Young's vs. temperature
Young's vs. temperature
(OP)
Hi again,
Anybody got any info on the temperature variation of Young's modulus in stainless?
...L
Anybody got any info on the temperature variation of Young's modulus in stainless?
...L





RE: Young's vs. temperature
At about 70 deg F 28.8 X 10 6psi
140 deg F 28.2 X 10 6psi
RE: Young's vs. temperature
Do you need the value for shear or tension?
RE: Young's vs. temperature
We need to compensate 0 to 60degC, so however many temperatures gives us a nice curve fit.
Tension alone will work...
...L
RE: Young's vs. temperature
RE: Young's vs. temperature
316 SS
27C 28.0 x 10^6
93C 28.1 x 10^6
149C 27.5 x 10^6
304 SS
27C 28.0 x 10^6
93C 27.9 x 10^6
149C 27.1 x 10^6
RE: Young's vs. temperature
From your data, I get (1-28.0/27.5)*1/122degC, or 148ppm/degC.
From metengr I get (1-28.8/28.2)*1/70degF, or 304ppm/degF, 170ppm/degC.
From a graph in "Elevated Temperature Modulus Measurements using the Impulse Excitation Technique (IET)", I get 315 ppm/degC.
Throw out the outlier and average to 159ppm/degC?
...L
RE: Young's vs. temperature
RE: Young's vs. temperature
The problem that I have is that differences in published E values are huge (+/-10%).
If you really need to know, then you need to make some measurements yourself. Most published data is looking at large ranges.
The way that your parts are made and the exact composition will have an impact down at this level.
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: Young's vs. temperature
www.
shows 434ppm/degC, so the data is not 10% but 300%. Strange, as Young's is one of the more stable, process-resistant, alloy-resistant properties of metal...
...L
RE: Young's vs. temperature
RE: Young's vs. temperature
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
http://www.trent-tube.com/contact/Tech_Assist.cfm