Tungsten pins, also named tungsten needles or tungsten electrodes, are a typical tungsten product with purity of 99.95%. It has a silver-white appearance, a slender structure, a length of 20mm-1000mm, and a diameter of 0.3mm-10mm. Usually, the product is customized.
The pin is mostly made from pure tungsten and sometimes tungsten alloy, with the characteristics of high hardness, greater tensile strength, good wear resistance, excellent ductility, and excellent electrical conductivity. However, if a fine tip is required, it is very easy to bend or break during transportation or using.
These pins can be divided into different kinds of products, such as rod shape or a rod with a sharp tip. Although their characteristics are the same, their applications show slight difference.
The rod-shaped electrode is a slender cylindrical pure tungsten or tungsten alloy, which is mainly used as an electrode for argon arc welding. During welding, an arc is generated between the tungsten electrode and the workpiece, and under the action of the arc heat, the filler metal will melt with the workpiece to form a weld.
The pointed needle can be simply understood as pure tungsten or tungsten alloy with a sharp end at one or both ends, and is mainly used as an instrument probe, such as a digital four-probe tester. The distance between the four needles in the digital four-probe tester cannot be too long or too short, and each has different dings.
In addition to being used as argon arc welding electrodes and instrument probes, tungsten pins can also be used for cathode emission and for engraving metal surfaces, cutting particles in rubber wool, handling single particles, and blowing crystal embryos and glass.
At Chinatungsten Online, we pride ourselves in offering our customers sophisticated pins/needles machining and fabrication capabilities. We’ve honed our processes during our decades of successfully working with molybdenum and tungsten, and are dedicated to supporting your precision machining and fabrication requirements.
