EMI Shielding: Spring-Line®
SPRING-LINE beryllium-copper gaskets combine high levels of EMI shielding effectiveness with spring-finger wiping and low closure force properties. The high performance qualities of beryllium-copper - high tensile strength, excellent anticorrosion properties, and superb electrical conductivity - make it an ideal material for EMI shielding over a broad frequency range.
Material Specifications – Beryllium-Copper Alloy 25
Chemical Composition
| Material |
Composition |
| Beryllium |
1.8-2.0% |
| Cobalt plus Nickel |
20% min |
| Cobalt plus Nickel plus iron |
60% max |
| Copper |
Balance |
| General plating thickness |
2.6 microns |
Mechanical and Electrical Properties
| Property |
Description |
| Tensile Strength |
407-475 psi |
| Yield strength |
350-430 psi |
| Hardness |
Rockwell C38-44 |
Pressure-Sensitive Adhesive
- Acrylic adhesive
Service Temp. -67 - 450 F
- 48 hour cure time with high peel and shear strength
- High resistance to solvents
- 12 month PSA shelf life
Recommended Mating Surface
| Plating
Finish |
Recommended
Mating Surface |
| Bright
Copper |
Brass, Copper, Nickel-Copper
Alloys, Monel, Stainless Steel, Silver |
| Bright
Nickel |
Brass, Cadmium, Carbon Steel,
Copper, Iron, Nickel, Stainless Steel, Tin |
| Bright
Tin |
Aluminum, Aluminum Alloys, Beryllium,
Cadmium, Carbon Steel, Chromium, Nickel, Tin, Zinc |
