BrazeLet^® Ni613DW-9005

The nickel-based brazing alloy BrazeLet Ni613, features a best in class wetting behaviour on stainless steel material in vacuum or protective atmosphere (dry hydrogen or argon). Its high level of alloyed chromium results in a superior hot gas and acid corrosion resistance. The brazing alloy is best suited for brazing heat exchangers such as exhaust gas recirculation (EGR) coolers in automotive or drinking water applications. Compared to most of the standard nickel-based brazing alloys, BrazeLet Ni613 is able to fill larger gaps without brittle phase lines or cracks. The resulting micro hardness in the brazed joint microstructure is less than half when compared to BrazeLet BNi5. This leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

BrazeLet Ni613DW-9005 is a water-based brazing paste that can be used for dispensing applications, typically found on heat exchanger inlet and outlet tubes, the housings of 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. BrazeLet Ni613DW-9005 sticks on all bevel and vertical positions without the need for pre-drying but is easily removed using water. The binder prevents preoxidation of brazing filler metal powder in marginal furnace atmospheres or in controlled atmosphere brazing with H2, N2/H2 or Ar. This results in a residue-free brazed joint.

The properties of BrazeLet Ni613DW-9005 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 different sized cans for refilling of smaller cartridges for manual applications. For best performance when opening a can from stock, it is always recommended to stir it.