RE: TIG welding of Large dia SS Pipe

From: <Christopher>
Date: Thu Jun 28 2001 - 10:43:00 EDT

>For cryogenic application, generally u will require a CVN certified material
>both for base and welding. Using the table in B31.3 for impact test
>requirement, is it permissible to use a non-CVN certifed piping/component
>listed as 304L stainless steel material?
Section VIII exempts austenitic material from Charpy testing except for use below maybe 300F (check this), because austenitic material doesn't have the brittle transition behavior found in carbon and low alloy steel. I'm sure the piping codes have similar provisions.

Christopher Wright P.E. |"They couldn't hit an elephant from <a href="/group/PipingDesign/post?postID=Ka7T8dBaLbgsmytBDSvDt2BGU1mz2FfXhUO6kjI_u3yZwERgVWMhFBtLA9E6_u-F58qfhgAQl3D6">chrisw@skypoint.com</a> | this distance" (last words of Gen.

___________________________| John Sedgwick, Spotsylvania 1864)

<a href="http://www.skypoint.com/~chrisw">http://www.skypoint.com/~chrisw</a> Received on Thu Jun 28 10:43:00 2001