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Flydog1966(at)aol.com
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 Posted: Tue Nov 20, 2007 4:17 pm Post subject: 4130N-or-not-N |
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So why is it getting hard to find 4130 N ?
I just received my order for some 4130 N (thin sheet, from ACS.) and one of the sheets is AMS 6350 j.
After a little research I find that this is in the annealed condition. A call to ACS and I find that they will occasionally substitute this for the normalized stock.
Zenith has changed there 701 dwgs ,dropping the "N" from the material description,compared to the older dwgs.
So is it OK to use annealed ?
Phil Day
scrapbuilder
701
do not archive
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larry(at)macsmachine.com
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| Posted: Tue Nov 20, 2007 5:55 pm Post subject: 4130N-or-not-N |
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Phil,
Normalizing is done to get the best condition for machining.
Annealing is done to get the ductility and condition for stamping or
bending.
The usual normalized 4130 is the preferred condition for use in aircraft
construction and
may be the best for welding to avoid overheating the material.
I'd be inclined to want to know what were the differences in yield
strength for these metals from Aircraft Spruce.
Normalizing is one condition and Annealing is multiple possible conditions.
Larry McFarland 601HDS at www.macsmachine.com
Flydog1966(at)aol.com wrote:
| Quote: | So why is it getting hard to find 4130 N ?
I just received my order for some 4130 N (thin sheet, from ACS.) and
one of the sheets is AMS 6350 j.
After a little research I find that this is in the annealed condition.
A call to ACS and I find that they will occasionally substitute this
for the normalized stock.
Zenith has changed there 701 dwgs ,dropping the "N" from the
material description,compared to the older dwgs.
So is it OK to use annealed ?
Phil Day
scrapbuilder
701
do not archive
*
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