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RE: ASTM A513 Tube Specs.

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A513 is mechanical tubing, hot rolled electric weld seam.  It is a low carbon steel typically in the Fy 65 to 72 range and Fu 87.  It is weldable, the welder just has to be qualified.
We typically treat it as FY 50 for a little extra factor on the material variability.  There are many sizes available in the smaller sizes as an alternate to standard pipe.
Paul Feather PE, SE

From: Mark Johnson [mailto:markajohn(--nospam--at)]
Sent: Wednesday, August 06, 2008 2:37 PM
To: seaint(--nospam--at)
Subject: ASTM A513 Tube Specs.

Hello Folks,

One of my people wants to use A513 round tube for guardrails etc.  Anyone know the Fy, Fu, weldability, etc.  I didn't find it in the AISC manual or online quickly.

Mark Johnson