Archived posting to the Leica Users Group, 2003/07/22

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Subject: Re[2]: [Leica] M6 Titanium or Titanized?
From: khmiska <khmiska@umich.edu>
Date: Tue, 22 Jul 2003 09:47:37 -0700
References: <r02000000-1030-12377A8EBB4211D7A901003065F48752@[10.0.1.3]> <p06001a00bb4185e9d3e2@[10.0.1.42]> <003b01c34fb4$9bcd0c80$0201000a@basecamp2win> <p05111012bb41f71dff7e@[192.168.123.49]> <003f01c34fde$f574ea80$7d38030a@sroffice>

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/

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Replies: Reply from "Jack Herron" <jherron@theriver.com> (Re: Re[2]: [Leica] M6 Titanium or Titanized?)
Reply from Seth Rosner <sethrosner@direcway.com> (Re: Re[2]: [Leica] M6 Titanium or Titanized?)
In reply to: Message from Adam Bridge <abridge@mac.com> (Re: [Leica] Further digital exploration)
Message from Allen Graves <ahgraves@prodigy.net> (Re: [Leica] Further digital exploration)
Message from "Jim Laurel" <jplaurel@nwlink.com> (Re: [Leica] Further digital exploration)
Message from Karen Nakamura <mail@gpsy.com> ([Leica] M6 Titanium or Titanized?)
Message from Seth Rosner <sethrosner@direcway.com> (Re: [Leica] M6 Titanium or Titanized?)