Sintered Alloy MB710MD205 MB730MD220 MB4120 MB4120MD230 MBS140MD2030 Cutting Speed vc (SFM)Cutting Speed vc (SFM) Wear Resistance CBN & PCD TURNING INSERTS aSintered Alloy ISO NON-COATED CBN SERIES 985 MB4120 10 20 B 330 30 Continuous cutting Medium interrupted cutting Heavy interrupted cutting The CBN grade “MB4120” for sintered alloy and cast iron cutting can be used widely from continuous cutting to interrupted cutting in the processing of cast irons such as sintered alloys for valve mechanism parts and oil pump parts. aCast Iron 8200 ISO NON-COATED CBN SERIES 6560 10 4920 MB4120MB730 K 20 30 3280 MBS140 1640 MB710 0 0 .039 .079 .118 .157 Depth of Cut ap (inch) Lineup of grades available from general cutting to deep depth cutting for high efficiency machining. aAluminum Alloy ISO PCD MD205 10 MD220 N 20 MD230 30 MD2030 Fracture Resistance Suitable for cutting materials such as nonferrous metals and fiber reinforced plastics (FRP) including aluminum alloys. It supports ultra high speed finish cutting. B005