Ni is the basis.
According to TU 14-1-223-72 in the alloy, the introduction of cerium is possible up to 0.020%; the presence of antimony, tin, bismuth and arsenic is not allowed for more than 1 point of the spectral analysis scale. Boron and cerium are introduced into the metal by calculation and chemical analysis is not determined. At the consumer's request, the bars are supplied with a carbon content in the range of 0.08-0.12% and in this case the alloy is marked EI929A.