Tungsten is a refractory metal with a high melting point of 3422°C, which makes it one of the most thermally stable materials. As a result, tungsten needles can withstand high temperatures without degrading or melting, making them suitable for high-temperature applications such as welding, furnace heating, and thermocouple construction. In fact, tungsten has the highest melting point of all metals, which makes it a popular choice for high-temperature applications where other materials would not be able to withstand the heat.
