Aerospace Material Specification 4782 is nickel alloy BNi-5 in welding wire, welding rod, powder, and paste. Typically used for joining corrosion resistant alloys for resistant joints at elevated temperatures.
Ni: 71% | Si: 10% | Cr: 19%
Further reading: AMS 4779 Nickel Alloy.
Further reading: Nickel Alloy BNi-1a brazing filler metal.