INDEXABLE MILLING RECOMMENDED CUTTING CONDITIONS y Dry Cutting (inch) Work Material Hardness Grade Breaker vc (SFM) fz(IPT) ap ae P MP6120 M 820 (655 ─ 985) .012 (.008 ─ .016) < .197 < 0.8DC Mild Steel < 180HB VP15TF MP 820 (655 ─ 985) .012 (.008 ─ .016) < .197 < 0.8DC MP6130 M 720 (560 ─ 885) .016 (.012 ─ .020) < .197 < 0.8DC MP6120 M 720 (560 ─ 885) .012 (.008 ─ .016) < .197 < 0.8DC Carbon Steel,Alloy Steel 180 ─ 280HB VP15TF MP 720 (560 ─ 885) .012 (.008 ─ .016) < .197 < 0.8DC MP6130 M 620 (460 ─ 785) .016 (.012 ─ .020) < .197 < 0.8DC MP6120 M 460 (330 ─ 590) .012 (.008 ─ .016) < .197 < 0.8DC Carbon Steel,Alloy Steel 280 ─ 350HB VP15TF MP 460 (330 ─ 590) .012 (.008 ─ .016) < .197 < 0.8DC MP6130 M 360 (230 ─ 490) .016 (.012 ─ .020) < .197 < 0.8DC MP6120 M 460 (330 ─ 590) .006 (.004 ─ .008) < .118 < 0.8DC Alloy Tool Steel < 350HB(Annealing)VP15TF MP 460 (330 ─ 590) .006 (.004 ─ .008) < .118 < 0.8DC MP6130 M 360 (230 ─ 490) .010 (.008 ─ .012) < .118 < 0.8DC MP6120 M 460 (330 ─ 590) .006 (.004 ─ .008) < .118 < 0.8DC Pre-hardened Steel 35 ─ 45HRC VP15TF MP 460 (330 ─ 590) .006 (.004 ─ .008) < .197 < 0.8DC MP6130 M 360 (230 ─ 490) .010 (.008 ─ .012) < .118 < 0.8DC M Austenitic Stainless Steel < 200HB MP7030 MM 655 (490 ─ 820) .008 (.004 ─ .012) < .197 < 0.8DC Austenitic Stainless Steel > 200HB MP7030 MM 490 (330 ─ 655) .008 (.004 ─ .012) < .197 < 0.8DC Two-phase Stainless Steel < 280HB MP7030 MM 460 (330 ─ 590) .006 (.002 ─ .010) < .197 < 0.8DC Ferritic and MaltensiticStainless Steel< 200HB MP7030 MM 655 (490 ─ 820) .008 (.004 ─ .012) < .197 < 0.8DC Ferritic and MaltensiticStainless Steel> 200HB MP7030 MM 490 (330 ─ 655) .008 (.004 ─ .012) < .197 < 0.8DC Precipitation HardeningStainless Steel< 450HB MP7030 MM 425 (330 ─ 525) .006 (.002 ─ .010) < .197 < 0.8DC K MC5020 MK,HK 720 (490 ─ 985) .012 (.008 ─ .016) < .197 < 0.8DC Gray Cast Iron Tensile Strength< 350MPaVP15TF,VP20RTMK,HK 590 (425 ─ 755) .012 (.008 ─ .016) < .197 < 0.8DC VP15TF MP 590 (425 ─ 755) .012 (.008 ─ .016) < .197 < 0.8DC MC5020 MK,HK 655 (490 ─ 820) .008 (.004 ─ .012) < .197 < 0.8DC Ductile Cast Ilon Tensile Strength< 450MPaVP15TF,VP20RTMK,HK 560 (395 ─ 720) .008 (.004 ─ .012) < .197 < 0.8DC L VP15TF MP 560 (395 ─ 720) .008 (.004 ─ .012) < .197 < 0.8DC MC5020 MK,HK 560 (490 ─ 655) .008 (.004 ─ .012) < .197 < 0.8DC Ductile Cast Ilon Tensile Strength< 800MPaVP15TF,VP20RTMK,HK 460 (330 ─ 590) .008 (.004 ─ .012) < .197 < 0.8DC VP15TF MP 460 (330 ─ 590) .008 (.004 ─ .012) < .197 < 0.8DC H Hardened Steel 40 ─ 55HRC VP15TF MP 260 (195 ─ 330) .006 (.004 ─ .008) ≤ .118 < 0.8DC Note1) Recommended wet cutting for good surface finishing of stainless steel. (Tool life is short compared to wet cutting.) Note2) We recommend wet cutting with internal coolant for titanium alloy and heat resistant alloy, Note3) When clamp rigidity is low and tool overhang is long, we recommended to reduce the cutting speed and the feed rate by 30%. L054 INDEXABLE MILLING