This　article　reports　the　results　of　an　experimental　program　aimed　at　improving　ball　mill　availability　by　increasing　the　wear　resistance　of　ball　mill　liners.　The　ball　mill　liners　made　from　the　wear-resistant　alloy　steel　containing　0.8-2.0wt%B　(viz.　boron　alloy　steel)　have　been　developed.　The　effects　of　quenching　temperature　on　the　microstructural　modification,　mechanical　properties,　and　wear　resistance　of　boron　alloy　steel　have　been　investigated　by　optical　microscopy　(OM),　scanning　electron　microscopy　(SEM),　X-ray　diffraction　(XRD)　analysis,　impact　tester,　hardness　tester,　and　impact　wear　tester.　The　results　show　that　the　hardness　of　boron　alloy　steel　increases,　and　impact　toughness　has　no　obvious　change,　when　the　quenching　temperature　increases.　When　the　quenching　temperature　reaches　1000　degrees　C,　the　matrix　of　boron　alloy　steel　transforms　into　the　lath　martensite,　and　there　is　excellent　wear　resistance.　After　quenching　at　1000　degrees　C　and　tempering　at　220　degrees　C,　boron　alloy　steel　liners　have　excellent　wear　resistance　and　do　not　break　in　the　use.　Its　servicing　cycle　is　1.6　times　longer　than　that　of　high　manganese　steel　liner.　Boron　alloy　steel　liner　does　not　contain　valuable　alloy　elements　and　has　simple　production　process　and　low　production　cost.