Hi there
Hope everybody is getting well.
Please, I am contacting for following doubt concerning thermal expansion coefficient.
I have searched a lot in the forum and google but I haven’t find any answer.
I hope also to post in the right forum
Following is the topic

Let’s consider two pipes of the same material – non ferrous - , having same length, same mass, same overall dimensions at temperature T0

- one cold worked (went under hardening), let’s call sample A
- the second one annealed, let’s call sample B

Let’s suppose the two samples undergo to the same increase of temperature, said DT =(T1-T0).

It is certain that both will extend.
My question is: at the end of this process, will the two samples (A and B) extend at the same length or will the final length of two samples be different ?
In other words, will the phisical state of the material influce the thermal expansion coefficient ?
Will then T1 have an influence on this ?
The second question, in any case linked to the previous is
Once the temperature will return to the initial one (T0), will the length of both pieces of material be the same as the initial one ?

Thanks in advance for your kind help