Corrosion studies in molten fluoride and chloride salts were surveyed, and key data were aggregated into a single dataset. Studies were graphed by salt purity, temperature, sample material, container material, and experimental method (loop, capsule, crucible). To elucidate and quantify the factors that affect corrosion in molten salts, a data analysis using a newly-defined corrosion resistance score and a correlation analysis using techniques borrowed from machine learning were performed. It is shown that salt purity had the strongest correlation with corrosion rates in molten chlorides and fluorides. Data analysis across varied works was inconsistent due to the lack of standardization among molten salt corrosion studies. •Corrosion studies in fluoride and chloride salts from 1960 to 2016 are aggregated into a single dataset.•Corrosion testing techniques and reviewed.•Attributes of each study are processed and graphed to elucidate how they affect corrosion rates.•A data analysis is performed to show how important factors correlate with corrosion in molten salts.