Hi Steve - there is a much lower level of industry consensus on silver in terms of technical definition of the structure (e.g. is it a whisker or a dendrite). Dave Steve Smith <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 04/24/2009 03:20 PM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to Steve Smith <[log in to unmask]> To [log in to unmask] cc Subject Re: [TN] Plating on screws Don't forget silver. http://nepp.nasa.gov/whisker/other_whisker/silver/index.htm Regards, Steve Smith -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of David D. Hillman Sent: Friday, April 24, 2009 3:17 PM To: [log in to unmask] Subject: Re: [TN] Plating on screws Hi Roger - there are three elements that have been shown to form whiskers: cadmium, zinc and tin. Tin is the most famous but there are numerous cases of both zinc and cadmium whiskers too. Check out the NASA Goddard whisker website for examples of each. Dave "EIMCNews" <[log in to unmask]> 04/24/2009 10:44 AM To "'TechNet E-Mail Forum'" <[log in to unmask]>, <[log in to unmask]> cc Subject RE: [TN] Plating on screws Dave, I've been around plating a lot, especially zinc and I never heard of zinc whisker formation. Are you sure you don't mean tin whisker formation? If you really do mean zinc please direct me to some information about it. It's never too late in life to learn something new. Sincerely, Roger Mouton EIMC - Advanced Plating Technologies 949 481-5194 www.smartcatshield.com [log in to unmask] Notice of Confidentiality The information contained in and transmitted with this email may be confidential and is intended only for the individual or entity named above. If you are not the intended recipient, you are hereby notified that inadvertent disclosure of this information to you does not constitute a waiver of confidentiality privilege and that any review, disclosure, copying, or use of the contents of the email by you is prohibited. --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 ----------------------------------------------------- --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 15.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------