<div dir="ltr"><div>See table below of two important steel strength parameters, ultimate tensile strength and tensile yield strength. At the very least, I would pick a steel that matches or exceeds the A516-70 spec. If you are trying the get the boat ABS classed., will be a pain in the butt and expensive to use a non-ABS approved material. If you are just trying to build a safe psub, pipe will work if the welding is done to code. Oil and gas industry uses a lot of API 5L X56 pipe so it is easy to get.</div><div><br></div><div>I hesitated to respond this this query as there is a lot evolved to specifying steel. Much more than can be covered in an email.</div><div><br></div><div>Cliff</div><div><br></div><div><br></div><div><font color="#000000" face="Times New Roman" size="3">
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</font><table width="630" style="width:474pt;border-collapse:collapse" border="0" cellspacing="0" cellpadding="0"><colgroup><col width="118" style="width:89pt"></colgroup><colgroup><col width="210" style="width:158pt"></colgroup><colgroup><col width="101" style="width:76pt"></colgroup><colgroup><col width="66" style="width:50pt"></colgroup><colgroup><col width="64" style="width:48pt"></colgroup><colgroup><col width="71" style="width:53pt"></colgroup><tbody><tr height="19" style="height:14.4pt"><td width="118" height="19" style="border:0px black;width:89pt;height:14.4pt;background-color:transparent"></td><td width="210" style="border:0px black;width:158pt;background-color:transparent"></td><td width="167" style="border:0.5pt solid windowtext;width:126pt;background-color:transparent" colspan="2"><font color="#000000" face="Calibri" size="3">Tensile Strength</font></td><td width="135" style="border-width:0.5pt 0.5pt 0.5pt 0px;border-style:solid solid solid none;border-color:windowtext windowtext windowtext black;width:101pt;background-color:transparent" colspan="2"><font color="#000000" face="Calibri" size="3">Min
Yield Strength</font></td></tr><tr height="19" style="height:14.4pt"><td height="19" style="border:0.5pt solid windowtext;height:14.4pt;background-color:transparent"><font color="#000000" face="Calibri" size="3">Description</font></td><td style="border-width:0.5pt 0px;border-style:solid none;border-color:windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">Common Use</font></td><td style="border-width:0px 0.5pt 0.5pt;border-style:none solid solid;border-color:black windowtext windowtext;background-color:transparent"><font color="#000000" face="Calibri" size="3">psi</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">Mpa</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">psi</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">Mpa</font></td></tr><tr height="19" style="height:14.4pt"><td height="19" style="border-width:0px 0.5pt 0.5pt;border-style:none solid solid;border-color:black windowtext windowtext;height:14.4pt;background-color:transparent"><font size="3"><font color="#000000"><font face="Calibri">ASTM(A)
516-70<span> </span></font></font></font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">Plate for Boilers and
Seperators</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">70,300</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">485</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">37,700</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">260</font></td></tr><tr height="19" style="height:14.4pt"><td height="19" style="border-width:0px 0.5pt 0.5pt;border-style:none solid solid;border-color:black windowtext windowtext;height:14.4pt;background-color:transparent"><font color="#000000" face="Calibri" size="3">A106 Gr C</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">Seamless Pipe</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">70,000</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">483</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">40000</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">276</font></td></tr><tr height="19" style="height:14.4pt"><td height="19" style="border-width:0px 0.5pt 0.5pt;border-style:none solid solid;border-color:black windowtext windowtext;height:14.4pt;background-color:transparent"><font color="#000000" face="Calibri" size="3">A333 Gr 6</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">Seamless Pipe</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">60,000</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">415</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">35,000</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">241</font></td></tr><tr height="19" style="height:14.4pt"><td height="19" style="border-width:0px 0.5pt 0.5pt;border-style:none solid solid;border-color:black windowtext windowtext;height:14.4pt;background-color:transparent"><font color="#000000" face="Calibri" size="3">API 5L X56</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">Seamless Pipe</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">71,100</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">490</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">56,600</font></td><td style="border-width:0px 0.5pt 0.5pt 0px;border-style:none solid solid none;border-color:black windowtext windowtext black;background-color:transparent"><font color="#000000" face="Calibri" size="3">390</font></td></tr></tbody></table></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Apr 22, 2018 at 2:35 PM, Jon Wallace via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="color:rgb(0,0,0);font-family:times new roman,new york,times,serif;font-size:16px;background-color:rgb(255,255,255)"><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9322"><span id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9590">You can change the parameters of the calculator to give you an accurate analysis of any steel. I show 1276 feet max depth for A333Gr3.</span></div><div class="m_-4623546378409772434qtdSeparateBR" id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9323"><br><br></div><div class="m_-4623546378409772434yahoo_quoted" id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9329" style="display:block"> <div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9328" style="font-family:times new roman,new york,times,serif;font-size:16px"> <div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9327" style="font-family:HelveticaNeue,Helvetica Neue,Helvetica,Arial,Lucida Grande,sans-serif;font-size:16px"> <div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9326" dir="ltr"> <font id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9325" face="Arial" size="2"> <hr size="1" id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9324"> <b><span style="font-weight:bold">From:</span></b> James Frankland via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.<wbr>org</a>><br> <b><span style="font-weight:bold">To:</span></b> Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.<wbr>org</a>> <br> <b><span style="font-weight:bold">Sent:</span></b> Friday, April 20, 2018 9:25 AM<br> <b><span style="font-weight:bold">Subject:</span></b> [PSUBS-MAILIST] Steel Grade Query<br> </font> </div> <div class="m_-4623546378409772434y_msg_container" id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9413"><br><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9414" dir="ltr">Hi All.<br></div><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9415" dir="ltr"><br></div><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9416" dir="ltr">I am purchasing battery pods for my new sub. I am attempting to get<br></div><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9488" dir="ltr">14"NB(355mm) x 98" (2500mm). Standard weight (9.52mm)<br></div><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9417" dir="ltr"><br></div><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9418" dir="ltr">Psubs calculator give ABS depth of 1160 feet (353m) for A516gr70<br></div><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9489" dir="ltr"><br></div><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9419" dir="ltr">However, I don't seem to be able to get a516 in that for standard pipe.<br></div><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9420" dir="ltr"><br></div><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9421" dir="ltr">I keep getting offered A106grB or A333Gr3 or Gr6.<br></div><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9549" dir="ltr"><br></div><div id="m_-4623546378409772434yui_3_16_0_ym19_1_1524424730555_9548" dir="ltr">106 seems to be high temp, 333 low temp.<br></div><div dir="ltr"><br></div><div dir="ltr">Does anyone know about these and if they will be ok for battery pods.<br></div><div dir="ltr"><br></div><div dir="ltr">Its a lot cheaper to get std wt pipe than it is to get a516 custom rolled......<br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr"><br></div><div dir="ltr">Many thanks<br></div><div dir="ltr">james<br></div><div dir="ltr">______________________________<wbr>_________________<br></div><div dir="ltr">Personal_Submersibles mailing list<br></div><div dir="ltr"><a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.<wbr>org</a><br></div><div dir="ltr"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/<wbr>listinfo.cgi/personal_<wbr>submersibles</a><br></div><br><br></div> </div> </div> </div></div></div><br>______________________________<wbr>_________________<br>
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