Re: specification forMartensitic Stainless steel pipes that can be used at 820 degF

From: <Christopher>
Date: Tue May 24 2005 - 10:18:00 EDT

On May 24, 2005, at 6:19 AM, ranjitperu wrote:

> Can anyone tell me the specification for martensitic stainless stell
> pipes that can be used above 820 deg F safely.ASTM A 731 seems to be
> only suitable for much lower temperatures.
If you've checked your code books and haven't come up with any suitable spec, you're probably out of luck. Martensitic steel is usually subject to heat treatment, typically quenching and tempering, which is affected by sustained high temperatures. Don't try to use materials which aren't covered by whatever design code you're using. Christopher Wright P.E. |"They couldn't hit an elephant at <a href="/group/PipingDesign/post?postID=D9HH57NqGo4XP9WLSnPUAvLUMx5VJfezZsUyjRhjUn_FG26VRP0s63Fqoqd8bZk3rAx0j-NFExwSDL_7aQ">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 Tue May 24 10:18:00 2005