Hi All, Has anyone tried an ornamental iron shop for wrought-iron? This is close to pure iron with silica in the form of slag stringers. Cast iron on the other hand will have a high carbon content with the carbon forming small flakes distributed throughout and causing the gray coloration. I have a table showing various cast irons to cantain 1.75 to 4.0 % carbon and wrought iron as .01 to .08 % carbon. While I'm on, I have moved and am now operating my long period horizontal in Mitchell, SD. It's awfully quiet in comparison to Las Vegas. Seismically and citily. Randy -----Original Message----- From: barry lotzTo: PSN-L Mailing List Date: Sunday, September 03, 2000 10:05 AM Subject: Iron source >Hi > Since it's been so quiet .... It has been mentioned that iron makes >a better material for sensor feedback coil transducers than steel. I >have two questions which maybe someone can help. Do manufactured speaker >coils have a better grade of material for use in feedback coils? I have >looked around a little but can't seem to find a source of iron plate or >round stock. Any thoughts? >Regards >Barry > >__________________________________________________________ > >Public Seismic Network Mailing List (PSN-L) > >To leave this list email PSN-L-REQUEST@.............. with >the body of the message (first line only): unsubscribe >See http://www.seismicnet.com/maillist.html for more information. __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>