I don't have direct experience with IT stuff but we use it in professional audio equipment. The advantage is that the paint process can omit coverage of the internal face where the plating provides protection and is cosmetically acceptable. Edges may still require painting to prevent corrosion.
I have a hunch that failure of the plating to 'wipe' over the edge during punching may be due to reduction of the plating to save money. When there is a significant plating thickness the wiping process is intrinsic and cannot be prevented but with 'minimum' plating thickness the process will breakdown. There are numerous types of 'plating' and corrosion prevention applied by the sheet manufacturers. Try visiting www.bethsteel.com 'galvalume' for some technical introduction. I believe that if you want edges that don't corrode you can get the right material by coordination between your engineers and purchasing people. But the drive to cost cut works in the opposite direction. Good Luck (Englishman In New York) ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
