| Beryllium-Copper |  |
Consider the outstanding
qualities of BERYLCO alloys.
These alloys combine the very high
physical characteristics of some sophisticated stainless steels
with the qualities of copper alloys.
| | For connectors and parts for electromechanical applications working in alternate flexion, or being subject to a high number of insertion / extraction cycles. |
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| For producing mechanical part such as : bearings, cams, gears demanding a good wear resistance. |
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| Clips, washers, springs, diaphragms, bellows, connectors, etc. requiring a high fatigue resistance. |
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| Contacts, relays, switches, all springs submitted to multiple reverse loadings. |
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| Shell moulding, plastic moulds and injection, moulding nozzles and cores, bearings, valves. |
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| For applications in the automotive, aerospace, aeronautical, cryogenic industries. |
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| For parts in electrical, electronic, watch, instrument and welding industries. Plunger tips. |
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| For use in corrosive atmosphere : marine and chemical industries. |
 non sparking | For safety tools when sparks can cause fire or explosion : mining, gas and petro- chemical industries. |
Beryllium copper's main characteristics
as a current carrying spring are as follows:-
High strength
Beryllium copper can attain a high tensile strength, to a maximum of 1480 MPa and therefore can endure very high bending stresses as a spring material.
High electrical conductivity
The electrical conductivity of Beryllium copper is 20% to 50% lACS, depending on chemical composition and heat treatment applied, Beryllium copper is the best material for high current density springs because of the low heat generation resulting from this high electrical conductivity.
High fatigue strength
Beryllium copper is known to have high fatigue strength because it shows an excellent resistance to fatigue under reverse bending and it continues to have a long life and high reliability.
High elasticity
Beryllium copper has an extremely high tensile strength to Young's modulus ratio. This contributes to the fabrication of a compact spring with good response to the load applied.
Elevated temperature properties
Beryllium copper is a precipitation hardening alloy with excellent properties at elevated temperatures and can be used in a wide range of temperatures
Good formability
Beryllium copper can be formed into complicated shapes in a solution annealed state. High spring properties such as the highest mechanical properties, good electrical conductivity and heat resistance will be obtained by proper heat treatment after forming.
Corrosion resistance
Beryllium copper has good corrosion resistance nearly equal to nickel silver and is not susceptible to hydrogen embrittlement.
Further Details:
Designations, Chemical Compositions and SpecificationsCharacteristics and Mechanical Properties