Fe-Mn-Al-C series high Al steel was a new type of lightweight austenitic alloy steel with excellent mechanical properties.In this paper，the wear resistance of Fe-20Mn-6Al-1.5C-5Cr test steel in as-cast state （ZG-1-Z） and forging state（ZG-1-D） was studied by impact wear test，and compared with Mn13 steel.The test results show that the weight loss rate of Mn13 steel increases linearly with the increase of impact time，while the weight loss rate of test steel（ZG-1-Z，ZG-1-D） also increases with the increase of impact time，but impact has a relatively small effect on the growth of weight loss rate when the impact time is 1 h and 2 h.The wear form of Mn13 steel is mainly characterized by plastic deformation，and the wear surface of the test steel（ZG-1-Z，ZG-1-D） shows a large-area cutting furrow morphology，and a fatigue crack layer with a thickness of about 5 μm is formed on the surface.According to the nanoindentation test，different impact times have little effect on the hardness value of Mn13 steel，and have a great influence on the hardness value of as-cast（ZG-1-Z） test steel，while the hardness of forged （ZG-1-D） test steel changes steadily，with obvious hardening layer and high overall hardness value.