[PSUBS-MAILIST] Deep Sea Challenger

[Pete Niedermayr via Personal_Submersibles]

https://www.oceannews.com/feature-story/2014/08/29/technology-of-the-deepsea-challenge-expedition-part-3-of-3-deepsea-challenger
--------------------------------------------
On Thu, 12/25/14, Pete Niedermayr via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] Deep Sea Challenger
 To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
 Date: Thursday, December 25, 2014, 11:41 AM
 
 Try this link
 
 --------------------------------------------
 On Thu, 12/25/14, Pete Niedermayr via Personal_Submersibles
 <personal_submersibles at psubs.org>
 wrote:
 
  Subject: Re: [PSUBS-MAILIST] Deep Sea Challenger
  To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
  Date: Thursday, December 25, 2014, 11:34 AM
  
  Pressure Hull
  The 43-in. Diameter x 2.5-in. thick pressure
  hull is fabricated from high tensile steel EN26, invented
 in
  the 1940s for use in large Howitzer-type gun barrels. It
 is
  an alloy similar to that used on DSV Trieste’s pressure
  hull in its 1960 deep dive
  
  https://www.oceannews.com/feature-story/2014
  --------------------------------------------
  On Thu, 12/25/14, swaters at waters-ks.com
  via Personal_Submersibles <personal_submersibles at psubs.org>
  wrote:
  
   Subject: Re:
  [PSUBS-MAILIST] Deep Sea Challenger
   To:
  "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
   Date: Thursday, December 25, 2014, 9:08 AM
   
   I have
   been
  trying to figure out what grade of steel it is. I
   figured it was titanium, but when I watched
  the documentary,
   they kept saying it was
  steel. My bust guess is it is
   HY-100?Merry
  Christmas,Scott
   Waters
   
   Sent
   from my U.S. Cellular®
  Smartphone
   
   --------
  Original message --------
   From: via
  Personal_Submersibles  
   Date:12/25/2014 
  6:32 AM  (GMT-07:00) 
   To: personal_submersibles at psubs.org
  
   Subject: Re: [PSUBS-MAILIST] Deep Sea
  Challenger 
   
   
   Merry Christmas, Scott,
    
   The 43" sphere is steel 2.5"
   thick.  I don't think they have 
   released any information on what grade steel
  was used. 
   They said a 
  
  cylinder would have had to be three times as thick to
   withstand the pressure, 
   but
  I don't know if that was based on 43". 
   -Jim T.
   
  
   
   
   In a message dated
  12/25/2014 12:27:52 A.M. Central
   Standard
  Time, 
   personal_submersibles at psubs.org
  writes:
   
     What
  kind of metal is the personel sphere made of on
   James Camerons deep 
     sea challenger sub?
     Thanks,
     Scott Waters
     
   
     
     Sent from my
  
  U.S. Cellular® 
     Smartphone
     
   
  
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