BrazeLet^® Ni5DW-9003

The nickel-based brazing alloy BrazeLet BNi5 has good wetting behaviour on stainless steels and nickel-based superalloys and is suitable for brazing in vacuum or protective atmospheres (hydrogen or argon). The high level of alloyed chromium results in a good hot gas and acid corrosion resistance. The high melting range of BrazeLet BNi5 makes it suitable for applications working at very high temperatures, for instance EGR coolers for trucks, automotive metal catalytic converters and turbine vanes. It is also a commonly used filler material for industrial heat exchangers. Joint properties can be further improved by employing a diffusion hold after brazing.

The brazing paste BrazeLet Ni5DW-9003 can be used for dispensing applications, typically found on heat exchanger inlet and outlet tubes, housing to core joints and hole plate to tube joints. It can be dispensed by using standard air pressure dispensing units. For better precision, screw dispense units are recommended. The paste sticks on all bevel and vertical positions without the need of pre-drying but is easily removed using water.

BrazeLet Ni5DW-9003 properties allow reliable application in a wide speed range as a result of the dispensing equipment / automatisation as well as the needle diameter. The paste can be delivered in cartridges for use in automated applications or different sized cans for refilling of smaller cartridges for manual applications. For best performance, it is recommended to first stir the paste.