Why 2024?

On Fri, 15 Jun 2007 11:43:05 -0700, wrote:

On Jun 15, 7:15 am, GeorgeB wrote:
On Wed, 13 Jun 2007 19:30:04 GMT, Orval Fairbairn
..

If you want to use incorrect terminology, that is fine. Stiffness has
nothing to do with plastic deformation. If you take the same size
piece of 5052, 6061, 2024, or 7075 and load them the same BEFORE
plastic deformation, you will see virtually no (less than 10%)
difference in deflection vs load.

10% in my world is hardly "virtually no"



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Posted via a free Usenet account from http://www.teranews.com

10% in my world is hardly "virtually no"

Ah, and where does "less than 10%" fall?

On Jun 15, 3:18 pm, Bob Kuykendall wrote:
10% in my world is hardly "virtually no"

Ah, and where does "less than 10%" fall?

For those with the time and interest, MIL-HDBK-5H has just about
everything you might want to know about use of aluminum in aircraft
structures (see chapter 3). Other metals are covered too. It's
freely available on the web courtesy of our tax dollars.

"MILITARY HANDBOOK, METALLIC MATERIALS AND ELEMENTS FOR AEROSPACE
VEHICLE STRUCTURES"

http://snap.lbl.gov/pub/nj_bscw.cgi/...h%20Metals.pdf


Enjoy,
Craig

On Jun 15, 9:07 pm, clare at snyder.on.ca wrote:
On Fri, 15 Jun 2007 11:43:05 -0700, wrote:
On Jun 15, 7:15 am, GeorgeB wrote:
On Wed, 13 Jun 2007 19:30:04 GMT, Orval Fairbairn
.

If you want to use incorrect terminology, that is fine. Stiffness has
nothing to do with plastic deformation. If you take the same size
piece of 5052, 6061, 2024, or 7075 and load them the same BEFORE
plastic deformation, you will see virtually no (less than 10%)
difference in deflection vs load.

10% in my world is hardly "virtually no"



Regardless, the reason 2024 than 6061 for
shop bent brackets is because it is stronger,
not because it is stiffer.

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FF