RE: [PSUBS-MAILIST] Eurosub in the Americas

Paul, Frank,

It is possible to use thicker steel. We also consider using 12 mm instead of 10 mm for a eventual 400 meter version of the Eurosub.

Always be careful make your sub not to heavy. And there is some lead nessecary for trim and stability.

But we measured the ballast and that could be less.

Besides the 130 KG drop weight , the sub needs 420 Kg lead ballast. Using 12 mm steel add approx. 200 Kg.

So still something left for trim, stability and extra equipment.

All the best, Emile

> I am trying to evaluate the prospect of building the new Eurosub here in

> Canada.

I look forward to seeing a Eurosub being built in Canada. It's a great design and now a "proven " design.
For the steel, I agree with Hugh, it's common here to use the AS516-Gr70 steel.
I would suggest using thicker steel for the hull if a metric equivalent is not available. I used 3/8 inch but now have to add a LOT of lead ballast. It would have been a minor increase in cost to use 1/2 inch, and the work involved is basically the same. With the added cost of extra lead bricks, the final cost would have been the same, but I would have a stronger hull.
In the final tally of the cost to build a sub, the hull steel is a relatively small portion of the total.
Good luck and I hope your investigations lead to building a Eurosub. It's a beautiful boat.
Frank D.

-----Original Message-----
From: MerlinSub@t-online.de
To: personal_submersibles@psubs.org
Sent: Sat, Jan 9, 2010 1:52 am
Subject: RE: [PSUBS-MAILIST] Eurosub in the Americas

http://materials-welding.blogspot.com/2009/06/mw2498-re-equalant-api-material.html

1.0570

exits in this table two times :

http://www.zyxtek.se/steel_eng.htm

vbr Carsten

"Hugh Fulton" <hc.fulton@gmail.com> schrieb:

> Hi Paul,

> Equivalent is A516 Gr 70

> Grades and equivalents table:

> ASME

> ASTM

> DIN17155

> EN10028

> BS1501

> Name

> Number

> SA 516 60

> A 516 60

> HII

> P265GH

> 1.0425

> 161 430A

> SA 516 65

> A 516 65

> 17Mn4

> P295GH

> 1.0481

> SA 516 70

> A 516 70

> P355GH

> 224-490 A & B

> Any sub made from 516 Gr70 will be OK

> Regards,   Hugh

> From: owner-personal_submersibles@psubs.org

> [mailto:owner-personal_submersibles@psubs.org] On Behalf Of Emile van Essen

> Sent: Saturday, 9 January 2010 12:09 p.m.

> To: personal_submersibles@psubs.org

> Subject: RE: [PSUBS-MAILIST] Eurosub in the Americas

> Hi Paul,

> There will probably be  tables to compare the steel.

> The 355 stands for the yield strength in N/mm2  (Ultimate tensile strength

> 520 N/mm)  It is very common steel ; exotic material will make the sub more

> expensive and probably more difficult to weld.

> Lower or higher yield strength decrease or increase the dive depth.

> Pipes are even here in Inch sizes! The other problem is that you need just

> very short pieces and you have to buy lengths. Go with rolled plate!.

> Regards, Emile

>   _____

> Van: owner-personal_submersibles@psubs.org

> [mailto:owner-personal_submersibles@psubs.org] Namens lassen@rosebud.ca

> Verzonden: vrijdag 8 januari 2010 23:02

> Aan: personal_submersibles@psubs.org

> Onderwerp: [PSUBS-MAILIST] Eurosub in the Americas

> Hello All,

> I am trying to evaluate the prospect of building the new Eurosub here in

> Canada. Does anyone know if an ASME or ASTM equivalent exists for the steel

> that this sub is made of? It is S355J2, a German standard if I'm not

> mistaken. How might I account for any differences in thickness, overall pipe

> / end cap diameter and steel engineering properties if I hope to build this

> sub which uses metric pipe sizes and a steel standard that I don't believe

> is available here either.

> Cheers,

> Paul

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