From: "Sprague, Harold O." <SpragueHO(--nospam--at)bv.com>
Date: Tue, 25 Apr 2000 10:37:39 -0500
A513 is an electric resistance welded mechanical tube, and is manufactured
from a wide variety of steel material grades that may either be a carbon
steel or an alloy steel.
I do not know what the T5 indicates. Carbon contents vary from 0.08 to
0.66. Weldability and ductility may be a big issue. Have them submit the
heats. The welding may have to be qualified, and should be tested. I would
not use it if it is part of a frame requiring ductility.
> -----Original Message-----
> From: Nicholas Blackburn [SMTP:nblackburn(--nospam--at)IPD-Oak.com]
> Sent: Monday, April 24, 2000 2:35 PM
> To: 'seaint(--nospam--at)seaint.org'
> Subject: ASTM A513 Tubing
> Importance: High
> A contractor is requesting a substitution of ASTM A513 for ASTM A500-GrB
> structural steel tubing. Does anyone have any information on the use of
> A513 for structural purposes and whether there are any welding and
> ductility issues to look out for. The mill cert. states that fy=86.5ksi
> and fu=97.3ksi and lists the steel as A513-97 T5. The tube in question
> is 7" diameter 1/2" sidewall with a proposed full pen. weld splice at
> 2/3H. The design is driven by deflection criteria not stresses.
> Nicholas Blackburn, PE