[PSUBS-MAILIST] K-250

Sat Jun 14 00:54:01 EDT 2014

Carsten and Emile are using some steel out of Europe that is better than 516 / 70  I believe is is getting up close to HY80.  Try asking them.

Shipping might be a bit more costly.  However They are pretty good at finding the right deals and could even get the shell done for you over there. 

Hugh

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of Sean T. Stevenson via Personal_Submersibles
Sent: Saturday, 14 June 2014 4:37 p.m.
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] K-250

The EE machines are probably wasted on a 250 hull.  They have one of the most capable facilities around, and refinery parts are likely much more lucrative than hobby subs.  I wonder if timing is an issue? You might luck out resubmitting when they happen to have a slow period (wait for the price of oil to drop), but then the transport costs probably make the case for getting anything made closer to you if possible.  I can't imagine that shipping something like that is cheap.

Sean

On June 13, 2014 10:47:42 AM MDT, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Scott,

Weird, they must know your general location by your e mail?   they are expensive and prefer huge jobs, but still

Hank

On Friday, June 13, 2014 12:04:46 PM, Daniel Lance via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

I wouldn't consider using anything less then  516 gr 70 when building a pressure hull . Also make sure you ask for the paper work to go with it with the proper heat numbers stamped on all the hull sections. I would also follow up by sending a coupon from each piece to an independent lab for verification .
Dan Lance

On Jun 13, 2014 9:15 AM, "Daniel Lance" <lanceind at gmail.com> wrote:

36 " in diameter . The original K250 plans specified A36 . In the 1960s or 1970s that was acceptable when steel was domestically produced. Most A36 is imported today and of questionable quality . 

On Jun 13, 2014 8:37 AM, "swaters via Personal_Submersibles" <personal_submersibles at psubs.org> wrote:

The K-250 hull is 4 foot long and 30" OD out of 1/4" ASME 516 gr70 correct?

Thanks,

Scott Waters

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