[PSUBS-MAILIST] HY-80 steel

Sat Jun 14 13:41:06 EDT 2014

There is also the issue of minimum allowable radius for a given thickness.
Vance

Sent from my iPhone

> On Jun 14, 2014, at 9:23 AM, "Sean T. Stevenson via Personal_Submersibles" <personal_submersibles at psubs.org> wrote:
> 
> EE can actually do heads up to 8 inches thick, but on small sub hulls you run into the problem of thinning, requiring a lot of extraneous material to maintain minimum thickness all over, and this extra weight affects the payload capacity. The only ways around this are pressing and welding segments, as Phil does with the DW hulls, or turning the whole piece down to true thickness.
> 
> Sean
> 
> 
>> On June 14, 2014 4:19:41 AM MDT, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> Scott,
>> Understood, building from the old K 250 may be easier.  As for your deep sub, Edmonton exchanger can produce very thick sphere's  from 516-70.  I asked them how thick one time.  They replied 5 inches thick, I almost peed my pants,lol.    You could get someone from out west that talks engineer talk to request a quote.
>> Didn't Sean calculate that you will need 2.25 in thick or something like that.  That would be no problem for EE, and they will weld it up for you, including the CT base.
>> Hank
>> 
>> 
>> On Friday, June 13, 2014 11:56:33 PM, via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> 
>> 
>> Scott, try these:
>> http://www.diversifiedmetals.com/stocked-alloys/high-strength-alloys/high-strength-alloys-80
>> http://www.suppliersonline.com/propertypages/hy80.asp
>> http://www.aasteel.com/hy-80-100.html
>> http://www.cliftonsteel.com/tensalloy-extra-hy-80.html
>> You might have trouble getting them to talk with you in the quantity you would want.  Not many guys are looking for little bit of a titanium alloy.
>> Jim
>>  
>>  
>> In a message dated 6/13/2014 10:05:25 P.M. Central Daylight Time, personal_submersibles at psubs.org writes:
>> The K-250 is for my wife to build. She wanted something that wasn't really hard to build. I am wanting to build a sub that dives to 3,300' and holds 3 people with an large veiwport and manipulator. Problem I am currently having is locating HY-80 steel.
>> Thanks,
>> Scott Waters
>> 
>> 
>> 
>> 
>> Sent from my U.S. Cellular© Smartphone
>> 
>> hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>> Scott,
>> Just a thought, instead of buying an old k250 and salvaging some parts.  Consider talking to Steve, and buy his Perry 1401 front end and have a hull rolled to fit, 43in, you could put a real nice sub together working around the Perry front end.
>> Hank
>> 
>> 
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