Aerospace Material Specification 4775 is nickel alloy BNi-1 in welding wire, welding rod, powder, and paste. Typically used for joining corrosion and heat resistant steels and alloys requiring corrosion and oxidation resistance at elevated temperatures.
Ni: 73% | C: 0.75% | Si: 4.5% | Cr: 14% | B: 3.1% | Fe: 4.5%