  The diffusion of tungsten in {\alpha}-iron is important for the application
of ferritic-iron alloys to thermal power plants. These data, over a wide
temperature range across the Curie temperature, have been recently reported. We
show that these diffusion coefficients can be satisfactory reproduced in terms
of the bulk elastic and expansivity data by means of a thermodynamical model
that interconnects point defects parameters with bulk qualities.
