Technical information for Chicago Stainless

200 Series Alloy Definition

Stainless Steel Types
AISI Type (UNS)		Form (b)	Mechanical Properties of Anneated Material				Thermal Treatment		Commonly Used Specifications	Characteristics and Applications
Austenitc (c)	Typical Com Position % (a) Max.		Tensile Strength 1000 psi	Yeild Strength (0.2% Offset) 1000 psi	Elongation in 2 in., %	Hardness Temperature, F	Annealing Temperature, F	Stress Relief Annealing Temperature, F	Legend Mil-Military QQ-Federal AMS-ASTM-SAE
201LN (S20100)	16-18 Cr, 3.5-5.5 Ni, 0.15 C, 5.5-7.5 Mn, 1.0 Si, 0.060 P, 0.030 S, 0.25 N	Sheets Strips Tubing	115 115 115	55 55 55	55 55 55	Rb 900 Rb 90 Rb 90	1850-2050	---	ASTM-A412-A666	High work-hardening rate; low-nickel equivalent of Type 301.

300 Series Alloy Definition

Stainless Steel Types
AISI Type (UNS)		Form (b)	Mechanical Properties of Anneated Material				Thermal Treatment		Commonly Used Specifications	Characteristics and Applications
Austenitc (c)	Typical Com Position % (a) Max.		Tensile Strength 1000 psi	Yeild Strength (0.2% Offset) 1000 psi	Elongation in 2 in., %	Hardness Temperature, F	Annealing Temperature, F	Stress Relief Annealing Temperature, F	Legend Mil-Military QQ-Federal AMS-ASTM-SAE
301 (S30100)	16-18 Cr, 6-8 Ni, 0.15 C, 2.0 Min, 1.0 Si, 0.045 P, 0.030 S	Plates Sheets Straps Tubing	105 110 110 105	40 40 40 40	55 60 60 50	Bhn 165 Rb 85 Rb 85 Rb 95	1850-2050	400-750	Mil-S-5059 QQ-S-766 AMS-5517-5518-5519 ASTM-A167-A177-A666	High work-hardening rate; used for structural applications where high strength plus high ductility is required in railroad cars, trailer bodies, aircraft structurals.
304 (S30400)	18-20 Cr, 8-10.50 Ni, 0.08 C, 2.0 Min, 1.0 Si, 0.045 P, 0.030 S	Bars Plates Sheets Strips Tubing Wire	85 82 84 84 85 90	35 35 42 42 35 35	60 60 55 55 50 60	Bhn 149 Bhn 149 Rb 80 Rb 80 Rb 80 Rb 83	1850-2050	400-750	Mil-S-5059 QQ-S-766 AMS-5513 ASTM-A167-A240-A666	Low-carbon, modifications of Type 302 for restriction of carbide precipitation during welding. Used for chemical and food processing equipment, recording wire.
304L (S30403)	18-20 Cr, 8-12 Ni, 0.03 C, 2.0 Min, 1.0 Si, 0.045 P, 0.030 S	Plates Sheets Strips Tubing	79 81 81 78	33 39 39 34	60 55 55 55	Bhn 143 Rb 79 Rb 79 Rb 75	1850-2050	400-750	Mil-S-4043 QQ-S-766 ASM-5511 ASTM-A167-A240	Extra-low-carbon modification of Type 304 for further restriction of carbide precipitation during welding.
309 (S30900)	22-24 Cr, 12-15 Ni, 0.20 C, 2.0 Min, 1.0 Si, 0.045 P, 0.030 S	Bars Plates Sheets Strips Tubing Wire	95 95 90 90 90 105**	40 40 45 45 45 70**	45 45 45 45 45 35**	Rb 83 Bhn 170 Rb 85 Rb 85 Rb 85 Rb 98**	1900-2050	---	Mil-S-862 QQ-S-766 AMS-5523 ASTM-A-167-A240	Used for its high temperature strength and scale resistance in aircraft heaters, heat treating equipment, annealing covers, furnace parts.
316 (S30900)	16-18 Cr, 10-14 Ni, 0.08 C, 2.0 Min, 1.0 Si, 0.045 P, 0.030 S, 2-3 Mo	Bars Plates Sheets Strips Tubing Wire	80 82 84 84 85 80	30 36 42 42 35 30	60 55 50 50 50 60	RB 78 Bhn 149 Rb 79 Rb 79 Rb 85 Rb 78	1850-2050	400-750	Mil-S-5059 QQ-S-766 AMS-5513 ASTM-A167-A240-A666	Higher corrosion resistance than Types 302 and 304, high creep strength. Used for chemical and pulp handling equipment, photographic and food equipment.
316L (S30403)	16-18 Cr, 10-14 Ni, 0.03 C, 2.0 Min, 1.0 Si, 0.045 P, 0.030 S, 2-3 Mo	Plates Sheets Strips Tubing	81 81 81 80	34 42 42 35	55 50 50 55	Bhn 146 Rb 79 Rb 79 Rb 78	1850-2050	400-750	Mil-S-862-S-7720 QQ-S-766 ASM-5507 ASTM-A167-A240 et al	Extra-low-carbon modification of Type 316, for welded construction where intergranular carbide precipitation must be avoided.
317L (S31703)	18-20 Cr, 11-15 Ni, 0.03 C, 2.0 Mn, 1.0 Si, 0.045 P, 0.030 S, 3-4 Mo	Plates Sheets Tubing	85 86 86	35 38 50	55 55 55	Rb 80 Rb 85	1900-200	---	ASTM-F56-F139	Extra-low-carbon modifications of Type 317 for restriction of carbide precipitation during welding.
321 (S32100)	17-19 Cr, 9-12 Ni, 0.08 C, 2.0 Mn, 1.0 Si, 0.045 P, 0.030 S(Ti, 5xCmin.)	Bars Plates Sheets Strips Tubing Wire	85 85 90 90 85 95**	35 30 35 35 35 65**	55 55 45 45 50 40**	Bhn 150 Bhn 160 Rb 80 Rb 80 Rb 80 Rb 89**	1750-2050	400-750(e)	Mil-S-6721 QQ-S-682 ASTM-A167-A240	Stabilized for weldments subject to severe corrosive conditions and for service from 800 to 1600 degrees F. Used for aircraft exhaust manifolds, boiler shells, process equipment, expansion joints.

400 Series Alloy Definition

Stainless Steel Types
AISI Type (UNS)		Form (b)	Mechanical Properties of Anneated Material				Thermal Treatment		Commonly Used Specifications	Characteristics and Applications
Austenitc (c)	Typical Com Position % (a) Max.		Tensile Strength 1000 psi	Yeild Strength (0.2% Offset) 1000 psi	Elongation in 2 in., %	Hardness Temperature, F	Annealing Temperature, F	Stress Relief Annealing Temperature, F	Legend Mil-Military QQ-Federal AMS-ASTM-SAE
409 (S40900)	10.5-11.75 Cr, 0.08 C, 1.0 Mn, 1.0 Si, 0.045 P, 0.045 S, (Ti 6xC, but with 0.75 max.)	Bars Plates Sheets Strips	65 65 65 65	35 35 35 35	25 25 25 25	Rb 75 Rb 75 Rb 75 Rb 75	1625	---	ASTM-A176-A651 SAE 51409	General-purpose construction stainless primarily intended for automotive exhaust systems, structural and other applications.
430 (S43000)	16-18 Cr, 0.12 C, 1.0 Mn, 1.0 Si, 0.040 P, 0.030 S	Bars Plates Sheets Strips Tubing Wire	75 75 75 75 75 70	45 40 50 50 40 40	30 30 25 25 25 35	Bhn 155 Bhn 160 Rb 85 Rb 85 Rb 80 Rb 82	Low anneal 1400-1500	---	QQ-S-764 AMS-5503 ASTM-A176-A240	General-purpose non hardenable chromium type. Used for decorative trim, nitric acid tanks, annealing baskets.
434 (S43400)	16-18 Cr, 0.12 C, 1.0 Mn, 1.0 Si, 0.040 P, 0.030 S, 0.75-1.25 Mo	Sheets Strips Wire	77 77 79	53 53 60	23 23 33	Rb 83 Rb 83 Rb 90	1450-1550	---	ASTM-A6512 SAE-5144	Modification of Type 430 designed for use as automotive trim to resist atmospheric corrosion in the presence of winter road-conditioning and dust-laying compounds.
439 (S43600)	16-18 Cr, 0.12 C, 1.0 Mn, 1.0 Si, 0.040 P, 0.030 S, 0.75-1.25 Mo (Cb+Ta x c min., 0.70 Max.)	Sheets Strips	77 77	53 53	23 23	Rb 83 Rb 83	1450-1500	---	SAE-51436	Similar to type 434 for general corrosion -and heat- resistant applications.
410 (S41000)	11.5-13.5 Cr, 0.15 C, 1.0 Mn, 1.0 Si, 0.040 P, 0.030 S	Bars Plates Sheets Strips Tubing Wire	75 70 70 70 75 75	40 35 45 45 40 40	35 30 25 25 30 30	Rb 82 Bhn 150 Rb 80 Rb 80 Rb 82 Rb 82	1500-1650(g) 1200-1400(n)	H 1700-1850(d) T 400-1400(i)	QQ-S-766 AMS-5504 ASTM-A176-A240	General purpose heat treatable type, for machine parts, pump shafts.

Hardness Conversion Chart

Stainless Steel Hardness Conversion Chart
Rockwell										Vickers	Tukon Knoop	Shore	Brinell			Tensile Strength
C Brale 150 Kg	A Brale 90 Kg	K 1/8 Ball 150 Kg	E 1/8 Ball 100 Kg	F 1/16 Ball 60 Kg	G 1/16 Ball 150 Kg	B 1/16 Ball 100 Kg	45-T 1/16 Ball 45 Kg	30-T 1/16 Ball 30 Kg	15-T 1/16 Ball 15 Kg	10 Kg Diamond Pyramid	1000 Gr & Over Diamond	Sclaro- Scope Diamond	3000 Kg 10 MM Ball DIA.	BHN	500 Kg 10 MM Ball	Steel Only KPSI + C - > 2%
(19)	61	*****	*****	*****	79	98	70	81	92	234	245	34	4.05	223	*****	108
(18)	60	*****	*****	*****	78	97	69	81	92	230	239	33	4.10	217	*****	106
(17)	60	*****	*****	*****	78	97	69	81	92	226	235	33	4.10	217	*****	104
(16)	59	*****	*****	*****	76	96	68	80	92	222	232	32	4.15	212	*****	102
(15)	59	*****	*****	*****	74	95	67	79	92	217	226	32	4.20	207	*****	100
(14)	58	*****	*****	*****	73	94	66	79	91	213	220	31	4.25	201	*****	98
(13)	57	*****	*****	*****	71	93	66	78	91	207	216	30	4.30	197	*****	96
(12)	57	100	*****	*****	69	92	65	78	91	204	211	29	4.35	192	*****	94
(11)	57	100	*****	*****	69	92	65	78	91	200	209	29	4.35	192	*****	92
(10)	56	100	*****	*****	68	91	64	77	90	196	206	28	4.40	187	*****	90
(9)	56	100	*****	*****	68	91	64	77	90	192	203	28	4.45	183	*****	88
(8)	56	99	*****	*****	66	90	63	76	90	188	195	27	4.50	179	158	87
(7)	55	98	*****	*****	64	89	62	76	90	184	191	27	4.55	174	150	86
(6)	54	97	*****	*****	61	87	60	75	89	180	187	26	4.55	174	150	84
(5)	54	97	*****	*****	61	87	60	75	89	177	184	26	4.60	170	150	82
(4)	53	96	*****	*****	59	86	59	74	89	173	180	25	4.65	167	143	80
(3)	53	95	*****	*****	58	85	58	74	88	169	176	25	4.70	163	143	79
(2)	52	94	*****	*****	56	84	57	73	88	166	172	24	4.75	159	136	77
(1)	51	93	*****	*****	54	83	56	72	88	163	170	24	4.80	156	136	76
*****	51	92	*****	*****	53	82	55	72	87	160	166	24	4.80	156	136	75
*****	50	91	*****	*****	51	81	54	71	87	153	164	23	4.85	152	130	74
*****	50	91	*****	*****	49	80	53	70	86	150	162	23	4.90	149	130	72
*****	49	90	*****	*****	48	79	52	70	86	147	161	22	4.95	146	130	70
*****	49	89	*****	*****	46	78	51	69	86	144	158	22	5.00	143	124	69
*****	48	88	*****	*****	44	77	50	68	86	141	155	21	5.05	140	124	68
*****	47	87	*****	*****	43	76	49	68	85	139	152	21	5.05	140	124	67
*****	47	86	*****	100	41	75	49	67	85	137	150	20	5.10	137	119	66
*****	46	85	*****	99	39	74	48	66	85	135	147	20	5.15	134	119	65
*****	46	85	*****	99	38	73	47	66	85	132	145	20	5.20	131	114	63
*****	45	84	*****	98	36	72	46	65	84	130	143	19	5.20	131	114	62
*****	45	83	100	98	35	71	45	64	84	127	141	19	5.25	128	114	61
*****	44	82	100	97	33	70	44	64	84	125	139	19	5.30	126	109	60
*****	44	81	99	96	31	69	43	63	83	123	137	18	5.35	123	109	59
*****	43	80	98	96	30	68	42	62	83	121	135	18	5.40	121	109	58
*****	43	70	98	95	28	67	41	62	83	119	133	17	5.45	118	104	57
*****	42	78	97	95	27	66	40	61	82	117	131	16	5.50	116	104	58
*****	42	78	96	94	25	65	39	60	82	116	129	15	5.50	116	104	56
*****	42	77	96	94	24	64	38	60	82	114	127	*****	5.55	114	100	*****
*****	41	76	95	93	22	63	37	59	81	112	125	*****	5.60	111	100	*****
*****	41	75	95	92	21	62	36	58	81	110	124	*****	5.65	109	100	*****
*****	40	74	94	92	19	61	35	57	81	108	122	*****	5.65	109	96	*****
*****	40	73	93	91	18	60	34	57	80	107	120	*****	5.70	107	96	*****
*****	39	72	93	91	16	59	32	56	80	106	118	*****	5.75	105	93	*****
*****	39	71	92	90	15	58	31	55	80	104	117	*****	5.80	103	93	*****

Gauge Chart

Gauges of Stainless Steel
Gauge Number	Inches	Thickness Ordering Limits	Chromium (400 Series)	Chrome/Nickel (200 & 300 Series)
7	.184	.191 - .177	7.0813	7.2187
8	.1657	.1727 - .1587	6.4375	6.5625
10	.135	.142 - 128	5.7937	5.9062
11	.120	.128 - .114	5.1500	5.2500
12	.105	.110 - .100	4.5063	4.5937
13	.098	.093 - .086	3.8625	3.9375
14	.075	.078 - .070	3.2187	3.2812
16	.059	.062 - .056	2.5750	2.6250
18	.0482	.051 - .0452	2.0600	2.1000
19	.0438	.0460 - .0401	1.8025	1.8375
20	.035	.038 - .033	1.5450	1.5750
22	.0291	.0311 - .0271	1.2875	1.3125
24	.024	.026 - .022	1.0300	1.0500
26	.018	.0195 - .0165	.7725	.7875
28	.016	.0175 - .0145	.6438	.6562
29	.0141	.0145 - .0131	.5794	.5906
30	.0125	.0130 - .0115	.5150	.5250
31	.0109	.0114 - .0100	.4506	.4594

Chicago Stainless, Inc.
is a distributor of stainless steel coil, sheet, strip and plate

Technical Information

200 Series Alloy Definition

300 Series Alloy Definition

400 Series Alloy Definition

Hardness Conversion Chart

Gauge Chart

Chicago Stainless, Inc. is a distributor of stainless steel coil, sheet, strip and plate

Technical Information

200 Series Alloy Definition

300 Series Alloy Definition

400 Series Alloy Definition

Hardness Conversion Chart

Gauge Chart

Chicago Stainless, Inc.
is a distributor of stainless steel coil, sheet, strip and plate