Because of the excellent fatigue resistance, beryllium-copper is widely used for springs, pressure responsive diaphragms, flexible bellows, connectors, contacts and relays, which are all subject to cyclical loading. The anti-galling, strength and good corrosion resistance led to the widespread use of beryllium-copper for down-hole drilling tools for the oil and gas industry. As the best substitution of beryllium copper alloys, Nexteck Technologys' copper titanium alloy can also be used in these applications.

In the fully heat treated and cold worked condition beryllium-copper is the hardest  and strongest  of any copper alloy.

It is similar in mechanical properties to many high strength steels but, compared to steels, it has better corrosion resistance (approximately equivalent to nickel silvers), higher electrical conductivity and higher thermal conductivity. It is also non-sparking and non-magnetic. Beryllium-copper should only be specified where its unique combination of properties can be fully exploited.

The main product forms for beryllium-copper are sheet, strip, wire, rod, tube and forgings. Castings are available.

The inhalation of beryllium in a finely divided form can cause a serious lung condition in some individuals. Precautions must therefore be taken in melting, casting, machining and welding of beryllium-copper. However, in service beryllium-copper is perfectly safe to handle and use. Copper titanium alloy , as a substitution material of beryllium copper, are a more friendly alloy for usage.