The alloy has a lower carbon content than nickel 200. The electrode has good fabricability, and it is highly resistant to corrosion. The material is used in temperatures above 3150 C which grade 200 cannot withstand due to the formation of graphite. However, the alloy is prone to sulfurization in the temperatures. The electrode is also resistant to most alkalis and acids. Neutral and alkaline water slightly erodes the rod. The rod can also withstand all gases and hydrogen chloride in temperatures of up to 5000 C. The filler metal is not affected by the intergrannular attack.
Properties of nickel 201 electrodes
Mechanical- The alloy has a tensile strength of around 450MPa while the yield strength is 150MPa. The elongation capacity of the wire is high at 45% in 50mm.
Chemical- The components of the nickel 201 filler metal include carbon, manganese, silicon, copper, sulfur, iron, and nickel. The nickel percentage is around 99% while carbon content is lower than in nickel 200 electrodes.