Composite LTM 12 vs Invar (Fe-Ni36)

Hello all,

I tried to search through internet and website the comparison between these two material, but could not find. Does anyone here know the thermal expansion (CTE) for these two different material? I would like to fabricate a tool using a combination of these two tools. :slight_smile:

http://www.optics.arizona.edu/optomech/student%20reports/tutorials/GibbPresentation.pdf

http://www.advanced-composites.co.uk/data_catalogue/catalogue%20files/pds/PDS1005_LTM10,12,16_Issue10a.pdf