S TA N D A R D CUTTING CONDITIONS Internal turning Grade ISO Workpiece material First Choice CuttingFor surfacefinishFor wearresistancespeedVc (m/min)(High speed)Depth ofcutap (mm)Feedf (mm/rev) AH725 - - 50 - 180 0.3 - 2 0.08 - 0.3 Low carbon steel - - AH8015 50 - 200 0.3 - 2 0.08 - 0.3 SS400, S25C, etc. E275A, C25, etc. - NS9530 - 80 - 250 0.3 - 2 0.08 - 0.3 - GT9530 - 80 - 300 0.3 - 2 0.08 - 0.3 AH725 - - 50 - 180 0.3 - 2 0.08 - 0.3 Carbon steel - - AH8015 50 - 200 0.3 - 2 0.08 - 0.3 S45C, S55C, etc. C45, C55, etc. - NS9530 - 80 - 250 0.3 - 2 0.08 - 0.3 - GT9530 - 80 - 300 0.3 - 2 0.08 - 0.3 AH725 - - 50 - 180 0.3 - 2 0.08 - 0.3 Low alloy steel - - AH8015 50 - 200 0.3 - 2 0.08 - 0.3 SCM415, etc. 18CrMo4, etc. - NS9530 - 80 - 250 0.3 - 2 0.08 - 0.3 - GT9530 - 80 - 300 0.3 - 2 0.08 - 0.3 AH725 - - 50 - 180 0.3 - 2 0.08 - 0.3 Alloy steel - - AH8015 50 - 200 0.3 - 2 0.08 - 0.3 SCM440, SCr420, etc. 42CrMo4, 20Cr4, etc. - NS9530 - 80 - 250 0.3 - 2 0.08 - 0.3 - GT9530 - 80 - 300 0.3 - 2 0.08 - 0.3 Stainless steel (Austenitic) SUS304, SUS316, etc. AH8015 - - 50 - 150 0.3 - 2 0.08 - 0.3 X5CrNi18-9, X5CrNiMo17-12-3, etc. Stainless steel (Martensitic and ferritic) SUS430, SUS416, etc. AH8015 - - 50 - 150 0.3 - 2 0.08 - 0.3 X6Cr17, X20Cr13, etc. Stainless steel (Precipitation hardening) SUS630, etc. AH8015 - - 50 - 150 0.3 - 2 0.08 - 0.3 X5CrNiCuNb16-4, etc. Non ferrous MetalAluminum alloy, etc. KS05F - - 100 - 300 0.3 - 2 0.08 - 0.3 Non ferrous MetalCopper Alloy, etc. KS05F - - 100 - 300 0.3 - 2 0.08 - 0.3 Heat-resistant alloysTitanium alloys, etc.AH8015 - - 20 - 80 0.3 - 2 0.08 - 0.3 Heat-resistant alloys AH8015 - - 20 - 80 0.3 - 2 0.08 - 0.3 (Nickel-base alloys) Reference pages: A/E-SWLXR/L → 4-18, A/E-SDXXR/L, A/E-SDZXR/L → 4-25 4-32