[PSUBS-MAILIST] Best Steel to use for Sub Hull
cast55 at telus.net
cast55 at telus.net
Wed Oct 23 10:01:24 EDT 2013
What were the specific challenges that you had to overcome to properly weld HY-80?
Sean
Phil Nuytten <phil at philnuytten.com> wrote:
>Hi, Hugh
>As Vance says, HY80 is somewhat challenging to weld – err, actually,
>that’s an understatement. We had to work with our fabricators to come
>up with a whole weld procedure to satisfy our classing agency. If you
>decide to go this route, let me know and we will share that procedure.
>Phil
>
>From: vbra676539 at aol.com
>Sent: Tuesday, October 22, 2013 7:18 PM
>To: personal_submersibles at psubs.org
>Subject: Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>
>I think it is somewhat demanding to weld, and expensive by comparison,
>of course. That said, there is a mountain of data available, as the
>pressure hulls of most modern US Navy submarines are built out of it.
>Vance
>-----Original Message-----
>From: Hugh Fulton <hc.fulton at gmail.com>
>To: 'Personal Submersibles General Discussion'
><personal_submersibles at psubs.org>
>Sent: Tue, Oct 22, 2013 10:15 pm
>Subject: Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>
>
>Vance, Yep that sounds about right.
>Are there any nasties to using it?
>Chs Hugh
>
>
>
>From: Personal_Submersibles
>[mailto:personal_submersibles-bounces at psubs.org?] On Behalf Of Vance
>Bradley
>Sent: Wednesday, 23 October 2013 1:37 p.m.
>To: Personal Submersibles General Discussion
>Subject: Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>
>Hugh,
>HY-80 used to maintain the standard dimensions of a DW2000 with 50%
>depth increase.
>Vance
>
>Sent from my iPhone
>
>On Oct 22, 2013, at 8:13 PM, "Hugh Fulton" <hc.fulton at gmail.com> wrote:
>Vance, I am sure I saw recently from Phil that he was using HY 80 but
>I don’t know what on. I did a calc on mine and I got a lot deeper
>using the HY 80 specs over the Grade 70.
> Hugh
>
>From: Personal_Submersibles
>[mailto:personal_submersibles-bounces at psubs.org] On Behalf Of
>vbra676539 at aol.com
> Sent: Wednesday, 23 October 2013 11:55 a.m.
> To: personal_submersibles at psubs.org
> Subject: Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>
>One other thing comes to mind on this. Phil uses A516Gr70 in the
>DW2000s. It occurs to me that if there was a demonstrable benefit to
>A537, he would have used taken advantage of it. And he didn't,
>apparently. Interesting. Don't know why, though. Maybe it has something
>to do with welding stainless inserts in and the heat treatment thereof.
>Just a guess.
> Vance
> -----Original Message-----
> From: JimToddPsub <JimToddPsub at aol.com>
> To: personal_submersibles <personal_submersibles at psubs.org>
> Sent: Tue, Oct 22, 2013 6:42 pm
> Subject: Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
> Vance,
> From Leeco Steel's website:
>
>A537 plate steel is heat-treated. As a result, it displays greater
>yield and tensile strength than the more standard A516 grades. A537
>steel plate is ideal for both in boilers and pressure vessels, and is
>used in the oil, gas and petrochemical industry.
>
>Nice to see it provides at least a brief comparison to A516. I'm sure
>there are more variables to consider including cost.
>
> Jim
>
>In a message dated 10/22/2013 5:23:43 P.M. Central Daylight Time,
>vbra676539 at aol.com writes:
> Jim,
>A537 was used extensively, as well, especially in the early boats that
>Perry built. Maybe you can figure it out. It seems that I recall being
>told that it was somewhat harder to weld but had better
>cold-water-under-pressure properties. Maybe Dr. Nuytten would weigh in
>on this, assuming he isn't up to his ass in DW3000 alligators this week
>(which I suspect he is).
> Vance
> -----Original Message-----
> From: JimToddPsub <JimToddPsub at aol.com>
> To: personal_submersibles <personal_submersibles at psubs.org>
> Sent: Tue, Oct 22, 2013 4:18 pm
> Subject: Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
> Greg,
>I should have clarified that. It was a cut-and-paste from a web site.
>I'm more of a librarian in that I save info in an organized fashion
>when I come across it so I'll have it available later when the need
>arises. That was the case in this instance.
> Jim
>
>In a message dated 10/22/2013 1:25:34 P.M. Central Daylight Time,
>jgcottrell2002 at yahoo.com writes:
>Thanks for the info, Jim. It's good to know there is some one in the
>group that is also in the steel industry.
>
> Greg
>
> From: "JimToddPsub at aol.com" <JimToddPsub at aol.com>
> To: personal_submersibles at psubs.org
> Sent: Tuesday, October 22, 2013 12:59 PM
> Subject: Re: [PSUBS-MAILIST] Best Steel to use for Sub Hull
>
> Maybe more detail than you really want to know, but here goes:
>
>ASTM A 516 or ASME SA 516 grade is one of the most popular steel grades
>in market .
>
>It is primarily intended for use in welded pressure vessels where notch
>toughness is important. It comes in four grades 55, 60, 65 & 70. At
>Oakley Steel we mainly sell 516 gr 60 and 516 gr 70. These grades cover
>a range of tensile strengths from 55 - 90 MPa and this versatility
>explains much of the specifications popularity.
>
>For plates thinner than 40mm we normally supply them as rolled. Plates
>supplied above 40mm thick are normalised.
>
>For A 516 grade 70, which is one of our most popular steels, the ASME
>standard composition is as follows (dependent on grade):
>
> Carbon 0.27 - 0.31%
> Manganese 0.79 - 1.3%
> Phosphorous 0.035% max
> Sulphur 0.035% max
> Silicon 0.13 - 0.45%
>
>In a message dated 10/22/2013 11:53:12 A.M. Central Daylight Time,
>jonw at psubs.org writes:
>
> Generally, A516gr70 suffices for personal or recreational submarines.
>
> Jon
>
>
> On 10/22/2013 12:45 PM, Christopher Cave wrote:
> Hello,
>
>What is the best steel to use for a submarine hull. Someone mentioned
>marine steel such as 316,316L or 317. Any suggestions or a website I
>can review.
>
> Thanks,
> Chris
>
> Christopher Cave
>
> christophercave at yahoo.com
>
>
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Sent from Kaiten Mail. Please excuse my brevity.
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