iridiumtipped

Iridium-tipped describes a component or device that has a tip made of iridium or an iridium alloy. Iridium is a member of the platinum-group metals and is known for exceptional hardness, high melting point, and outstanding corrosion resistance. These properties make iridium suitable for small, wear-prone points in tools and devices, even though pure iridium is expensive and relatively brittle.

In practice, iridium-tipped parts are typically produced by attaching a small iridium or iridium-alloy point to a substrate such as steel, tungsten carbide, or another metal. The tip may be brazed, welded, or bonded to the base, and in some cases a very thin iridium coating is applied. The result is a point that maintains sharpness or conductivity longer under repetitive contact or abrasive wear.

Common applications include fountain pen nibs, where a hard iridium tip resists wear as ink flow and writing pressure abrade the nib point. Iridium tips are also used in long-life electrical and electronic components, such as iridium-tipped spark plug electrodes, which benefit from reduced wear at high temperatures. Other uses include wear-resistant contact points and precision tooling components where a small, durable tip is essential.

Iridium-tipped items are often marketed for their longevity rather than their bulk material properties, reflecting the cost and specialized nature of iridium. The term emphasizes the functional tip rather than the entirety of the instrument.