Cryogenic Materials Data Base for the W7-X magnet system

A Cryogenic Materials Data Base (MDB) was established for the systematic documentation of all materials property data measured in the frame of the W7-X construction and assembly of the magnet system. The contents of the MDB in terms of materials and property data is presented as well as the structure of its organisation. Summary information is given on the thermal expansion and the mechanical properties of structural materials and isotropic and anisotropic reinforced epoxy resins. Two particular open issues are addressed which were found in the course of the data review, and are suggested for further study. Helpful recommendations for similar activities in future projects are given.