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STANDARD CUTTING CONDITIONS

ISO	Workpiece materials	Hardness	Grades	Cutting speed Vc (m/min)	Feed per tooth fz (mm/t)
	Low carbon steel SS400, S15C , etc. E275A, C15E4, etc.	- 200 HB	AH3225	100 - 250	0.05 - 0.12
	Carbon steel and alloy steel S55C, SCM440, etc. C55, 42CrMo4, etc.	- 300 HB	AH3225	100 - 230	0.05 - 0.12
	Prehardend steel NAK80, PX5, etc.	30 - 40 HRC	AH3225	100 - 180	0.05 - 0.1
	Stainless steel SUS304, etc. X5CrNi18-9, etc.	-	AH3225	90 - 200	0.05 - 0.1
	Grey cast iron FC250, etc. 250, etc., GG25, etc.	150 - 250 HB	AH120	100 - 300	0.05 - 0.12
	Ductile cast iron FCD450, etc. 450-10S, etc., GGG45, etc.	150 - 250 HB	AH120	100 - 200	0.05 - 0.12
	Titanium alloys Ti-6AI-4V, etc.	-	AH3225	20 - 60	0.04 - 0.07
	Heat-resistant alloys Inconel 718, etc.	-	AH8015	20 - 40	0.04 - 0.07
	SKD61, etc. X40CrMoV5-1, etc.	40 - 50 HRC	AH8015	50 - 150	0.04 - 0.07
	SKD11, etc. X153CrMoV12, etc. Hardened steel	50 - 60 HRC	AH8015	40 - 70	0.04 - 0.07

Remove excessive chip accumulation with an air blast.
Cutting conditions may be limited depending on machine power, workpiece
For the operation with depth of cut which varies (ex.casting skin) and rigidity, and spindle output. When the cutting width, depth, or overhang machining of workpiece materials with interrupted surface, the feed per tooth (fz) length is large, set Vc and fz to the lower recommended values and check should be set to the lower recommended value shown in the above table. the machine power and vibration.