Mn18Cr2. Mn18Cr2 is the most popular material for casting cone crusher liners. This Mn18Cr2 cone crusher liners widely in crushing difficult and non-abrasive blasted rock, medium and non-abrasive,non-abrasive gravel, and non-abrasive round rock. Mn22Cr2. Mn22Cr2 cone crusher liners are widely used in crushing hard and abrasive stones.