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If 316SS has a k of 0.0000090 @ 500 Deg. (see below) 4
- Thread starter Lovison
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I defy anyone to define ANY PROPERTY of ANY MATERIAL at -500 °F. Absolute zero is -459.67 °F. To get to -500 °F, you are below absolute zero, an may venture into a parallel universe / alternate time-space dimension, or something of the sort. Ask Stephen Hawking (Author of "A Brief History of Time"
for more details.
for more details.- Thread starter
- #3
Ok -500 Deg. F was a little beyond what can be attained.
So let's consider -300 Deg. F is there a k factor for cold?
Can you call it reduction value? Is there such a shrink
that could result because of extreme cold that one has to
consider. Space metal must have to handle these extremes
of contraction and expansion. Or is this considered creep
and not reduction? Wayne E. Lovison
service-parts@naglepumps.com
So let's consider -300 Deg. F is there a k factor for cold?
Can you call it reduction value? Is there such a shrink
that could result because of extreme cold that one has to
consider. Space metal must have to handle these extremes
of contraction and expansion. Or is this considered creep
and not reduction? Wayne E. Lovison
service-parts@naglepumps.com
The table I have in ASME B31.3 Chemical Plant and Refinery Piping shows a coefficient of thermal expansion for all austenetic stainless steels (300 series) of -8.21*10EE-6 /°F for -300 °F. This is the mean C.T.E. value for the temperature range between +70 and -300 °F. The chart ends at -325 °F. I believe it is referred to as coefficient of thermal expansion, even though for temperatures below 70 °F, it is actually a contraction.
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Lovison..
Refer to MIL-HDBK-5. Thermal values [K, C, alpha] are given for each metal as "curves" on a chart [graph].
The chart goes down to -400F for the 3XX SStl alloys; however the K value-curve stops at -200F. From "0"F-and-up it has a linear trend. From "0"F-and-down it definitely has a NON-LINEAR trend!
MIL-HDBK-5 (H) is available on the net... but it is a huge *.pdf file [~98Mb], so down-loading is a pain! Most tech libraries have a copy.
Regards, Wil Taylor
Refer to MIL-HDBK-5. Thermal values [K, C, alpha] are given for each metal as "curves" on a chart [graph].
The chart goes down to -400F for the 3XX SStl alloys; however the K value-curve stops at -200F. From "0"F-and-up it has a linear trend. From "0"F-and-down it definitely has a NON-LINEAR trend!
MIL-HDBK-5 (H) is available on the net... but it is a huge *.pdf file [~98Mb], so down-loading is a pain! Most tech libraries have a copy.
Regards, Wil Taylor
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When I listed the direct link for downloading MIL-HDBK-5 ( ) previously on this site, “mammone” followed up with the following useful tip:
"mammone (Visitor) Oct 29, 2001
Instead of downloading MIL-HDBK-5H as the full 40 MB file mentioned by Kenneth (a slow download if you only need to see a couple of pages), I downloaded any MIL-HDBK-5H section(s) I wanted, separately, at under "MIL-HDBK-5H." You just look in the table of contents for whichever metal you need and click. This might save you some time."
The direct link is:
"mammone (Visitor) Oct 29, 2001
Instead of downloading MIL-HDBK-5H as the full 40 MB file mentioned by Kenneth (a slow download if you only need to see a couple of pages), I downloaded any MIL-HDBK-5H section(s) I wanted, separately, at under "MIL-HDBK-5H." You just look in the table of contents for whichever metal you need and click. This might save you some time."
The direct link is:
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