Thermal expansionCarbon steel vs stainless steel

[pardal]

At the Shigley- Mischke MECHANICAL ENGINEERING DESIGN
a table states that the thermal expansion for carbon steel

is 10.8 E-6 in °C and 6.0E-6 in farenheit from 0 to 100 C

And for Stainless steel this values are

17.3 E-6 °C or 9.6 °F

Does any one know what kind of SS is .

I{m looking for a ferrous alloy to have aboutt more than 50 % Threma expansion coefiecent that the carbon steel at 650 °C
If possible a comercial trade alloy.

Thanks in advance.








You can reach me at k281969@hotmail.com
but keep your post here for mutual benefits.
Pardal

 

[mcguire]

type 304 stainless will give you just what you want. stay away from ferritic stainless which have similar coefficients to corbon steel.
data sheets on 304 are available at stainlesscenter.com

 

[pardal]

mcguire:

Thanks for it.
I will see this site.


You can reach me at k281969@hotmail.com
but keep your post here for mutual benefits.
Pardal

 

[pardal]

My task to do, is to generate a compression force between two plates when they rise it's temperature from ambient to 480°C
This 300 mm diameter round Sae 1010 plates 38 mm thick, will hold a stack of about 100 each Sae 1070 1mm thick to be flattened .
This, can be called sandwich, will be hold by a 40 mm round SAE 4140 threaded bar heat treated as a 12.9 grade bolt.
To build up a increasing compression , I intent to put a spacer over one plate and under the nut that will tighten all the array , this spacer shall be of a material with a different thermal expansion from the others components.
I thought on a aisi 304 hollow bar as it have a thermal exp coefficient about 17E-6 micro mm/meter/°c
and the carbon and alloy steel had about 10e-6 .
My concern is about the behavior of all this array at the 480 C temperature, it will be about 4 hour since this temp is reached.
The task to cope, is to avoid a loss on the compression, so all the 1070 plates are gathered side by side , so they will last flattened when this force is released, of course that it will happen after the eat treatement.
Any comment will be granted.
You can reach me at k281969@hotmail.com
but keep your post here for mutual benefits.
Pardal