material properties depend on temperature

Hi everybody,

I'm working on a structural simulation using code_aster. I have a table of temperatures which has been calculated in a thermal simulation and after the temperatures have been projected on the structural mesh.

In the structural model, I want the mechanical properties of material depend on temperature. I've been looking for information about the way but I haven't found anything,.....may be, it is very easy but I'm not finding it.

I would like to put, for example:
TEMP ELAS
20K 2467 MPa
40K 2009 MPa
60K 1643 MPa

Now, my mechanical properties aren't depending on the temperatures, these are always constant.

Can anybody help me? any idea?

Thanks
Cartuns