Silver-flo™ Cadmium Free Silver Solder

Cadmium Free Silver solder

Our wide range of popular cadmium-free silver solder alloys are available in rods, flux-coated rods, wire, foil, preforms, rings, silver solder paste and powder.
 

Silver-Flo Alloys - Cadmium Free Range

Johnson Matthey’s Silver-flo range forms a group of more than 20 cadmium free silver brazing alloys. These have been developed to meet the brazing needs of all sectors of industry. Many of these alloys are excellent substitutes for cadmium bearing alloys. Others can be used for specialised applications.

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Some Features of the Silver-flo Range of Alloys

• A very broad range of alloys which enables the customer to be able to select the optimum product for each brazing process in terms of both cost and alloy characteristics.

• Free flowing, low temperature silver brazing alloys that are easy to use and give strong neat joints.

• General purpose alloys with medium flow, melting ranges and cost.

• Low silver content brazing alloys that fill wider joints and produce larger fillets.

• The Silver-flo range are all cadmium free and suitable for the manufacture of food and drink handling equipment.

 

What Materials can be Joined with Silver-flo Products?

• The following materials can be joined with the Silver-flo range of alloys and a suitable flux

• Copper and copper alloys including brasses, bronzes, nickel silvers, aluminium bronze and copper nickel

• Nickel and nickel alloys

• Steel - a wide range including carbon and low alloy steel

• Stainless Steels

• Tungsten carbide and PCD segments

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Please Note:

• These products cannot be used to braze aluminium, magnesium and their alloys

• The lower melting point products are recommended for copper alloys with more than 2% lead content

• Aluminium bronze and brasses with more than 2% aluminium require Easy-flo Aluminium Bronze flux

• High zinc brasses generally require the use of an alloy with more than 16% silver

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Flux Coated Silver Solder Rods

The most popular of the General Purpose Silver Brazing Alloys can be supplied with an especially formulated flux coating which is designed to be particularly fluid and active as the flux is applied relatively late in the brazing cycle. These rods offer the advantages of consistency, safety and convenience when compared to using a bare rod and separate flux paste.

These rods are typically supplied with a white flexible flux coating, however other colours may be available and it is also possible to apply printing to the rods.

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Silver Solder Rods

These alloys are the optimum choice for a large range of industrial metal joining applications. The free-flowing properties of these alloys, coupled with good joint strengths means that they find use when joining dissimilar parent metals (e.g. stainless steel, mild steels, brasses, bronzes and copper) in a wide range of environments, from industrial cooling to food and pharmaceutical manufacture.