Beryllium-Copper Gaskets

Transcription

1 STOCK SPRING-LINE Beryllium-Copper Gaskets SPRING-LINE Beryllium-Copper Gaskets SPRING-LINE beryllium-copper gaskets combine high levels of EMI shielding effectiveness with springfinger wiping and low closure force properties. The high performance qualities of beryllium-copper high tensile strength, excellent anti-corrosion properties, and superb electrical conductivity make it an ideal material for EMI shielding over a broad frequency range. SPRING-LINE shielding gaskets are available in bright tin, bright copper, and bright nickel finishes, and others upon request. Strips can be soft soldered or resistance welded without damage to their working surface. SPRING-LINE gaskets can be applied by edge mounting using integral clips, or by high tack, pressuresensitive adhesive (provided on some versions). Table 1 MATERIAL SPECIFICATIONS BERYLLIUM-COPPER ALLOY 25 AND PSA TAPE Chemical Composition Beryllium % Cobalt plus Nickel % min. Cobalt plus Nickel % max. plus Iron Copper Balance General plating to 6 microns thickness approx. (excluding exotic metals) Mechanical and Electrical Properties Tensile strength ksi min. Yield strength ksi min. Hardness Rockwell C38-44 Pressure-Sensitive Adhesive Tape Acrylic adhesive Service temperature range 55 to 230 C ( 67 to 450 F) 48 hour cure time with high peel and shear strength High resistance to solvents Minimum 12-month PSA shelf life Table 2 PLATING FINISH Bright Copper Bright Nickel (QQ-N-290) Bright Tin (MIL-T-10727) RECOMMENDED MATING AND MOUNTING SURFACES Brass, Copper, Nickel-Copper Alloys, Monel, Stainless Steel, Silver Brass, Cadmium, Carbon Steel, Copper, Iron, Nickel, Stainless Steel, Tin Aluminum, Aluminum Alloys, Beryllium, Cadmium, Carbon Steel, Chromium, Nickel, Tin, Zinc Ordering Procedure Standard SPRING-LINE gasket configurations are illustrated on the following six pages. Gaskets are supplied in 16 inch (40.6 cm) lengths, with the exception of configurations and 11833, which are supplied in 15 inch (38.1 cm) lengths. Strips can also be pre-cut to custom lengths. Use the following example for constructing SPRING-LINE gasket part numbers. Example: XXXX 81 designates Chomerics SPRING-LINE product line 02 designates PSA mounting tape (01 designates no PSA tape) designates the specific gasket configuration XXXX designates choice of plating finish: 2000 = clean and bright (unplated) 3000 = zinc plate per ASTM-B633, with clear chromate (color optional) 4000 = bright nickel 5000 = bright tin 6000 = electroless nickel per MIL-C-26074, Class 1 1

2 TWIST SERIES FOLD OVER PART NO XXXX (4.83) PART NO XXXX (2.41) (2.03) (4.45) 24 (609) MAX (5.80) (0.80) (1.50) (6.50) (4.45) (9.70) (4.80) (3.10) (4.19) PART NO XXXX (3.81) (6.10) PART NO XXXX (0.55) (4.57) (8.64) (1.78) (6.86) (4.19) PART NO XXXX (3.81) (7.90) PART NO XXXX (0.51) (4.83) (12.90) (10.10) (19.30) (1.78) (3.55). (5.60) PART NO XXXX NO SNAG PART NO XXXX (5.70) (6.40) (6.00) (9.40) (5.08) (15.00) (7.70).. Note: Tool Diameter (0.075 in.) located under PSA continued 2

3 SPRING-LINE Beryllium-Copper EMI Shielding Gaskets continued ALL PURPOSE PART NO XXXX PART NO XXXX (4.30) (0.15) RAD INSIDE TYP (5.33) (4.32) (4.78) (4.75) (8.13) (2.79) (7.11) (2.80) TOUCHES MOUNTING SURFACE PART NO XXXX PART NO XXXX (0.46) (3.00) (5.10) (8.89) (10.80). Note: Tool Diameter (0.050 in.) located under PSA (3.32) PART NO XXXX PART NO XXXX (8.71) (1.00) RAD INSIDE TYP (7.11) (5.85) (15.39) 0.6 (15) REF. (5.60) (2.00). PART NO XXXX PART NO XXXX (8.5) (6.40) (3.18) (7.11) (19.80) (12.19). MTL THICKNESS (0.152) 3

4 RIVET & TRACK PART NO XXXX PART NO XXXX.190 (4.83) (0.45) (4.75) (2.80) (0.55) (5.84) PUSH RIVET PUSH RIVET (4.10) (8.90) (9.60) (4.10) (10.40) (13.00) 15 (381) MAX Recommended Rivet Hole - (3.1) BETWEEN RIVETS (38.10) MAXIMUM HEIGHT (1.80) 15 (381) MAX BETWEEN RIVETS (38.10) MAXIMUM HEIGHT (2.00) EDGE MOUNT PART NO XXXX (4.62) (2.50) PART NO XXXX. EDGE MOUNT FOR PANEL THICKNESS (1.00) ( (4.75) (4.80) MAX WHEN (7.60) Note: Tool Diameter (0.050 in.) located under PSA PART NO XXXX PART NO XXXX EDGE MOUNT FOR PANEL THICKNESS (9.65) (4.80) MAX WHEN ( (8.66) (9.65) REAR VIEW SHOWING RIVET HOLES (2.54) (16.75) (4.5) (7.50) EDGE MOUNT FOR PART NO XXXX PART NO XXXX (5.35) DEFLECTION (5.08) (0.30) (9.50) RAISED AREA TO PREVENT SCRATCHING ABRASION (1.6) (9.53) (27.60) R7 BLEND RAD. IN INCREMENTS DEFLECTION FORCE (3.10) (6.0) continued 4

5 SPRING-LINE Beryllium-Copper EMI Shielding Gaskets continued PART NO XXXX (5.6) SLOT MOUNT PART NO XXXX (5.6) PART NO XXXX (6.73) (7.80) PART NO XXXX (3.50) 2 PLACES (4.32) SLOT (12.7) (4.32) (6.73) SLOT SLOT DIMENSIONS (13.50) R. INSIDE TYP (20.00) (7.60) (0.76) INSIDE R (14.00) MTL THICKNESS (0.152) (7.60) LARGE ENCLOSURE PART NO XXXX PART NO XXXX SOLDER OR WELD MOUNT (7.62) (22.61) (6.30) (3.90) (3.50) 24 (609) MAX (27.70) (6.60) (3.05) (8.70) 5