<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div><span></span></div><div></div><div id="yui_3_16_0_1_1430342083286_2920" dir="ltr">Super Duplex stainless steel is used widely in the off shore oil and gas industry for corrosion in production tubulars particularly for high H2S levels. It has high chromium and molybdenum content. Excellent resistance to inorganic acids especially those containing chlorides. I don't know of any submersible pressure hulls made of Super Duplex stainless steel. It would be expensive.</div><div id="yui_3_16_0_1_1430342083286_3049" dir="ltr"><br></div><div id="yui_3_16_0_1_1430342083286_3020" dir="ltr">Cliff</div><br> <div id="yui_3_16_0_1_1430342083286_3038" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"> <div id="yui_3_16_0_1_1430342083286_3037" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_1_1430342083286_3036" dir="ltr"> <hr size="1" id="yui_3_16_0_1_1430342083286_3039"> <font id="yui_3_16_0_1_1430342083286_3035" face="Arial" size="2"> <b><span style="font-weight: bold;">From:</span></b> via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> psubs <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, April 29, 2015 3:14 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> [PSUBS-MAILIST] Duplex Stainless<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1430342083286_3050"><br><div id="yiv7829542795"><div id="yui_3_16_0_1_1430342083286_3053"><span id="yui_3_16_0_1_1430342083286_3052" style="color: rgb(0, 0, 0); font-family: Verdana; font-size: 10pt;"><div id="yui_3_16_0_1_1430342083286_3051">Does anyone know anything about duplex stainless steel? Has anyone ever made a deep diving submarine out of it?</div>
<div id="yui_3_16_0_1_1430342083286_3054"> </div>
<div id="yui_3_16_0_1_1430342083286_3055">Thanks,</div>
<div id="yui_3_16_0_1_1430342083286_3063">Scott Waters</div></span></div></div><br>_______________________________________________<br>Personal_Submersibles mailing list<br><a id="yui_3_16_0_1_1430342083286_3064" href="mailto:Personal_Submersibles@psubs.org" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br><a id="yui_3_16_0_1_1430342083286_3065" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br><br><br></div> </div> </div> </div></body></html>