The maximum diameter of a tungsten needle can vary depending on the manufacturing process and the specific application it is intended for. However, in general, tungsten needles can be made with diameters ranging from as small as a few micrometers (µm) to several millimeters (mm) or larger. In some cases, tungsten wires with diameters exceeding 1 centimeter (cm) can be used to make specialized tungsten needles.
