MATERIAL		Hardness BHN	Machinability Rating
Alloy Steels, Cast	Material Grade	Range	Range
Low Carbon	1320, 2315, 2320	150-300	.52 - .32
	4110, 4120, 4320,
	8020, 8620
Medium Carbon	1330, 1340, 2325,	175-400	.36 - .16
	2330, 4125, 4130,
	4140, 4330, 4340,
	8030, 80B30, 8040
	8430, 8440, 8630,
	8640, 9525, 9530,
	9535
Alloy Steels, Wrought
Low Carbon	4012, 4024, 4028,	125-425	.56 - .24
	4320, 4427, 4617,
	4621, 4718, 4817,
	5015, 5120, 8115,
	8620, 8625, 8720,
	9310
Medium Carbon	1330, 4032, 4130,	175-52RC	.36 - .08
	4135, 4140, 4145,
	4150, 4340, 5130,
	5140, 5147, 5150,
	6150, 8630, 8637,
	8640, 8642, 9255,
	9260
High Carbon	50100, 51100,
	52100, M-50
Free Machining Alloy Steels, Wrought
Medium Carbon, Resulfurized	4140, 4150	150-425	.52 - .32
Medium & High Carbon Leaded	41L30, 41L40,	150-425	.60 - .36
	41L47, 41L50,
	43L47, 51L32,
	52L100, 86L20,
	86L40
Armor Plate, Wrought
	MIL-S-12560	250-300	0.28
Aluminum Alloys, Cast		40-100	4.80
Sand and Permanent Mold	X201.0, 213.0, 242.0,	40-125 (500 kg)	4.80 - 3.20
	8295.0, 319.0, F332.0,
	355.0, 356.0, 357.0,
	514.0, 520.0, A712.0,
	713.0, 850.0
Die Castings	360.0, A360.0, A380.0,	40-125 (500 kg)	.32 - .24
	384.0, 392.0, A413.0,
	443.0
Aluminum Alloys, Wrought		30-150 (500 kg)	4.80 - 3.20
	EC, 1060, 1145,
	1235, 2014, 2018,
	2024, 2217, 2218,
	2618, 3004, 4032,
	5050, 5056, 5086,
	5252, 5454, 5457,
	5657, 6061, 6066,
	6101, 6262, 6951,
	7004, 7039, 7075, 7175
Carbon Steels, Cast		100-300	.64 - .40
Low & Medium Carbon	1010, 1020, 1030,
	1040, 1050
Carbon Steels, Wrought		85-275	.80 - .44
Low Carbon	1005, 1009, 1011,
	1012, 1016, 1018,
	1019, 1022,1025,
	1026, 1518
Medium Carbon	1030, 1035, 1038,	125-425	.60 - .28
	1040, 1043, 1045,
	1049, 1053, 1524,
	1526, 1536
High Carbon	1060, 1065, 1070,	175-375	.44 - .28
	1075, 1080, 1085,
	1090, 1547,1551,
	1561, 1572
Free Machining Carbon Steels, Wrought		100-150	.80 - 1.00
Low Carbon Resulferized	1212, 1108, 1213, 1116,
	1118, 1211, B-1112
Medium Carbon Resulferized	1132, 1140, 1141, 1151	175-425	.72 - .28
Low Carbon Leaded	12L13, 12L14	100-250	1.12 - 1.08
Ductile Cast Irons
Ferritic	60-40-18, 65-45-12	140-190	1.00
Ferritic-Pearlitic	80-55-06	190-260	.64 - .52
Pearlitic-Martensitic	100-70-03	240-300	0.40
Martensitic	120-90-02	270-400	.28 - .20
Austenitic (NI-RESIST Ductile)	ASTM A439: Types D-2,	120-200	0.24
	D-2C, D-5, D-3A, D-5B
	ASTM A571: Type D-2M
	ASTM A439: Types	140-275	0.16
	D-28, D-3, D-4
Gray Cast Irons
Ferritic	ASTM A48: Class 20	120-150	1.2
	SAE G1800
Pearlitic-Ferritic	ASTM A48: Class 25	160-200	0.88
	SAE G2500
Pearlitic	ASTM A48: Classes 30,	190-220	0.64
	35 & 40
	SAE G3000
Pearlitic & Free Carbides	ASTM A48: Classes	220-260	0.6
	45 & 50
	SAE G3500, G4000
Pearlitic or Acicular & Free Carbides	ASTM A48: Classes 55,	250-320	0.32
	60 & 65+
Austenitic (NI-RESIST)	ASTM A436: Types 1,	100-250	.52 - .32
	1b, 5
	ASTM A436: Types 2,
	3, 6
Malleable Cast Irons
Ferritic	32510, 35018	110-160	1.20
Pearlitic	40010, 43010, 45006,	160-240	.88 - .64
	45008, 48005, 50005
Martensitic	53004, 70003, 60004,	200-320	.60 - .28
	70002, 70004, 80002,
	90001
Copper Alloys, Cast
	834, 838, 844, 854,	40-150 (500 kg)	1.6
	857, 864, 867, 928,
	934, 937,939, 944,
	957, 973, 976
	817, 853, 872, 876,	40-175 (500 kg)	1.4
	905, 923, 926, 947,
	952, 958
	801, 807, 815, 822,	40-200 (500 kg)	0.68
	826, 863, 907, 910,
	913, 916, 963
Copper Alloys, Wrought
	314, 330, 353, 360,	10RB - 100RB	1.60 - 2.00
	367, 368, 377, 485
	226, 230, 268, 280,	10RB - 100RB	1.40 - 1.60
	464, 465, 467, 675,
	770
	102, 113, 115, 116,	10RB - 100RB	.68 - .80
	170, 175, 505, 524,
	706, 745, 754
High Strength Steels, Wrought
	300M, 4330V, 4340,	225-400 43RC - 52RC
	D6ac(?), H11, H13
		325-375 43RC - 48RC
		325-375
High Temperature Alloys
Nickle Base, Wrought	Inconel Alloy 625,	200-400	.16 - .12
	702, 706, 718, 721, 722,
	X-750, 751, & 901
	M252
	Nimonic 75 & 80
	Waspoloy (?)
	Astroloy, Inconel Alloy 700	225-400	.12 - .09
	Nimonic 90 & 95, Rene 41
	Udimet 500, 700, 710
	Hastelloy B, C, G, X	140-310	.16 - .12
	Incoloy 804, 825
	Inconel Alloy 600, 604
	Refractaloy 26
	Udimet 630
	TD-Nickle	180-200	.48
Nickle Base, Cast	Hastelloy B & C ASTM A296	200-375	0.12
Cobalt Base, Wrought	Haynes Alloy 25, 188 J-1570	180-320	.16 - .08
	MAR-M905, MAR-M918
	S-816
Iron Base, Wrought	A-286, Discoloy	180-320	.28 - .20
	Incoloy 800, 801, 802
	N-155
Manganese, Wrought
		140-220	0.28
Magnesium Alloys, Cast
	AM100A, AZ81A, AZ918,	40-90 (500kg)	4.80
	AZ91C, EZ33A, HZ32A,
	K1A, ZE41A, ZK51A
Magnesium Alloys, Wrought
	AZ21X1, AZ31C, AZ80A,	40-90 (500kg)	4.80
	HM21A, LA141A, ZK60A
Maraging Steels, Wrought
	120 Grade	275-325	0.36
	180 Grade	375-425	0.28
	200 Grade, 250 Grade	275-325 50RC-52RC	.32 - .12
	300 Grade, 350 Grade
Nickel Alloys, Wrought & Cast
	Nickel 200, 201, 205, 211,	80-170	0.56
	220, 230, & 270
	Monel 400, 401, 404,	115-240	0.44
	and R-405
	ASTM A296: Grades CZ-100
	M-35
	Duranickel 301	150-360	.16 - .12
	Monel 502 & K-500
	Ni-Span-C 902
	Permanickel 300
Nitriding Steels, Wrought
	Nitralloy 125, 135, 225, 230	200-350	.52 - .40
	EZ & N.  Nitrex 1
Refractory Alloys, Cast, Wrought, P/M
Molybdenum	MO, TZC, Mo-50Re, TZM	220-290	0.80
Stainless Steels, Cast
Ferritic	ASTM A217: Grades C5, C12	135-185	0.60
	ASTM A296: Grades CB-30,
	CC-50, CE-30
Austenitic	ASTM A296: Grades CF-16F,	140-170	0.64
	CN-7M
	ASTM A296: Grades CF-3,	135-185	0.56
	CF-8, CF8C, CF-20
	ASTM A451: Grades CPF8,
	CPF8C, CPF8C (Ta-Max)
	ASTM A296: Grades CF-3M,	135-185	0.56
	CF-8M, CG-8M, CG-12,
	CH20, CK20
	ASTM A-451: Grades CPF8M,
	CPF10MC, CPH8, CPH10,
	CPH20, CPK20
	ASTM A297: Grades HD, HE,	160-210	0.28
	HF, HH, HI, HK, HL, HN,
	HT, HU
Martensitic	ASTM A296: Grades CA-15,	135-225	.48 - .40
	CA-40
	ASTM A426: Grades CP7,
	CP9
	ASTM A296: Grades CA-15,	275-425	.24 - .16
	CA-40
	ASTM A426: Grades CP7,
	CP9
Stainless Steels, Wrought
Ferritic	405, 430, 436, 446,	135-185	0.68
	409, 434, 442, 502
Austenitic	201, 302, 304, 304L,	135-275	.64 - .44
	321, 347
	310, 310S, 314, 316,	135-185	0.36
	316L, 317, 330
Martensitic	403, 410, 420	135-275	.56 - .36
	414
Free Machinings Stainless Steels, Wrought
Ferritic	430F, 430F Se	135-185	0.96
Austenitic	230EZ, 303, 303Se, 303MA,	135-275	.76 - .48
	303Pb, 303Cu, 303 Plus X
Martensitic	416, 416Se, 416 Plus X, 420F,	135-425	.88 - .24
	420F Se, 440F, 440F Se
Precipitation Hardening Stainless Steels, Cast
	ACI Grade C8-7CU	325-450	.12 - .08
	ACI Grade C0-4MO
Precipitation Hardening Stainless Steels, Wrought
	15-5 PH, 17-4 PH, 17-7 PH	150-375	.32 - .16
	17-14 CuMo AM-350
	AM-355, PH 13-8 Mo
	PH14-8 Mo, PH 15-7 Mo
Titanium Alloys, Wrought
Commercially Pure	99.5, 99.2, 99.0, TI-0.2Pd,	110-275	.96 - .64
	99.0, 98.9
Alpha and Alpha-Beta Alloys	Ti-8Mn,	300-340	0.46
	Ti-2A1-11Sn-5Zr-1Mo,
	Ti-5A1-2-5Sn,
	Ti-5A1-6Sn-2Zr-1Mo,
	Ti-6A1-2Sn-4Zr-2Mo-25Si
	Ti-6A1-2Sn-4Zr-6Mo
	Ti-6A1-4V	310-350	0.36
	Ti-6A1-4V-CL1 (???)
	Ti-6A1-6V-2Sn	320-370	0.32
	Ti-7A1-4Mo
	Ti-1A1-8V-5Fe	320-380	0.28
	Ti-6A1-4V	320-380	0.24
	Ti-6A1-2Sn-4Zr-2Mo
	Ti-6A1-2Sn-4Zr-6Mo
	Ti-4A1-3Mo-1V	375-420	0.2
	Ti-7A1-4Mo
	Ti-1A1-8V-5Fe	375-440	0.12
Beta Alloys	Ti-3A1-8V-6Cr-4Mo-4Zr	275-440	.20 - .09
	Ti-4.5Sn-6Zr-11.5Mo
	Ti-13V-11Cr-3A1
Tool Steels, Wrought
High Speed	M1, M2, M6, M10, T1, T2,	220-275	.32 - .20
	T6, M3 Type 2, T15
	M3, M7, M33, M34, M36,	225-275	0.28
	M41, M42, M43, M44,
	M46, M47, T4, T5
Hot Work	H10, H11, H12,	150-375 (48Rc-50Rc)	.32 - .08
	H13, H14
	H21, H24, H41, H42	150-250	.32 - .24
Cold Work	A7, D4	200-250	0.2
	A2, A4, A8, A10, 01, 02,	200-250	0.32
	06, 07
Shock Resisting	S1, S2, S5, S7	175-225	0.44
Zinc Alloys, Cast
	AMS 4803A, ILZRO 12,	80-100	2.00
	ILZRO 13, SAE 903, SAE 925,
	ZDC No. 7
Zirconium Alloys, Wrought
	Zr-2%Hf (Grade 11)	140-280	1.20
	Zr-0.0C1%Hf (Grade 21)
	Zircaloy 2 (Grade 32)
	Zircaloy 4 (Grade 34)