Dave, I have used Ti as a stirrer impellor in the manufacture of tin based (Sn>90%) whitementals (babbits). At temperatures of around 500C, it showed no erosion over a year or so, whereas stainless steel rapidly wore away. There is no numeric data for this and it was about 10 years ago but, based on this, I guess Ti would do well, if expensively, as a wavesoldering construction material. Roger Bilham In article <[log in to unmask] >, [log in to unmask] writes >Hi Guenter! Great information! One additional question - do you know if >the molten tin attack is more severe on base stainless steel alloys such as >the 301-304 alloy series or are the microalloyed 316/321/347 alloy series >equally attacked? Also, I have always made the assumption that titanium >with its tough natural oxide would be pretty immune to molten tin attack >but don't have any experience or data to back that up. I know that some of >the equipment vendors use titanium in the wave equipment but haven't seen >any information of molten tin attack. > >Dave > > > > >Guenter Grossmann <[log in to unmask]>@ipc.org> on 01/31/2002 >02:15:53 AM > >Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond > to Guenter Grossmann <[log in to unmask]> > >Sent by: TechNet <[log in to unmask]> > > >To: [log in to unmask] >cc: > >Subject: [TN] Antw: [TN] Wave Solder/NoPb Question > > >Dave > >We run trials with folks from ERSA. Actually, due to their knowledge, >erosion of the solderpot, the wave-nozzle, and the pump are considerable. >However, new equipment seem to be produced lead-free save with coated >stainless steel. It seems also as if it is possible to cover the parts in >danger with a organic coating (paint) which can be done during the downtime >when a service is done. The coating needs a refreshment every one or two >years I heard though one line with that coating seems to run now three >years in 24 hours shift without problems. What we also looked at are >upgrade kits for older equipment. I am right now writing a cost- >evaluation. > > >Guenter > > >. > >EMPA >Swiss Federal Institute for Materials Testing and Research >Centre for Reliability >Dipl. Eng. Guenter Grossmann > >8600 Duebendorf >Switzerland > >Phone: xx41 1 823 4279 >Fax : xx41 1823 4054 >mail: [log in to unmask] > >-------------------------------------------------------------------------------- >- > >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 >-------------------------------------------------------------------------------- >- > >-------------------------------------------------------------------------------- >- >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 >-------------------------------------------------------------------------------- >- -- Roger Bilham Roger Bilham Consultancy Tel: +44 (0)20 8467 8819 Fax: +44 (0)8700 548 613 Mobile +44 (0)7 941 122 446 --------------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------------