As an expert in precious metals, Johnson Matthey possesses both metal trading capability and materials knowledge giving it a unique standing in the global brazing market.
Broad Product Range:
Today Johnson Matthey offers one of the broadest ranges of products of any company in its field meeting the needs of its customers and of emerging technologies.
Silver-floTM products are most commonly used to form joints on a combination of the following materials:
The Silver-floTM products are primarily intended for use by brazing in air using a hand torch, fixed burner system, high frequency induction or resistance heating.
They should be used with a compatible brazing flux. This can be introduced to the joint by applying a separate flux powder or paste, by using a flux coated brazing rod or as a brazing paste with a built-in flux binder system.
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These Argo-brazeTM products are most commonly used to form joints on a combination of the following materials:
The Argo-brazeTM products are intended for use by brazing in air using a hand torch, fixed burner system, high frequency induction or resistance heating method.
They should be used with a compatible brazing flux. This can be introduced to the joint by applying a separate flux powder or paste, or a brazing paste with a flux binder system.
These specialised Argo-brazeTM products are used specifically where there is a need to braze stainless steel and the resulting joints will be subject to aqueous environments in service. This includes both the internal and external part of the joint on a combination of stainless steel and the following materials:
The Argo-brazeTM products are intended for use by brazing in air using a hand torch, fixed burner system, high frequency induction or resistance heating methods.
They should be used with a compatible brazing flux. This can be introduced to the joint by applying a separate flux powder or paste, or a brazing paste with a built in flux binder system.
The Sil-fosTM and Copper-floTM products are most commonly used to form joints on the following materials:
The Sil-fosTM and Copper-floTM products are typically used for brazing in air using a hand torch, fixed burner system, high frequency induction or resistance heating.
These products are self-fluxing when used on copper. When used to braze copper alloys a compatible brazing flux should be used. This can be applied using a Johnson Matthey flux powder or paste, or a brazing paste with a flux binder system included.
Argentel™ Brazing Filler Metals
These copper-zinc based products are designed for braze/bronze welding applications. Typical applications involve joining tubular steel parts for automotive
components, on bicycles and furniture. They have also been used to join steel to tungsten carbide in specific applications.
JM Bronze™ and Copper Brazing Filler Metals
These copper-based brazing filler metals are used typically in furnace brazing and without a flux.
The specialised Johnson Matthey Bronze™ filler metals shown here are principally used for the brazing of steel and tungsten carbide components. The addition of manganese with nickel or cobalt has been shown to improve wetting and bonding of the filler metal onto tungsten carbide.
Alu-flo™ Aluminium Brazing Materials
Johnson Matthey supplies a range of filler metals and fluxes for brazing aluminium alloys such as 1000 series (e.g. 1100), 3000 series (e.g. 3003, 3004), 5005 and some 6000 alloys (eg.6061, 6031, 6951). Typical applications for these products include automotive air-conditioning parts, microwave components, refrigeration, air-conditioning and heat exchanger applications.
Available specifications and compositions may vary from those shown below and will be supplied to the prevailing and commercially available specification at
the time of order as agreed with the customer.
Nickelbraze™ Nickel-Based Brazing Filler Metals
Nickel-based brazing filler metals provide exceptional resistance to chemical corrosion and oxidation coupled with high strength at elevated temperatures. Consequently filler metals from this product group are widely used particularly within the aerospace, nuclear and automotive industries. The products in this range have a variety of compositions that result in differing melting ranges, alloy flow, brazing and joint characteristics.
OrobrazeTM filler metals are suitable for brazing a variety of materials including stainless steel, nickel-based high-temperature alloys, super alloys and metallised ceramics. The gold-copper OrobrazeTM filler metals exhibit good wetting on copper, nickel, iron, cobalt, molybdenum, tungsten and alloys thereof.
PallabrazeTM filler metals are also suitable for brazing a wide range of materials such as copper and stainless steel to metallised alumina ceramics and iron-nickel-cobalt alloys.
Applications:
Johnson Matthey’s ‘soft’ solders are most commonly used to form joints on a combination of the following materials:
Solders are primarily intended for use by soldering in air using a soldering iron, hand torch, fixed burner system, high-frequency induction or hot air-heating.
They should be used with a flux capable of removing the oxides found on the parent materials. This can be introduced to the joint by applying a separate flux liquid or paste. Alternatively for selected products the flux can be incorporated into a flux-cored wire or a soldering paste with a built-in flux binder system.
Easy-floTM, TenacityTM and Alu-floTM brazing fluxes are specially formulated proprietary products. They each contain a number of inorganic metal salts. In general the products conform to EN 1045.
Easy-floTM fluxes are used in a variety of silver brazing operations. For example, special grades have been formulated for specific parent metals or heating methods.
TenacityTM fluxes are intended for use in specialised silver brazing and high temperature copper brazing applications.
Alu-floTM fluxes are designed to be used with an aluminium brazing filler metal.
These products should be used with a compatible brazing filler metal. Ideally they will be applied as a pre mixed paste which should be brushed onto the joint surfaces prior to assembly and subsequent heating.
These fluxes are used when brazing in air using a hand torch, fixed burner system or high frequency induction equipment.
