Abstract: The abrasion behaviour of materials for scoop teeth of dredgers is a subject worthy of thorough study,therefore the effect of chemical composition and heat treatment regime on material properties has been studied,and the dependence of abrasion resistance of materials on hardness and impact propcrty has been examined by means of ML 100 abrasion rig in the conditions that water was used as a lubricant and that no lubricant was used.The results showed that the wears of all materials in the former condition are larger than those in the latter condition,and the materials with both higher hardness and impact toughness ( CVN value) have higher abrasion resistance,and the scoop teeth which are made of these materials have longer service life.