... 38-45 3.Plain Disc and Notched Disc 4.Diameter:12"-30" 5.Excellent Wear Resistance ... .5/421/457184603/3.5/411/2 , 13/4 , 21/4 , 25/1638/44/57/59194803.5/421 ... /457205103.5/4.513/4 , 2 , 21/4 , 21/244/51/57/63215353.5/4.521/263225603.5/4/5/621 ... 5/6/7/833/8 , 31/2 , 4 , 41/4 , 41/286/89/102/108/114287105/5. ... 8102/108/114/127/130307606/7/8/10/1143/4 , 51/4121/133compositionCMnSiSPNiCrCuNbcontents %0.62~0.700. ...