Hi Technetters, I understand that the 'anti-tombstone' solder paste contained 0.4% silver. Some people told me that the melting point is 179 deg.C and other said it was 183 deg.C. I am wandering which is correct. And what about the percentage for the tin & lead, whether the tin makes up 63% of the alloy & the lead consists of 1.6%, or some other number. Thanks. Regards, Poh --------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8e 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/html/forum.htm for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------