Characteristics
Copper beryllium’s countless applications result from its unique performance characteristics:
- Excellent spring properties due to hardening after processing
- High strength
- Extremely high flex life
- High conductivity
- Resistant to environmental influences such as ozone, atomic radiation and light and also to solvents and corrosion
- Not magnetically
Furthermore, copper beryllium can be used at a wide range of temperatures, is neither flammable nor combustible, and doesn’t emit gases. And what’s more, when used in the appropriate applications, it is self-cleaning, ie when used as door shielding for opening and closing doors.
Applications
Springs made from copper beryllium are used in a wide range of applications, for example in HF technology, measurement and control technology, nuclear physics, air and space travel and across the entire spectrum of electronic data processing.
Copper beryllium springs can be used to bridge a gap between two surfaces. They are able to bridge the tiniest but also the largest gap. The type of spring used depends on the nature of the particular application and the method by which it is affixed. The easiest way to affix them is by simply pushing them into place. The contact springs can then be additionally fitted with a T-lance or D-lance. Another method is screwing or riveting them into mounting holes.
The springs can also be soft-soldered. If this is the case, galvanic tinplating is recommended. We would be pleased to provide you with further information on this if required. Copper beryllium can also be condensor spot welded or vacuum electron beam welded. We are also able to realise your own specific requirements in relation to these procedures.
Range of Supply
| Material: | hardened unhardened |
|---|---|
| Surface: | polished nickel plated tin plated gold plated silver plated |
Safety
Copper beryllium presents the designer of contact elements, electrical, and electronic equipment with a unique combination of properties. Copper beryllium is a high-quality contact Material it combines outstanding electric conductivity with high mechanical strength. This is especially useful when further miniaturization is needed.
Physical Properties Copper-Beryllium 25 CuBe2 ½H
| Specific Gravity | 8,4 g/cm³ |
|---|---|
| Melting Point | 870 °C |
| Coefficient of Thermal Expansion (20-200 °C) | 17x10 -6/°K |
| Thermal Conductivity | 110 W/mK |
| Hardness | 370-440 HV |
| Tensile Strength | 1270-1490 N/mm² |
| Fatigue Strength, Load Application 100 Millions | 250-270 N/mm² |
| Modulus of Elasticity | 135 kN/mm² |
| Spring Bending Limit | 880-980 N/mm² |
| Electrical Conductivity | 12 m/Ω mm |
Adhesive Tape
We rely on the quality of TESA®. We use ‘tesa® 4962’, a double-sided adhesive tape consisting of a nonwoven backing and a tackified acrylic adhesive. More information and a detailed product description can be supplied on request or can be found on the manufactures website (www.tesa.com).
Upon request contact springs can also be manufactured and supplied with a conducting adhesive tape. In case of need alternative tapes of different manufacturers can be used.
Customized Springs
Zillkon Zillgitt GmbH Kontaktfedern manufactures contact springs according to customer’s specifications. This includes different shapes, forms and lengths.