | 55 | 21 | 22 | 2 | - | - | - | 630-660 | Ag 155 | ViewMeta-Braze™ 155 Braze PasteMeta-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× | Low melting temperature and good alloy flow |
| Meta-Braze™ 145 Braze Paste | 45 | 27 | 25.5 | 2.5 | - | - | - | 640-680 | Ag145 | ViewMeta-Braze™ 145 Braze PasteMeta-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× | General purpose silver braze paste |
| Meta-Braze™ 140 Braze Paste | 40 | 30 | 28 | 2 | - | - | - | 650-710 | Ag140 | ViewMeta-Braze™ 140 Braze PasteMeta-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× | General purpose silver braze paste |
| Braze Paste for Tungsten Carbide and PCD Tools | |||||||||||
| Meta-Braze™ 450 Braze Paste | 50 | 20 | 28 | - | - | 2 | - | 660-705 | Ag 450 | ViewMeta-Braze™ 450 Braze PasteMeta-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× | For brazing tungsten carbide and PCD |
| Meta-Braze™ 049 Braze Paste | 49 | 27.5 | 20.5 | - | 2.5 | 0.5 | - | 670-690 | - | ViewMeta-Braze™ 049 Braze PasteMeta-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× | For brazing tungsten carbide and PCD |
| Specialised Silver Brazing Pastes | |||||||||||
| Meta-Braze™ 463 Braze Paste | 63 | 28.5 | - | 6 | - | 2.5 | - | 690-800 | Ag 463 | ViewMeta-Braze™ 463 Braze PasteMeta-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× | Special alloy for stainless steel |
| Meta-Braze™ 456a Braze Paste | 56 | 27.25 | - | - | - | 2.25 | 14.5 | 600-710 | Ag 456a | ViewMeta-Braze™ 456a Braze PasteMeta-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. Product Forms× | Special alloy for stainless steel |
| Meta-Braze™ 024 Braze Paste | 24 | 43 | 33 | - | - | - | - | 740-800 | - | ViewMeta-Braze™ 024 Braze PasteMeta-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 |