We use thousands of Rf shields per month, our shields are not plated in
general. We use an alloy 770 (or alloy 752) half hard temper as the base
material. Both have excellent solderability, and in general good electrical
spec. the thermal coefficients are also good for electronics. Since the
material is silver by nature no plate is required, and the shelf life of the
finish is indefinite.

Hope this helps.
Dan
P.S.:
Alloy 770; 55%Cu, 27%Zn, 18%Ni, seems to be most common in domestic sources.
Alloy 752; 69%Cu, 17%Zn, 18%Ni, seems to be most common with Asian sources.

---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
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 delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------