frequently using material data

Yes, move it into an include, when exporting you will get 2 files link together, just change load in 1st file and keep constant data in the included file

many thanks for your quick  reply and very useful trick..

I was not clearly explained my question.

I want to re use the same material in all my analysis with different designs ...so i wantsave time in creating material all times and checking all values given are corect from the source .

Simply to say ..in few other CAE softwares we can export material  to a .dat file and can be imported in to other files during PRE PROCESSING . do we have any option in HM..

Yes, HM can.

Pls use export tab (File>export) to export mats to a file, and import it to reuse

So in the export option all need to be deactivated , except a material .and imported ?

You choose custom

Or simply delete other entities than materials before exporting

Thanks ..