Dataset of oxidation properties of refractory alloys.

This data article presents a curated dataset of high-temperature oxidation experiments on refractory alloys and refractory high-entropy alloys (RHEAs). The data were compiled from 62 peer-reviewed publications spanning 1956-2023 and supplemented with initial in-house experimental data generated by the authors' laboratory. For each experiment, alloy composition (at.%), oxidation temperature (°C), exposure time (h), specific mass change in air (mg/cm²), and the data source are reported in a harmonised format. The dataset is openly accessible through an online repository. It is intended to support data-driven analysis, benchmarking, and machine-learning-assisted design of refractory alloys with improved high-temperature oxidation resistance.