|Beryllium is used as an alloying agent which significantly increases the strength, hardness along with good corrosion and fatigue resistance of alloys. Beryllium-copper alloys (beryllium bronze) are used in a wide variety of applications, e.g. in is used in springs and spring contacts. Springs made from steel containing beryllium are elastic even in incandescence.|
Thin sheets of beryllium foil are used with X-ray detection diagnostics to filter out visible light and allow only X-rays to be detected.
Because it has a low thermal neutron absorption cross section, the nuclear power industry uses it in nuclear reactors as a neutron reflector and moderator.
Aluminate of beryllium is used as an active laser medium, laser crystals tend to be round, with a pale brown tint.
Beryllium oxide is useful for many applications that require an excellent heat conductor, with high strength and hardness, with a very high melting point, and that acts as an electrical insulator.