Your best bet is most likely to go with a good conductive epoxy that has thermal properties which can withstand the demands you have. Here at Vines we have had excellent results using conductive epoxy, although we have not pushed the end environment quite as harsh as you are requiring. [log in to unmask] ______________________Reply Separator__________________ Hi all, Does any one have any suggestions for a solder type to attach Elkonite to aluminum? My primary concern is the CTE differences; this is for an assembly that sees temps from -65C to almost 200C ... thanks for any thoughts! Sheila Smith, Tracor AES *************************************************************************** * 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] * ***************************************************************************