In the absence of any widely-adopted, systematic means for representing and exchanging mechanical test data electronically, this CWA specifies data models and formats derived from the ISO 204:2018 creep testing standard, the ISO 12106:2017 creep-fatigue testing standard, the ASTM E 1457 – 15 creep crack growth testing standard and the ASTM E 2760 – 16 creep-fatigue crack growth testing standard.