Machinabiltiy Rating

Machinability Ratings - Stainless

Grade	Approximate Surf. Ft. Per Min.	% Relative Speed Based on B-1112 as 100%	Grade	Approximate Surf. Ft. Per Min.	% Relative Speed Based on B-1112 as 100% (165 SFM)
302	70	40	420	85	50
302/304 "B"	55	28	420 F	125	68
303	150	75	430	110	66
303 High Tensile	80	43	430 F	150	75
304	70	40	431	80	48
304 L	70	40	440 A	65	40
309	60	36	440 C	65	40
310	60	36	440 F Se	80	48
316	60	22	446	60	36
316 "B"	50	36	Custom 455	55	28
316 L	60	36	PH-13-8 MO	60	36
317-317 L	60	36	15-5 PH	75	45
321	60	20	17-4 PH	75	45
330	45	36	17-4 PH "H1150"	85	50
347	60	54	17-7 PH	75	45
403	95	54	AM 355	72	42
410	95	75	Nitronic 40	50	22
416 Ann	150	50	Nitronic 50	50	22
416 H.T.	85	50	Nitronic 60	50	22
418 (Greek Ascoloy)	96	50	Carp. 20	70	40

Super Alloys - Electrical Steels
Grade	Approximate Surf. Ft. Per Min.	% Relative Speed Based on B-1112 as 100%	Grade	Approximate Surf. Ft. Per Min.	% Relative Speed Based on B-1112 as 100% (165 SFM)
Maraging "300"	60	36	Nickel "625"	20	12
A-286	54	28	718	20	12
4750	60	36	X-750	20	12
L-605	15	9	INVAR 36 "FM"	92	55
Nickel "200"	110	66	Waspaloy	45	20
Nickel "400"	80	48	Alloy C (C-276)	40	18
Nickel "405"	80	48	Alloy X	45	20
Nickel "K-500"	60	36	Kovar	60	22
Nickel "600"	50	22	Alloy R41	15	9