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RE: Steel and Elevated Temperatures

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Yes.  The following is only for ASTM A-36.

MSS, SP-58 is for pipe hangers does not require a reduction in stresses until you get above 650 degrees F. According to ASME, the modulus of elasticity starts to drop off at 400 degrees F, but the Fu does not start dropping until the temperature is above 650 degrees F. There is a good discussion in ASME STS-1 for stacks.

Harold Sprague

From: Eknrinc(--nospam--at)
Reply-To: <seaint(--nospam--at)>
To: seaint(--nospam--at)
Subject: Steel and Elevated Temperatures
Date: Fri, 4 Mar 2005 13:06:41 EST

Trying to determine the impact of elevated temperatures say 150F on a steel
beam. Any technical guidelines out there besides AISC 9th  Ed. TIA.

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