Nickel-based brazing filler metals

The Nickel-based brazing alloy BrazeLet^® BNi2 provides high strength when brazing stainless steel material in vacuum or protective atmosphere. The brazing alloy is typically used for brazing heat exchangers such as EGR coolers in automotive or tap water applications in home or industry where high corrosion resistance is not required.

BrazeLet BNi2 contains boron as melting point depressants and can therefore be used at relatively low temperatures.

Composition

ISO 3677, B-Ni82CrSiBFe-970/1000
ISO 17672, Ni 620
ANSI/AWS A5.8, BNi-2
UNS N99620

Melting range

970-1000°C

Min. brazing temperature

1050°C

BrazeLet^® BNi5 is a Nickel-based brazing alloy with a good wetting behaviour on stainless steel material in vacuum or protective atmosphere brazing. 

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 and automotive metal catalytic converters.

Composition

ISO 3677, B-Ni71CrSi-1080/1135
ISO 17672, Ni 650
ANSI/AWS A5.8, BNi-5
UNS N99650

Melting range

1080-1135°C

Min. brazing temperature

1150°C

BrazeLet^® BNi7 is a Nickel-based brazing alloy that provides high strength when brazing stainless steel material in vacuum or protective atmosphere. Typical applications for this brazing alloy are heat exchangers not requiring high cossosion resitance, for instance automotive EGR coolers and domestic or industrial tap water applications.

BrazeLet BNi7 contains phosphorous as melting point depressants and can therefore be used at relatively low temperatures.

Composition

ISO 3677, B-Ni76CrP-890
ISO 17672, Ni 710
ANSI/AWS A5.8, BNi-7
UNS N99710

Melting temperature

890°C

Min. brazing temperature

980°C