Archived posting to the Leica Users Group, 1998/09/21
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]is the piece Titanium or Titanium FINISHED brass? - -----Original Message----- From: Dan Cardish <dcardish@microtec.net> To: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us> Date: Monday, September 21, 1998 3:10 PM Subject: Re: [Leica] Lens wt vs finish->Now question about titanium >You make it sound as if titanium is not sutable for camera bodies either! >Thank you for clarifying the issue. > >Dan C. > >At 03:26 PM 21-09-98 -0400, Frank wrote: >> >>Dan Cardish wrote >> >>"I have been told that titanium is no more coslty than steel, and not any >>more difficult to machine." >> >>Sorry Don you have been told wrong. >> Loads of "high tech" materials are used in consumer goods for marketing or >>fashion reasons only. (They are often used inappropriately by engineers as >>well!) >[snip] >>Titanium is certainly excellent at corrosion resistance but the 6Al4V >>normal alloy is not especially strong and all Ti alloys are extremely notch >>sensitive and prone to cracking. Also because of its low Youngs modulus >>Titanium parts are not very stiff. Still its a good material for a very >>limited number of applications. It is specified far to often for >>fashionable rather than technically sound reasons! >> >>Ti does not make a very good choice for a lens barrel in my view. >