Data related to measured dispersoid compositions and calculated dispersoid volume fractions: Dispersoid Composition in Zirconium Containing Al-Zn-Mg-Cu (AA7010) Aluminium Alloy A.M. Cassell, J. D. Robson, C. P. Race, A. Eggeman, T. Hashimoto, M. Besel. Submitted to Acta Materialia. Datafile of compositions to reproduce Fig.8 in paper (.mat Matlab format) Datafile of predicted dispersoid volume fractions on which calculations were performed to produce Fig. 10 in paper (comment in datafile provides further details)

Otto Fuchs KG are thanked for provision of the materials used in this study and financial support. The EPSRC are thanked for financial support through the associated programme grant LightFORM (EP/R001715/1). CPR was funded by a University Research Fellowship of the Royal Society. Density functional theory calculations were performed on the Computational Shared Facility of the University of Manchester. The DFT data presented in the paper are available on Zenodo (zenodo.org) doi:10.5281/zenodo.2579165