General Characteristics

Tin bronzes can be brazed with silver, copper-zinc and tin-lead solders. It is undesirable to braze high tin bronzes with copper-zinc brazing alloys due to the proximity of the melting point of the brazing alloys and the melting point of the base metal. Soldering of tin bronzes is performed by any known methods: by gas-flame torches, soldering iron, heating by HFC, contact heating, in furnaces with controlled atmosphere, in salt baths. In this case, the heating of parts should be carried out gradually, since the base metal at high heating rates is prone to brittleness.

Lead Bronzes.

They are brazed with fluxes used in soldering of tin bronzes. The solder joints must be fluxed very carefully, because the lead oxides that form on the surface can prevent the solder from flowing into the gap.

Manganese Bronzes.

They are brazed using orthophosphoric acid. High-temperature brazing of manganese bronzes is made with the use of fluxes, which contain fluorides and fluoroborates of alkali metals.

Beryllium bronzes

They are considerably more difficult to braze than other copper alloys; they should be used with silver flux solder immediately after mechanical stripping.

Copper-nickel alloys

Solderable with any solder and method as well as pure copper. Atmosphere controlled brazing with copper in a furnace must be done at high heating rates because the base metal dissolves in the solder when brazing for long periods of time, greatly reducing the strength of the weld.

Aluminum bronzes.

Have high mechanical properties among copper alloys, so they are widely used in mechanical engineering. To avoid oxidation and the formation of brittle intermetallides, such bronzes should be brazed in the seam using rapid heating methods. By introducing nickel into the solder, the strength and ductility of aluminum bronze joints are increased.

Other types of bronzes

Simple bronzes (double copper alloys with aluminum) and more complex bronzes with iron, manganese, nickel and other elements are used in many different industries. Oxide film is formed on the surface of silicon and aluminum bronze, which is difficult to remove with conventional fluxes. Before soldering, you need to treat the product in hydrofluoric or hydrofluoric acid.

Buy, price

Evek GmbH sells bronze products at an optimal price. It is formed taking into account the rates on LME (London metal exchange) and depends on the technological features of production without including additional costs. All batches of products have a certificate of quality for compliance with the standards. With us you can buy in bulk the most various products for large-scale productions. The wide choice, exhaustive consulting of our managers, reasonable prices and timeliness of delivery determine the face of our company. There is a system of discounts for wholesale purchases.