Chemical Composition

Grade AISI	Chemical Composition – Per cent									Nearest Equivalent Specification
Grade AISI	C Max	Mn Max	P Max	S Max	Si Max	Cr	Ni	Mo	Other Element	I.S.	En’
AUSTENITIC
201	0.15	5.5/7.5	0.06	0.03	1	16.0/18.0	3.5/5.5	-	-	-	-
202	0.15	7.5/10	0.06	0.03	1	17.0/19.0	4.0/06	-	-	-	-
301	0.15	2.0max	0.45	0.04	1	16.0/18.0	6.0/08	-	-	10Cr17Ni7	-
302	0.15	2	0.45	0.03	1	17.0/19.0	8.0/10.0	-	E-4-3-4%	07Cr18Ni9	En-58A
302HQ	0.03	2	0.45	0.03	1	17.0/19.0	9.0/10.0	-	CU:3-4.0	-	-
303	0.15	2	0.45	0.15min	1	17.0/19.0	8.0/10.0	-	E-4-1%max	15Cr18Ni9	En-58M
303EHS	0.15	2	0.02	0.3-0.33	1	17.0/19.0	8.0/10.0	-	CU:1%Max	-	-
304	0.08	2	0.045	0.03	1	18.0/20.00	8.0/10.0	-	-	04Cr18Ni10	En-58E
304L	0.03	2	0.045	0.03	1	18.0/20.00	8.0/10.0	-	-	02Cr18Ni11	-
304H.C	0.05	2	0.045	0.03	1	18.0/20.00	8.5/9.5	-	CU:2-2.50	-	-
308	0.02	2	0.04	0.03	1	18.0/20.00	10.0/12.0	-	-	-	-
308LER	0.03	1.5/2.0	0.025	0.02	0.5	19.0/21.0	9.5/11.0	-	-	-	-
309	0.08	2.0max	0.045	0.03	1	22.0/24.0	12.0/15.0	-	-	20Cr24Ni12	-
309LER	0.02	1.5/2.5	0.02	0.015	0.5	23.0/25.0	12.0/14.0	-	-	-	-
309S	0.2	2	0.045	0.03	1	22.0/24.0	12.0/15.0	-	-	-	-
310	0.03	2	0.045	0.03	1.5	24.0/26.0	19.0/22.0	-	-	10Cr25Ni12	-
310S	0.08	2	0.045	0.03	1.5	24.0/26.0	19.0/22.0	-	-	-	-
314	0.25	2	0.04	0.03	1.5to3	25.0/26.0	19.0/22.0	-	-	-	-
316	0.08	2	0.045	0.03	1	16.0/18.0	10.0/14.0	2.0/3.0	-	04Cr17Ni12Mo2	En 58H
316L	0.03	2	0.045	0.03	1	16.0/18.0	10.0/14.0	2.0/3.0	-	03Cr17Ni12Mo2	-
316LER	0.02	1.5/2.0	0.02	0.02	0.5	18.0/20.0	12.0/14.0	2.0/2.75	-	-	-
316LER	0.08	2	0.045	0.03	1	16.0/18.0	10.0/14.0	2.0/3.0	Ti5xCmin	-	-
317	0.08	2	0.045	0.03	1	18.0/20.0	11.0/15.0	3.0/40		-	-
317L	0.03	2	0.045	0.03	1	18.0/20.0	11.0/15.0	3.0/40	N:100/0.22	-	-
317LN	0.03	2	0.045	0.03	1	18.0/20.0	11.0/15.0	3.0/40	N:100/0.22	-	-
321	0.08	2	0.045	0.03	1	17.0/19.0	9.0/12.0	-	Ti5xCmin	04Cr18Ni10Ti20	En-58C
347	0.08	2	0.045	0.03	1	17.0/19.0	9.0/12.0	-	Nb/Ta10xCmin	04Cr18Ni10Nb-40	En-58G
904 L	0.02	2	0.045	0.035	1	19.0/23.0	23.0/28.0	40-50	CU1-12	-	-
FERRITIC
410	0.15	0.15	0.04	0.03	1	11.50/13.5	0.6	-	-	12Cr13	En-56A
416	0.15	0.15	0.06	0.15min	1	12.0/14.0	1.25/2.50	-	-	-	-
420	0.15min	0.15min	0.04	0.03	1	12.0/14.0	0.6	-	-	-	En-56C&D
430	0.12	0.12	0.04	0.03	1	16.0/18.0	0.6	-	-	07Cr17	En-60
430L	0.03	0.03	0.04	0.03	1	16.0/18.0	0.6	-	-	-	-
430F	0.12	0.12	0.06	0.15min	1	16.0/18.0	0.6	-	-	-	-
431	0.2	0.2	0.04	0.03	1	15.0/17.0	1.25/2.50	-	-	-	En-57
17.4-PH	0.07	0.07	0.04	0.03	1	15.0/17.0	3.0/5.0	-	NB:0.15/0.45	-	-
DUPLEX
1905	0.03	1.2/1.8	0.04	0.03	1.2/2	18.0/19.0	4.3/5.2	2.5/3	N:0.5/0.10	-	-
2205	0.03	2	0.03	0.02	1	21.0/23.0	4.5/6.5	2.5/3	N:0.8/0.20	-	-
2506	0.08	1	0.04	0.03	0.75	26.0/28.0	4/5	1.3/2	-	-	-

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