What are the materials of the motorcycle spark plug?

Motorcycle spark plugs come in a variety of materials; different materials have their own characteristics in terms of performance, service life, and applicable scenarios. The following are several common materials and their characteristics:

Nickel alloy spark plug

This is the most basic material, low-cost but with rapid degradation. Its electrodes have better resistance, hardness, and corrosion resistance, but they tend to accumulate carbon easily and have a relatively short service life, typically requiring more frequent replacements.

Platinum spark plug

Platinum spark plugs have more balanced properties, a longer service life than nickel alloys, better electrical conductivity and abrasion resistance, but are slightly inferior to those of iridium.

Iridium spark plug

Iridium spark plugs have excellent electrical conductivity, abrasion resistance, and a high melting point; they can withstand higher temperatures, the electrodes can be made smaller, ignition is more stable, and their service life is longer, making them a superior-performance option.

Platinum-Iridium spark plug (double iridium)

This is the best material for single-electrode spark plugs, combining the advantages of iridium and platinum, with performance superior to that of either iridium or platinum alone, exceptional stability, and the longest service life.