Alloys or coating materials composed of rhenium and tungsten, molybdenum or platinum group metals are widely used in the electronics industry because of their high melting point, high resistance, strong magnetic properties and good environmental stability. Tungsten wire doped with 3%-20% Re or H₄ReO₄ coated tungsten wire is not as brittle as tungsten wire, but can improve its elongation and resistance, and has high impact and vibration resistance, so it is widely used in vacuum technology and Its important use has been shown in electronic devices or filaments in places prone to vibration, and molybdenum-rhenium cermet anodes have been practically used. In recent years, a rhenium-based composite material is used as a basic material for ultra-high temperature emitters, and its thermionic discharge effect is increased by 20%, the current density is increased, and the thermal discharge performance is improved.

Coatings and Welding Materials
Using rhenium's high melting point and excellent anti-corrosion and wear-resistant properties as coatings, such as rhenium-coated metal wires, sheets or tubes, can achieve the purpose of preventing acid, alkali, seawater or sulfur compounds from being etched, so it is used for Maritime and chemical sector; Re-NiRe-Mo or R-W used as coating for instrument components, rocket warheads and their engines.
Adding Re to W or Mo alloy not only increases its strength, but also improves its plasticity and welding performance, and can be used as an electrode for welding W or Mo devices.
Other uses
Medical radioactive rhenium-phosphoramidate compounds can treat cancer, KReO4 can be used as a sensitizer for the preparation of color photographic films, etc.