[en] Data files have been produced on international strain-controlled fatigue information available for 2 1/4 %CrMo steels. The available data have been considered generally in terms of total strain range vs. cycles to failure (Nsub(f)), tensile stress at Nsub(f)/2 vs. cycles to failure and time to failure vs. cycles to failure. Where possible the continuous cycling data been statistically analysed in terms of the elastic and plastic strain components and cycles to failure to yield best-fit equations over defined temperature (T) regime viz: T <= 427⁰C, 427⁰C < T <= 550⁰C and 550⁰C < T <= 600⁰C. Increasing test temperatures result in a progressive decrease in continuous cycling fatigue endurance and sustainable stress range