The D permeability of cold-rolled material at about 1atm, and temperatures ranging from 523 to 730K, could be described by:

D (cm2/s) = 3.22 x 10-4 exp[-19.828(kcal/mol)/RT]

Evidence for the reversible trapping of H at internal defects was found in autoradiographs of T-charged wires, and in the transient evolution rates of D from foils.

Hydrogen Transport in Molybdenum. G.R.Caskey, M.R.Louthan, R.G.Derrick: Journal of Nuclear Materials, 1975, 55[3], 279-83