Tungsten machining

automotiveindustrialfor aeronautics

Tungsten has excellent high-temperature properties including the highest melting point of all metals and the lowest thermal expansion of all pure metals, and is used in many high-temperature applications. Also, due to its high density comparable to that of gold, it exhibits superior radiation shielding performance. Tungsten is an extremely hard and crack-sensitive metal which is brittle at room temperature. Its extreme hardness causes excessive tool wear, and its brittleness makes the material prone to chipping and cracking during and after machining. Therefore, it requires special handling and machining techniques. Top Seiko has provided custom-machined tungsten parts to customers in a wide range of industries. Complex and precision machining of tungsten is indeed our specialty. We stock tungsten in various sizes and thickness to shorten lead times for customers with urgent needs. Applications Key Properties ■High temperature resistance ■Low thermal expansion ■High thermal conductivity Having a melting point of 3422 °C, tungsten can easily withstand even the most intense heat. Combined with its extremely low thermal expansion, it resists distortion and warping at elevated temperatures. In fact, it has a coefficient of thermal expansion close to those of alumina and borosilicate glasses. Its high thermal conductivity coupled with its high melting point makes tungsten ideal material for efficient and quick heat transfer even at high temperatures.