Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Young's vs. temperature
- Thread starter baxterl
- Start date
- Thread starter
- #4
The two data points mentioned above will work. They are from an actual graph of Young's Modulus in tension for Austenitic stainless steels. At 0 deg C,this is 32 deg F and at 60 deg C, this is 140 deg F. You can interpolate your specific values between these temperatures (there is little to no change in Modulus between 32 and 70 deg F).
- Thread starter
- #7
Hmmmm.
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
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
EdStainless
Materials
I also have a bunch of good data for E vs temp.
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
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
- Thread starter
- #10
I guess.
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
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
EdStainless
Materials
The Code info is way too rough for this application. There is very good data on spring wire, but the modulus is different for wire than for other product forms so you may not want to use it.
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
= = = = = = = = = = = = = = = = = = = =
Rust never sleeps
Neither should your protection
- Status
Similar threads
- Locked
- Question
- Locked
- Question