Tungsten plate melting point is the highest of all metals, the hardness is also very high, so it is often used to produce heat and wear alloy, such as tungsten and chromium, cobalt, carbon alloy is often used to produce such as aero-engine valve, turbine impeller and other high-strength wear resistant parts.
Alloys of tungsten and other refractory metals, such as tantalum, niobium, molybdenum and rhenium, are often used to make parts with high thermal strength, such as the nozzels of aerospace rockets and engines.