What is the Difference Between Iridium and Platinum Spark Plugs?

[DiDominic]

Differences between iridium and platinum spark plugs: 1. Different hardness: Iridium spark plugs have higher hardness, better durability, and longer service life; platinum spark plugs have lower hardness. 2. Different ignition speeds: Iridium spark plugs ignite faster; platinum spark plugs ignite slower. 3. Different melting points: Under high-temperature conditions, iridium spark plugs can maintain more stable ignition performance, their center electrodes can be made thinner, require lower ignition voltage, and exhibit improved discharge performance; platinum spark plugs have a lower melting point than iridium, but under normal conditions, platinum spark plugs can also deliver excellent performance. Moreover, platinum spark plugs aim for stable performance, and under normal circumstances, most can last up to 100,000 kilometers.