[en] Surface cracks in ASTM A516 Gr 70 were grown in fatigue under pure bending loads. Experiment results were compared to predictions made following, the guidelines of the ASME Boiler and Pressure Vessel Code, Section XI. An attempt was made to improve the predictions by including the effect of crack shape change (as observed in the experiments) and by varying the material parameters input to the analysis. It was found that good predictions could be made following the Section XI guidelines, although growth rates at a given stress intensity amplitude appeared to be somewhat lower than expected from results using compact tension specimens for the same material under similar conditions. (orig.)