It was found that the diffusion data for Sn, at 750 to 950C, could be described by:

D (cm2/s) = 4.72 x 10-2 exp[-40.85(kcal/mol)/RT]

V.N.Kaigorodov, S.M.Klotsman, A.N.Timofeev, I.S.Trakhtenberg: Fizika Metallov i Metallovedenie, 1969, 28[1], 120-8