Beryllium Copper Fingerstock Gaskets - Temas Engineering - #1

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TEMAS engineering srl - via Milano, 72 - 22070 Bregnano (CO) - ITALY tel. +39 031 772348 fax +39 031 773897 e-mail: info@temas.it web: www.temas.it 1 EMI/RFI SHIELDING PRODUCTS FINGERSTOCK GASKETS Application Due to their outstanding material and electrical characteristics, beryllium copper finger of different shapes and dimension are used in the following industries: Broadcasting, telecommunications industrial control, measuring and instrumentation, aerospace technology, nuclear physics and data processing. Contact fingers and rings made of beryllium copper are used at all ratio and microwave frequencies, for instance as contacts to valves and tuning components as well as for shielding. Material Properties The beryllium copper (CuBe2) used for our products is a quality tested quench hardening spring material. It is noteworthy for its yield point, tensile strength and elasticity, good electrical conductivity, high fatigue strength as well as its resistance to abrasion and corrosion. The good thermal conductivity coupled with hardness eliminates sparking. The raw material is non-magnetic and has an excellent temperature performance. Physical Characteristics Specific weight: 8.4g/cm3 Melting point: 900°C Coefficient to expansion: (20-200°C) 17x10 -6/°C Thermal conductivity: 0.27 cal/cm s °C 1.13 W/cm °C Vickers hardness: 350-430 Bending resistance at 108 cycles strength: 250-290 N/mm2 Modulus of elasticity: 135 000 N/mm2 Modulus of torsion: 47 000 N/mm2 Spring bending limit: 820-950 N/mm2 Electrical conductivity: 12.5-13 m/
mm2 Material Options • Material: hardened or unhardened • Finish: bright finish, silver, gold, zinc, bright tin, tin lead, bright nickel or according to customer specifications. Plating codes: see page 19 • Material in stock: hardened and bright finish or hardened and silver or tin plated 4-6 m. Components • As a single finger , contact strip or contact ring • Contact strips are carried as stock items • Almost all contact strips can be formed by the user into contact rings Special finger New shapes and special types available at short notice. Please note: While we believe the information in this document to be correct and in accordance with DIN or MIL standard, we cannot guarantee electrical specification and we accept no responsibility for any errors or misprints. Details are subject to change without notification. Type of Material BC: Beryllium Copper SS: Stainless Steel (upon request) BP: Phosphor Bronze (upon request) Surface Finish and Plating Codes -02 bright finish -03 gold -04 silver -15 zinc chromate/clear -17 bright tin -19 bright nickel -00 customer specification Ordering information EXAMPLE P/N: BC 0000-00 Surface Finish and Plating Part Number Type of Material