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Fos Tech (Foscoper)
FOS TECH (Foscoper) Binary Copper and Phosphorus alloy with excellent performance in its application and low cost in the brazing of Copper and its Alloys.
Widely used in the Refrigeration, Hydraulic and Electronic Components Industry.
Ideal for joining copper pipes without using flux.
FOS TECH is not recommended for brazing Iron and Nickel Alloys, due to its low penetration power and deformation when machined.
INFORMATION: FOS TECH 1 contains the lowest level of phosphorus in the series with the exception of FOS TECH 9. Compared to other products it has superior ductility. However, it also has the longest solidification range and the lowest fluidity. Therefore, it is normally used for brazing joints with larger gaps, on the order of 0.07 – 0.13 mm.
INFORMATION: FOS TECH 2 has good fluidity and penetration at brazing temperatures in joints with small gaps. The best results are obtained with gaps of the order of 0.03 to 0.08 mm. As FOS TECH 2 has a lower phosphorus content than BR-FOS TECH 7, its fluidity is also lower at the same brazing temperature.
INFORMATION: FOS TECH 6 has a chemical composition very close to the eutectic point of the Cu-P phase diagram and has a relatively low melting temperature. With its excellent fluidity, it is suitable for welding joints with very small gaps. It presents the highest fluidity of the CuP alloy series. The best results are obtained with gaps of the order of 0.03 to 0.08 mm.
INFORMATION: BR-FOS TECH 7 has very good fluidity and penetration at brazing temperatures in joints with small gaps. The best results are obtained with gaps of the order of 0.03 to 0.08 mm. In the Refrigeration segment, BR-FOS TECH 7 is the most recommended for application, being considered the reference material.
INFORMATION: FOS TECH 9 has a very low phosphorus content compared to the CuP group, being applied in a few special cases as it has the lowest fluidity and highest brazing temperature of the series.