Ni base alloy for spark plug electrodes of internal combustion engines

摘要

An Ni base alloy for use in spark plug electrodes for internal combustion engines which consists essentially of, on a weight percent basis, 0.1 to 1.5% Si, 0.1 to 0.65% Mn, 3.1 to 5% Al, 0 to 2% Cr, 0 to 0.5% of one or more elements selected from the group consisting of Y and rare earth elements, 0 to 5% Co, 0 to 0.5% of Hf and/or Re, and the remainder Ni and incidental impurities.