| 摘要 |
PROBLEM TO BE SOLVED: To obtain a spark plug electrode material which has excellent spark consumption resistance in an internal combustion engine. SOLUTION: The electrode material has a composition containing, by mass, 10 to 25% Cr, 0.3 to 3.2% Al, 0.2 to 2.2% Si, 0.1 to 0.8% Mn, <0.001% Mg and <0.002% S, and, if required, further containing 0.0005 to 0.01% B, and the balance Ni with inevitable impurities.
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