The type of metal that you specify may have an impact on an RFI / EMI shield’s performance. In general, shielding against frequencies of 15 MHz or lower is a bulk material effect, and can best be served by employing a ferromagnetic metal such as steel. Consider specifying a metal alloy called nickel silver (55% copper; 27% zinc; 18% nickel; and not a speck of silver) for RFI shields and EMI shields that will be hand soldered or re-flow soldered with flux. This category is normally made of nickel silver, phosphor bronze, brass, SPTE. For further information, please see the individual introduction for each picture. The webpage shows a portion of our products only. Please send us an email if you would like to discuss your own design with our representatives.