Steels with fine ferritic-austenitic lath microstructure with high strength and toughness have also shown to have good sliding and sliding-rolling wear resistance. In this work has one of these so called carbide free bainitic (CFB) steels been tested in two heat treated conditions and compared with currently used quench and temper (QT) steel in an industrial application subjected to a complex mixture of erosion- and abrasion-wear in combination with impact resistance. In addition have these steels been subjected to abrasive laboratory test.The wear resistance has been determined by the specific wear rate for the laboratory tested samples and by measuring the volume and weight losses in the field tests. The microstructural changes in the steels have been investigated by optical- and scanning electron-microscopy. The hardness and hardness changes of the different steels have been investigated.The results show that the abrasive wear rate of the CFB steel is up to 50 % lower in comparison to the QT steel in the laboratory tests. The field tests show that the volume and weight loss of the CFB steel in the 2 tested conditions is less than 10 % in comparison with that of the currently used QT steel. The improved wear resistance of the CFB steel can be explained by the higher hardness and higher increase of the hardness in the surface layer of the CFB steel.