Chromizing is a suitable method for coating development for high temperature surface protection, corrosion and wear resistance.A homogenized dual phase Fe– 24%Mn – 8.3%Al– 5%Cr – 0.38%Si– 0.34%Mo – 0.45%C cast alloy was chromized with a pack cementation process at 10008C for 1 – 16 h. A chromized surface layer and an adjacent processing-related ferrite layer ranging from 80 to 100 mm in depth were formed. The thickness of the chromized layerXvs. the coating timet obeys the parabolic law:, where Kis evaluated to be 5.89 mmy . The primary phase on the chromized surface is (Cr, Fe)N and the rest is yy XsKt h 21yx Cr C , while the internal part of chromized layer is Cr C phase. An appreciable increase of the surface hardness ranging from 23 6 7 3 2015 to 2458 HK is achieved due to the formation of chromium carbide layer. A significant improvement of the corrosion resistance in 3.5 wt.% NaCl aqueous solution is obtained. Chromized specimens exhibit only one-tenth weight loss compared to uncoated specimens when immersed in 90% Na SO and 10% NaCl molten salt at 8778C for 48 h.