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RE: ASTM A513 Tubing

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Nicholas,

The T5 probably indicates a Type 5 which means that it is mandrel drawn to
obtain closer dimensional tolerance.

Regards,
Harold Sprague


> -----Original Message-----
> From:	Sprague, Harold O. 
> Sent:	Tuesday, April 25, 2000 10:40 AM
> To:	'seaint(--nospam--at)seaint.org'
> Subject:	RE: ASTM A513 Tubing
> 
> Nicholas,
> 
> 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.
> 
> Regards,
> Harold Sprague
> 
> 
> 	-----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.
> 
> 	Thanks
> 
> 	Nicholas Blackburn, PE
> 	nblackburn(--nospam--at)ipd-oak.com
> 
>