Most Soldering Irons have interchangeable tips which vary in size and shape dependent on the type of soldering work you are doing. Soldering tips have an angle range from 22 to 90. Most soldering iron tips are made of a copper core plated with iron. The copper is used for the heat transfer and the iron plate is durable. Copper corrodes easily and can eat away the tip especially in lead free soldering.
Soldering Tips can be used with various Soldering Irons so when choosing a soldering tip, it's important to ensure it is compatible with the soldering iron.