Hi Joe, I would recommend to go to IPC-TR-484. 'Results of IPC Copper Foil Ductility Round Robin Study' for measured round robined properties of commercial ED foils (E1, E2, E3 &E4) from 3 vendors an rolled foils (W5, W7 & W8) from 2 vendors of 1/2, 3/4 1 and 2 oz/sq.ft. thickness. Thickness variations are reported, as are measeured tensile strength ranges, raw fatigue data are given, fatigfue ductility means and 2-sigma ranges are given for both machine- and cross-machine directions. Elongation values are useless for foils for engineering purposes, they do however serve as adequate process control indicators. Bulge test data are not much better. That is why the fatigue ductility test was developed in the first place. Werner Engelmaier Engelmaier Associates, Inc. Electronic Packaging, Interconnection and Reliability Consulting 23 Gunther Street Mendham, NJ 07945 USA Phone & Fax: 201-543-2747 E-mail: [log in to unmask] *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************