4Flute milling cutter cutting speed recommendations for processing different steel materials

Material to be processed	Pre-hardened steel/quenched and tempered steel<35-48HRC		Quenched steel<48-52HRC		Quenched steel<48-60HRC
diameter	Rotation speed (rev/min)	Feed speed mm/min	Rotation speed (rev/min)	Feed speed mm/min	Rotation speed (rev/min)	Feed speed mm/min
cutting depth	Side milling ap≤1.5D ae≤0.05D		Side milling ap≤1D ae≤0.03D		Side milling ap≤1D ae≤0.02D
3	14700	840	13130	530	11550	460
4	7560	950	6720	630	5880	530
6	5040	1050	4410	740	3890	610
8	3780	1160	3360	840	2940	660
10	3050	1100	2630	740	2310	600
12	2520	1050	2210	670	2000	580
16	2000	950	2000	400	1800	370
20	1600	850	1600	320	1250	315

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