[PSUBS-MAILIST] Hull Calc: 78" spheres

[hank pronk via Personal_Submersibles]

All I know at this point is it is a pressure vessel, an explosion test chamber.  I assume it is a higher grade.
Hank--------------------------------------------
On Fri, 1/9/15, Sean T. Stevenson via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] Hull Calc:  78" spheres
 To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
 Received: Friday, January 9, 2015, 10:24 PM
 
 On 2015-01-09 20:16, hank
 pronk via Personal_Submersibles wrote:
 >
 just to make things interesting.  I found two aluminum 60
 in spheres 3 in thick wall and maybe 6 in thick flange. 
 They appear to be cast and perfectly round.
 >
 Hank--------------------------------------------
 >
 Any idea as to alloy?
 Looking for:
 
 ASTM B 209
 Alloy 6061-T6
 ASTM B 928 Alloy 5083
 ASTM B 928 Alloy 5086
 ASTM B
 209 Alloy 5383
 ASTM B 209 Alloy 5456
 
 Sean
 
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