Do you know what are the common electromagnetic shielding materials?

The principle of electromagnetic shielding is to use the reflection, absorption and guidance of electromagnetic energy flow by the shield, which is closely related to the charge, current and polarization phenomenon induced on the surface of the shielding structure and inside the shield. Electromagnetic shielding refers to the shielding of the electric field (E field), which usually has a wide range of shielding materials.
1. Conductive elastomer lining (conductive rubber)
Second, EMI conductive foam lining
Conductive foam liner has good shielding performance, when encountering radio waves, it will be reflected, absorbed, and provide excellent shielding effect according to the nature of the object, and has a very high cost performance, is the latest and most widely used shielding material.
Third, EMI metal reed, beryllium copper shrapnel, stainless steel shrapnel, electromagnetic shielding reed, etc
Beryllium copper reeds are finger reeds made of special alloy beryllium copper that combine high-grade EMI shielding and elastic hook and jaw rubbing with small sealing force characteristics. The high performance parameters of beryllium copper: high tensile strength, good corrosion resistance and good electrical conductivity, make it an ideal EMI shielding material for use in a wide range of electronic devices with EMI/RFI or ESD problems. There are different finished products of bright copper, bright nickel and bright tin, which are installed on different metal surfaces to reduce galvanic noise and galvanic corrosion between different metals.