The diffusive behavior of S was studied at 750 to 1025C. The results could be described by:

α-phase (780-880C):     D (cm2/s) = 2.7 x 100 exp[-49.0(kcal/mol)/RT]

γ-phase (935-1025C):     D (cm2/s) = 5.0 x 10-1 exp[-50.0(kcal/mol)/RT]

S.J.Wang, H.J.Grabke: Zeitschrift für Metallkunde, 1970, 61[8], 597-603