It was found that the data for 185W, at 1400 to 2200C, could be described by:

D (cm2/s) = 3.33 x 100 exp[-92.0(kcal/mol)/RT]

K.G.Kreider, G.Bruggemann: Transactions of the Metallurgical Society of AIME, 1967, 239, 1222-6