SPARK PLUG

摘要

A spark plug is provided in which the electrodes have improved high-temperature oxidation resistance and each has, bonded thereto, a chip having improved spark wear resistance, oxidation resistance, and bond reliability. The spark plug (1) includes ignition parts (31) and (41), the ignition parts (31) and (41) each having a weight of 1.5 mg or more. The center electrode (5) and the ground electrode (27) each comprises Ni as the main component and contains 0.005-0.10 mass% C, 1.05-3.0 mass% Si, up to 2.0 mass% Mn, 20-32 mass% Cr, and 6-16 mass% Fe.