this was very recently, although perhaps indirectly, addressed, although not
as a result of this inquiry by Bahaa. The temperature might not be
considered "cryogenic", but it is low enough that CS loses its toughness,
and should be used only if expertly considered. Stainless steel, copper and
aluminum all work well. Much is driven by materials availability,
contractor familiarity with installation and fabrication, and cost.
... Bruce D. Bullough ...
Sebesta Blomberg & Associates
2381 Rosegate
Roseville, MN 55113
651-634-7344 (office)
651-634-7400 (FAX)
www.sebesta.com
P.S. As an aside, I'm never quite sure what Kg/cm2 really is. I've heard of Kg force, but figured it must be a construct of some American or British who doesn't want to deal with metrication, or who wants to be able to argue that there is no benefit to metric units. Kg is a mass unit. Psi is known to be "pounds force" per square inch. I'm one American who prefers metric. Even the horrid unit of Pa/cm2 makes *some* sense. Now that I've vented, I'll say no more about units.
-----Original Message-----
From: Paul Bowers [mailto:pbowers@pipingdesign.com]
Sent: Thursday, October 04, 2001 9:11 AM
To: <a href="/group/PipingDesign/post?postID=mne2odGATlYsfBz0jHr6X0uE1fjCZIzr7bOdIjgO_kxyKZvUbeKYflwJ-YqrgXg9Bm4GzHrAnQzUbuC6O0BsU-PYrt0">PipingDesign@yahoogroups.com</a>
Subject: [PipingDesign] Low Temp Materials
From the webmaster inbox:
"dear..my name is Bahaa,i was asking if u could help me to find that:--
what is the relation between the temperature and
the pressure and the material of the pipe..
that if we got an application deals with very low
temperature (i.e. -70 c ) and a pressure of
60Kg/cm2..what is the best material with wall
thickness used .....?
and if you could notify me with a name of a book ,that
will be very generous from you.....
waiting for your answer......"
Received on Thu Oct 04 11:54:00 2001
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