Archived posting to the Leica Users Group, 2003/07/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Kurt, I certainly didn't mean the white metal from which they cast children's toys!!!! I believe it is a zinc alloy and I am sure that it is well up to the task of protecting Leicas. I'm not complaining about it; I've had wonderful service from my Wetzlar M6, my main user body. But i don't give it the kind of hard use that a working professional does. I doubt that Leica used the sheet metal you describe as I understand that the tops for M6's were cast, not stamped. I too never heard the phrase "titanized" till its current Leica use. If I had seen that word out of our context, I would have thought it referred to a Titanic-style disaster!!!!!!!!! All the best. Seth LaK 9 - ----- Original Message ----- From: "khmiska" <khmiska@umich.edu> To: "Seth Rosner" <leica-users@mejac.palo-alto.ca.us> Sent: Tuesday, July 22, 2003 12:47 PM Subject: Re[2]: [Leica] M6 Titanium or Titanized? > Hello Seth, > "White metal" for the top plate of the Leica M6? I seriously doubt > that. > > Referring to "Materials Handbook", 14th edition, by Brady, Clauser and > Vaccari, "White metals. Although a great variety of combinations can > be made with numerous metals to produce white or silvery alloys, the > name usually refers to the lead-antimony-tin alloys employed for > machine bearings, packings, and linings; to the low-melting point > alloys used for toys, ornaments and fusible metal; and to the type > metals." > > Now, there is a material called "white metal sheet." Again, I quote, > "White metal sheet now much used for making stamped and formed parts > fior custome jewelry and electronic parts is zinc with up to 1.5% > copper and up to 0.5% titanium. The titanium with the copper prevents > coarse-gain formation, raising the recrystallization temperature. The > alloy weighs 2% less than copper and it plates and solders easily." > > It may well be that this is what Leica uses. As to whether titanium > can be plated out onto this alloy is another question entirely. Just > because you want to do this, doesn't mean that it is possible. > > Also, what is this word "titanized?" I have never seen this in all my > years as an editor of "Material Engineering." > > Regards > > Kurt > > > -- > Kurt H. Miska > GERMAN BUSINESS TRANSLATIONS > Ann Arbor, Michigan > khmiska@umich.edu > http://www-personal.umich.edu/~khmiska/ > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html