Wes,
During the creation process I looked a the various materials, available from KFY starting with Yamataium, then Zesuaium, and lastly Durandium.
I ruled out Yamataium because of its cost, and its regenerative properties were far beyond the needs of the Y-SSS.
The reason for the selection of Zesuaium was for these specific properties the material possesses.
incapable of any flexibility or warping
The CRDM are large and possess panels on the top that have to be thin and 47 feet long. When deploying and closing, these panels are pushed up and a significant portion of the material is suspended with out support. The above stated property is needed for the CRDM's would fail.
doesn't conduct electricity and heat
The CRDM will be used in a wide range of environments, think Egyptian desert in the summer, or alaskan tundra. The panels of the CRDM would become extremely hot, and transfer that heat or lack there of into the interior of the modules. Without this property, the CRDM would have to have a much larger environmental system. It would also have to have some sort of thermal insulating factor, and that would cause problems with the lifting panels. With a Zesuaium construction, the system is primarily an air recycling system, and provides basic temp control because of the contents, heat given off by the equipment inside, and personnel.
cannot expand or contract due to thermal conditions
With the kinds of potential temps the CRDM could have to operate in, expansion and contraction would cause problems with the hatches, and could prevent the modules from being able to deploy or close.
If Durandium had these properties, I would have chosen it instead, but the truth is Durandium does not have the tensile requirements for the CRDM as indicated by the following statement from Durandium page.
"Factories press the sheets or melt or the blocks into the desired shapes"
Bottom line, no Zesuaium, then no CRDM.