Iridium is the same type of precious metal as platinum.
It is characterized by its extremely high melting point and great strength. The melting point of iridium is approximately 680 7C higher than that of platinum and is difficult to melt even in the high temperatures produced by electrical discharges and combustion. Strength Iridium has high material strength compared to other materials and provides stable performance under heavier driving conditions. Electrical resistance Because the electrical resistance is lower than platinum and the base material of electrodes, nickel, iridium is suitable for use in spark plug electrodes. Hardness Iridium is harder than other materials and has great material strength.