Hardness Conversion Chart - HBW to HRC Conversion Table

Approximate hardness conversion for non-austenitic steels.*

BRINELL

ROCKWELL

VICKERS

KNOOP (1kg load max)

Ultimate Tensile
Strength (ksi)

Indentation
Dia. (mm)

HBW
10/3000

HRC

HRB

HV
(HRC range)

HV
(HRB range)

HK
(HRC range)

HK
(HRB range)

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2.45	627	58.6		664		703		346.2
2.50	601	57.3		638		677		328.9
2.55	578	56.1		615		652		313.7
2.60	555	54.8		591		627		298.4
2.65	534	53.5		569		603		287.5
2.70	514	52.2		548		579		274.5
2.75	495	50.9		528		556		263.4
2.80	477	49.6		508		533		251.8
2.85	461	48.3		491		513		241.7
2.90	444	46.9		472		492		230.4
2.95	429	45.7		456		474		219.8
3.00	415	44.4		440		456		211.5
3.05	401	43.1		425		439		201.8
3.10	388	41.8		411		424		192.7
3.15	375	40.5		397		408		184.4
3.20	363	39.3		383		394		177.6
3.25	352	38.1		372		382		170.4
3.30	341	36.8		360		369		164.1
3.35	331	35.7		349		358		158.2
3.40	321	34.4		338		347		153.0
3.45	311	33.0		327		334		149.0
3.50	302	32.0		318		327		146.3
3.55	293	30.8		308		317		140.6
3.60	285	29.7		300		309		137.6
3.65	277	28.6		291		301		134.0
3.70	269	27.4		283		293		130.1
3.75	262	26.3		275		286		127.0
3.80	255	25.2		268		279		123.8
3.85	248	24.1		261		272		119.7
3.90	241	22.9	100	254	241	266	253	116.3
3.95	235	21.8	99	247	235	260	248	114.3
4.00	229	20.8	98	241	229	254	242	110.0
4.05	223	19.7	97	238	223	251	237	105.5
4.10	217		96		217		232	102.3
4.15	212		95		212		227	100.7
4.20	207		95		207		222	98.8
4.25	201		93		201		217	94.8
4.30	197		93		197		213	92.8
4.35	192		92		192		208	90.8
4.40	187		90		187		202	89.4
4.45	183		89		183		198	88.6
4.50	179		89		179		194	87.5
4.55	174		87		174		189	85.0
4.60	170		86		170		185	83.3
4.65	167		85		167		182	82.5
4.70	163		84		163		178	81.3
4.75	159		83		159		173	80.0
4.80	156		82		156		170	77.0
4.85	152		81		152		166	72.7
4.90	149		80		149		163	71.3
4.95	146		79		146		160	69.7
5.00	143		78		143		157	68.7
5.05	140		76		140		152	67.5
5.10	137		75		137		151	66.0
5.15	134		74		134		147	64.7
5.20	131		73		131		144	63.5
5.25	128		71		128		141	62.3
5.30	126		70		126		139	61.5
5.35	123		69		123		137	60.0
5.40	121		68		121		135	59.0
5.45	118		66		118		132	57.5

*All conversions are based on ASTM E140-12bε1 and ASTM A370-13

Disclaimer: Although the information set forth herein is believed to be correct, Scot Forge makes no recommendation, or offers no warranty of any kind, with respect to the subject matter or its accuracy. Scot Forge specifically disclaims all warranties, expressed, implied or otherwise, including, without limitation, all warranties of merchantability, fitness or suitability for a particular purpose or application.

Download Hardness Conversion Chart

Common Carbon Steel Composition

Maximum weight % unless a range or minimum is shown.

1018	1020	1021	1026	1029	1030	1035	1040	1045	1050	1055	1060	1065	1070	1080	1117	1141	1146	ABS Grade 2	A-105	15B22 MOD	1545	A350 LF2
0.15-0.20	0.18-0.23	0.18-0.23	0.22-0.28	0.25-0.31	0.28-0.34	0.32-0.38	0.37-0.44	0.43-0.50	0.48-0.55	0.50-0.60	0.55-0.65	0.60-0.70	0.65-0.75	0.75-0.88	0.14-0.20	0.37-0.45	0.42-0.49	0.35	0.35	0.20-0.25	0.42-0.53	0.35
0.60-0.90	0.30-0.60	0.60-0.90	0.60-0.90	0.60-0.90	0.60-0.90	0.60-0.90	0.60-0.90	0.60-0.90	0.60-0.90	0.60-0.90	0.60-0.90	0.60-0.90	0.60-0.90	0.60-0.90	1.00-1.30	1.35-1.65	0.70-1.00	1.35	0.60-1.05	0.80-1.10	1.00-1.25	0.60-1.35
0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.050	0.035	0.040	0.045	0.035
0.050	0.050	0.050	0.050	0.050	0.050	0.050	0.050	0.050	0.050	0.050	0.050	0.050	0.050	0.050	0.08-0.13	0.08-0.13	0.08-0.13	0.050	0.040	0.050	0.20-0.30	0.040
(1)	(1)	(1)	(1)	(1)	(1)	(1)	(1)	(1)	(1)	(1)	(1)	(1)	(1)	(1)	(1)	(1)	(1)	-	0.10-0.35	0.15-0.35	0.10	0.15-0.30
-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.40	-	0.25	0.40
-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.30	-	0.25	0.30
-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.12	-	0.10	0.12
-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.05	-	-	0.05
-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	0.40	-	-	0.40
-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	Cb, 0.02 max.; Cu+Ni+Mo, 1.00 max; Cr+Mo, 0.32 max.	B, 0.0005-0.0030	-	Cb, 0.02 max.; Cu+Ni+Cr+V+Mo, 1.00 max; Cr+Mo, 0.32 max.
SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	SAE J403 MAY94	ABS, Part 2, 1997	ASTM A105-96	CAT 1E0621-15	Custom grade	ASTM A350-97

Other

Source

(1) Not required by specification but may be specified

Common Alloy Steel Composition

Maximum weight % unless a range or minimum is shown.

4140	4142	4145	4150	4150 RES	4320	4330V	4340	4350	4620	4820	6150	8620	8630	8822	9310	9850	52100	EX55	HY80	HY100	A182 F1	A182 F5	A182 F11	A182 F12	A182 F22	A182 F91	A336 F1	A336 F22a	A508 Cl.2	A508 Cl.3	MIL-S-23284 Cl.1	MIL-S-23284 Cl.2	Nitralloy "N"	Nitralloy 135
0.38-0.43	0.40-0.45	0.43-0.48	0.48-0.53	0.48-0.53	0.17-0.22	0.28-0.33	0.38-0.43	0.48-0.55	0.17-0.22	0.18-0.23	0.48-0.53	0.18-0.23	0.28-0.33	0.20-0.25	0.07-0.13	0.48-0.53	0.98-1.10	0.12-0.17	0.12-0.18	0.12-0.20	0.28	0.15	0.10-0.20 (2)	0.10-0.20	0.05-0.15	0.08-0.12	0.30-0.30	0.05-0.15	0.27	0.25	0.28	0.26	0.22-0.27	0.38-0.43
0.75-1.00	0.75-1.00	0.75-1.00	0.75-1.00	0.75-1.30 (1)	0.45-0.65	0.75-1.00	0.60-0.80	0.60-0.80	0.45-0.65	0.50-0.70	0.70-0.90	0.70-0.90	0.70-0.90	0.75-1.00	0.40-0.70	0.70-0.90	0.25-0.45	0.70-1.00	0.10-0.40	0.10-0.40	0.60-0.90	0.30-0.60	0.30-0.80	0.30-0.80	0.30-0.60	0.30-0.60	0.60-0.80	0.30-0.60	0.50-1.00	1.20-1.50	0.15-0.45	0.15-0.45	0.50-0.70	0.50-0.80
0.030	0.030	0.030	0.030	0.035	0.030	0.025	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.025	0.040	0.025	0.025	0.015	0.015	0.045	0.030	0.040	0.040	0.040	0.020	0.025	0.025	0.025	0.025	0.020	0.020	0.035	0.025
0.040	0.040	0.040	0.040	0.040	0.040	0.025	0.040	0.040	0.040	0.040	0.040	0.040	0.040	0.040	0.025	0.040	0.025	0.025	0.008	0.008	0.045	0.030	0.040	0.040	0.040	0.010	0.025	0.025	0.025	0.025	0.015	0.015	0.040	0.025
0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.20-0.35	0.15-0.35	0.20-0.35	0.15-0.35	0.15-0.35	0.15-0.35	0.50	0.50-1.00	0.10-0.60	0.5	0.20-0.50	0.20-0.35	0.50	0.15-0.40	0.15-0.40	0.35	0.35	0.15-0.35	0.20-0.40
-	-	-	-	0.25	1.65-2.00	1.65-2.00	1.65-2.00	1.65-2.00	1.65-2.00	3.25-3.75	-	0.40-0.70	0.40-0.70	0.40-0.70	3.00-3.50	0.85-1.15	-	1.65-2.00	2.50-3.25	2.75-3.50	-	0.50	-	-	-	0.4	-	-	0.50-1.00	0.40-1.00	2.75-3.50	2.75-3.25	3.25-3.75	0.25
0.80-1.10	0.80-1.10	0.80-1.10	0.80-1.10	0.80-1.10	0.40-0.60	0.75-1.00	0.70-0.90	0.70-0.90	-	-	0.80-1.10	0.40-0.60	0.40-0.60	0.40-0.60	1.00-1.40	0.70-0.90	1.30-1.60	0.45-0.65	1.35-1.80	1.35-1.80	-	4.0-6.0	1.00-1.50	0.80-1.25	2.00-2.50	8.0-9.5	-	2.00-2.50	0.25-0.45	0.25	0.50	0.50	1.00-1.35	1.40-1.80
0.15-0.25	0.15-0.25	0.15-0.25	0.15-0.25	0.15-0.25	0.20-0.30	0.35-0.50	0.20-0.30	0.20-0.30	0.20-0.30	0.20-0.30	-	0.15-0.25	0.15-0.25	0.30-0.40	0.08-0.15	0.20-0.30	-	0.65-0.80	0.30-0.60	0.30-0.60	0.44-0.65	0.44-0.65	0.44-0.65	0.44-0.65	0.87-1.13	0.85-1.05	0.40-0.60	0.90-1.10	0.55-0.70	0.45-0.60	0.25-0.60	0.25-0.60	0.20-0.30	0.30-0.40
-	-	-	-	-	-	0.05-0.10	-	-	-	-	0.15 min.	-	-	-	-	-	-	-	0.03	0.03	-	-	-	-	-	0.18-0.25	-	-	0.05	0.05	0.08	0.05	-	-
-	-	-	-	0.35	-	0.35 max.	-	-	-	-	-	-	-	-	0.35	-	-	-	0.25	0.25	-	-	-	-	-	-	-	-	-	-	-	-	-	0.35
-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	B, 0.001 max.	-	-	-	Ti, 0.02 max	Ti, 0.02 max	-	-	-	-	-	Cb, 0.06-0.10; N, 0.03-0.07; Al, 0.04 max.	-	-	-	-	P+S, 0.03 max (3)	P+S, 0.03 max (3)	Al, 0.95-1.30	Al, 0.95-1.30
SAE J404 APR94	SAE J404 APR94	SAE J404 APR94	SAE J404 APR94	ASTM A322-91 w/modifications	SAE J404 APR94	AMS 6427H	SAE J404 APR94	SAE J404 APR94 w/modifications	SAE J404 APR94	SAE J404 APR94	SAE J404 APR94	SAE J404 APR94	SAE J404 APR94	SAE J404 APR94	AMS 6260M	SAE J1249 APR94	SAE J404 APR94	-	MIL-S-23009C(SH)	MIL-S-23009C(SH)	ASTM A182-98a	ASTM A182-98a	ASTM A182-98a	ASTM A182-98a	ASTM A182-98a	ASTM A182-98a	ASTM A336-97	ASTM A336-97	ASTM A508-95	ASTM A508-95	MIL-S-23284A(SH)	MIL-S-23284A(SH)	ASTM A355-89	AMS 6470J

Other

Source

(1) Several different Mn ranges are available. Contact your Scot Forge sales representative for additional information.

(2) ASTM A182 F11, Class 1 is restricted to 0.05-0.15 C and 0.30-0.60 Mn

(3) See specification for additional residual element requirements

Common Tool Steel Composition

Maximum weight % unless a range or minimum is shown.

	D2	H13	L6
C	1.40-1.60	0.32-0.45	0.65-0.75
Mn	0.10-0.60	0.20-0.60	0.25-0.80
P	0.030	0.030	0.030
S	0.030	0.030	0.030
Si	0.10-0.60	0.80-1.25	0.10-0.50
Ni	-	-	1.25-2.00
Cr	11.00-13.00	4.75-5.50	0.60-1.20
Mo	0.70-1.20	1.10-1.75	0.5
V	0.50-1.10	0.80-1.20	-
Cu	-	-	-
Other	-	-	-
Source	ASTM A681-94	ASTM A681-94	ASTM A681-94

Common Stainless Steel Composition

Maximum weight % unless a range or minimum is shown.

304	304L	316	316L	317	321	347	403	405	410	416	420	431	440A	440C	Duplex 2205	13-8 Mo PH	15-5 PH	17-4 PH	254 SMO®	Nitronic 50	Nitronic 60	Ferralium® 255	A286
S-A	S-A	S-A	S-A	S-A	S-A	S-A	S-M	S-F	S-M	S-M	S-M	S-M	S-M	S-M	S-D	S-M-PH	S-M-PH	S-M-PH	S-A	S-A	S-A	S-D	S-A-PH
0.08	0.03	0.08	0.03	0.08	0.08	0.08	0.15	0.08	0.15	0.15	0.15 min.	0.20	0.60-0.75	0.95-1.20	0.030	0.05	0.07	0.07	0.020	0.06	0.10	0.04	0.08
2.00	2.00	2.00	2.00	2.00	2.00	2.00	1.00	1.00	1.00	1.25	1.00	1.00	1.00	1.00	2.00	0.10	1.00	1.00	1.00	4.00-6.00	7.00-9.00	1.5	2.00
0.045	0.045	0.045	0.045	0.045	0.045	0.045	0.040	0.040	0.040	0.06	0.040	0.040	0.040	0.040	0.030	0.008	0.040	0.040	0.030	0.040	0.040	0.04	0.025
0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.030	0.15 min.	0.030	0.030	0.030	0.030	0.020	0.010	0.030	0.030	0.010	0.030	0.030	0.030	0.025
1.00	1.00	1.00	1.00	1.00	1.00	1.00	0.50	1.00	1.00	1.00	1.00	1.00	1.00	1.00	1.00	0.10	1.00	1.00	0.80	1.00	3.50-4.50	1.00	1.00
8.00-10.50	8.00-12.00	10.00-14.00	10.00-14.00	11.00-15.00	9.00-12.00	9.00-13.00	-	-	-	-	-	1.25-2.50	-	-	4.50-6.50	7.50-8.50	3.50-5.50	3.00-5.00	17.50-18.50	11.50-13.50	8.00-9.00	4.50-6.50	24.00-27.00
18.00-20.00	18.00-20.00	16.00-18.00	16.00-18.00	18.00-20.00	17.00-19.00	17.00-19.00	11.50-13.00	11.50-14.50	11.50-13.50	12.00-14.00	12.00-14.00	15.00-17.00	16.00-18.00	16.00-18.00	22.0-23.0	12.25-13.25	14.00-15.50	15.0-17.5	19.50-20.50	20.50-23.50	16.00-18.00	24.0-27.0	13.50-16.00
-	-	2.00-3.00	2.00-3.00	3.00-4.00	-	-	-	-	-	0.6	-	-	0.75	0.75	3.00-3.50	2.00-2.50	-	-	6.00-6.50	1.50-3.00	-	2.9-3.9	1.00-1.50
-	-	-	-	-	-	-	-	-	-	Zr 0.60 max.	-	-	-	-	-	-	-	-	-	0.10-0.30	-	-	0.10-0.50
-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	2.50-4.50	3.00-5.00	0.50-1.00	-	-	1.50-2.50	-
-	-	-	-	-	Ti, 5xC min.	Cb-Ta, 10xC min.	-	Al, 0.10-0.30	-	-	-	-	-	-	N, 0.14-0.20	Al, 0.90-1.35 (4)	Cb, 0.15-0.45	Cb, 0.15-0.45	N, 0.180-0.220	Cb, 0.10-0.30; N, 0.20-0.40	N, 0.08-0.18	N, 0.10-0.25	Ti, 1.90-2.35; B, 0.003-0.010; Co, 1.00; Al, 0.35
SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	SAE J405 JAN89	UNS S32205	UNS S13889	UNS S15500	UNS S17400	UNS S31254	UNS S20910	UNS S21800	UNS S32550	AMS 5525G

Types:

Other

Source

Types:
S-A	Austenitic
S-F	Ferritic
S-M	Martensitic
S-D	Duplex
S-M-PH	Martensitic, Precipitation Hardenable
S-A-PH	Austenitic, Precipitation Hardenable

(1) See specification for additional residual element requirements

Common Nickel Alloy Composition

Maximum weight % unless a range or minimum is shown.

200	201	400	K500	600	625	718	800	825	901	C276
90.0 min	99.0 min	63-70 (3)	63.0 min (3)	72.0 min.	rem (2)	50.00-55.00	30.0-35.0	38.0-46.0	40.00-45.00	rem (2)
0.15	0.02	0.2	0.18	0.15	0.10	0.08	0.10	0.05	0.10	0.02
0.35	0.35	2.0	1.5	1.00	0.50	0.35	1.5	1.0	0.50	1.0
0.35	0.35	0.5	0.5	0.50	0.50	0.35	1.0	0.5	0.40	0.08
-	-	0.02	-	-	0.015	0.015	-	0.03	0.030	0.030
0.01	0.01	0.015	0.01	0.015	0.015	0.015	0.015	0.03	0.030	0.030
-	-	-	-	14.00-17.00	20.00-23.00	17.00-21.00	19.0-23.0	19.5-23.5	11.00-14.00	14.5-16.5
-	-	-	-	-	8.00-10.00	2.80-3.30	-	2.5-3.5	5.00-6.50	15.0-17.0
-	-	-	-	-	3.15-4.15	4.75-5.50	-	-	-	-
-	-	-	-	-	0.05	0.05	-	-	-	-
-	-	-	-	-	1.00	1.00	-	-	1.00	2.5
-	-	-	0.35-0.85	-	0.40	0.65-1.15	0.15-0.60	0.6-1.2	2.70-3.10	-
-	-	0.5	2.30-3.15	0.40	0.40	0.20-0.80	0.15-0.60	0.2	0.35	-
0.4	0.4	2.5	2.0	6.00-10.00	5.00	rem (2)	rem (2)	rem (2)	rem (2)	4.0-7.0
-	Cu, 0.25 max.	Pb, 0.006; Sn, 0.006; Zn, 0.02	Cu, 27.0-33.0 (4)	Cu, 0.50	(1)	B, 0.006; Cu, 0.30, (1)	Cu, 0.75	Cu, 1.5-3.0	B, 0.010-0.020; Cu, 0.50; (1)	V, 0.35; W, 3.0-4.5
UNS N02200	UNS N02201	QQ-N-281D	QQ-N-286F(SH)	AMS 5665L	AMS 5666E	AMS 5662K	UNS N08800	UNS N08825	AMS 5661E	UNS N10276

Other

Source

(1) See specification for additional residual element requirements

(2) remainder

(3) Ni + Co

(4) Cu + Ag

Common Copper Alloy Composition

Maximum weight % unless a range or minimum is shown.

C10100	C11000	C15000	C18000	C18100	C18150	C18200	C61400	C63000	C63200	C70600	C71500	C72420
99.99 min.	99.9 min.	99.8 min.	rem (2)	98.7 min.	rem (2)	rem (2)	rem (2)	rem (2)	rem (2)	rem (2)	rem (2)	rem (2)
-	-	-	0.10-0.6	0.40-1.0	0.50-1.5	0.6-1.2	-	-	-	-	-	0.50
0.0010	-	-	0.15	-	-	0.10	1.5-3.5	2.0-4.0	3.5-4.3	1.0-1.8	0.40-1.0	0.7-1.2
0.0010	-	-	2.0-3.0	2.0-3.0	-	-	-	4.0-5.5	4.0-4.8	9.0-11.0	29.0-33.0	13.5-16.5
-	-	-	0.40-0.8	-	0.10	0.10	-	0.25	0.10	-	-	-
-	-	0.10-0.20	-	0.08-0.20	0.05-0.25	-	-	-	-	-	-	-
-	-	-	-	-	-	-	6.0-8.0	9.0-11.0	8.7-9.5	-	-	1.0-2.0
0.0005	-	-	-	-	-	-	1.0	1.5	1.2-2.0	1.0	1.0	3.5-5.5
0.0002	-	-	-	-	-	-	-	0.2	-	-	-	-
0.0001	-	-	-	-	-	-	0.20	0.3	-	1.0	1.0	-
(1)	-	Cu + sum of named elements, 99.9 min.	Cu + sum of named elements, 99.5 min.	Mg, 0.03-0.06; Cu + sum of named elements, 99.5 min.	Cu + sum of named elements, 99.7 min.	Pb, 0.05; Cu + sum of named elements, 99.5 min.	P, 0.015; Pb, 0.01; Cu + sum of named elements, 99.5 min.	Cu + sum of named elements, 99.5 min.	Pb, 0.02; Cu + sum of named elements, 99.5 min.; Fe<=Ni	Pb, 0.05; Cu + sum of named elements, 99.5 min., (1)	Pb, 0.05; Cu + sum of named elements, 99.5 min., (1)	Cu + sum of named elements, 99.75 min.; (1)
UNS C10100	UNS C11000	UNS C15000	UNS C18000	UNS C18100	UNS C18150	UNS C18200	UNS C61400	UNS C63000	UNS C63200	UNS C70600	UNS C71500	UNS C72420

Cu (incl Ag)

Ni (incl Co)

Other

Source

(1) See specification for additional residual element requirements

(2) remainder

Common Aluminum Composition

Maximum weight % unless a range or minimum is shown.

Al	Si	Fe	Cu	Mn	Mg	Cr	Ni	Zn	Zr	Ti	Other Elements		Source
Al	Si	Fe	Cu	Mn	Mg	Cr	Ni	Zn	Zr	Ti	Each	Total	Source
99.00 min	0.95 (Si + Fe)	-	0.05-0.20	0.05	-	-	-	0.10	-	-	0.05	0.15	ASTM B247-02a
rem (1)	0.50-1.2	0.7	3.9-5.0	0.40-1.2	0.20-0.8	0.10	-	0.25	-	0.15	0.05	0.15	ASTM B247-02a
rem (1)	0.50	0.50	3.8-4.9	0.30-0.9	1.2-1.8	0.10	-	0.25	-	0.15	0.05	0.15	AMS 4120R
rem (1)	0.20	0.30	5.8-6.8	0.20-0.40	0.02	-	-	0.10	0.10-0.25	0.02-0.10	0.05 (2)	0.15 (2)	ASTM B247-02a
rem (1)	0.40	0.40	0.10	0.40-1.0	4.0-4.9	0.05-0.25	-	0.25	-	0.15	0.05	0.15	ASTM B247-02a
rem (1)	0.40-0.8	0.7	0.15-0.40	0.15	0.8-1.2	0.04-0.35	-	0.25	-	0.15	0.05	0.15	ASTM B247-02a
rem (1)	0.12	0.15	2.0-2.6	0.10	1.9-2.6	0.04	-	5.7-6.7	0.08-0.15	0.06	0.05	0.15	ASTM B247-02a
rem (1)	0.40	0.50	1.2-2.0	0.30	2.1-2.9	0.18-0.28	-	5.1-6.1	-	0.20	0.05	0.15	ASTM B247-02a
rem (1)	0.15	0.20	1.2-2.0	0.10	2.1-2.9	0.18-0.28	-	5.1-6.1	-	0.10	0.05	0.15	ASTM B247-02a

1100

2014

2024

2219

5083

6061

7050

7075

7175

(1) remainder

(2) Vanadium, 0.05 - 0.15

Scot Forge Difference

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Hardness Conversion & Alloy Charts

Approximate hardness conversion for non-austenitic steels.*

Download Hardness Conversion Chart

Common Carbon Steel Composition

Common Alloy Steel Composition

Common Tool Steel Composition

Common Stainless Steel Composition

Common Nickel Alloy Composition

Common Copper Alloy Composition

Common Aluminum Composition

Scot Forge Difference

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