[PSUBS-MAILIST] Deep Sea Challenger

[Pete Niedermayr via Personal_Submersibles]

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
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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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