Stainless Steel Grades

1. Commly Application for stainless steel

Ferritic Stainless Steels:

Grade 409: Automotive exhaust systems and heat exchangers

Grade 416: Axles, shafts, and fasteners
Grade 430: Food industry and appliances
Grade 439: Automotive exhaust systems components

Austenitic Stainless Steels:
Grade 303: Fasteners, fittings, gears
Grade 304: General purpose austenitic stainless steel
Grade 304L: Grade 304 applications that require welding
Grade 309: Applications involving elevated temperatures
Grade 316: Chemical applications
Grade 316L: Grade 316 applications that require welding

Martensitic Stainless Steels:
Grade 410: Generable purpose martensitic stainless steel
Grade 440C: Bearings, knives, and other wear-resistant applications
Precipitation Hardened Stainless Steels:

17-4 PH: Aerospace, nuclear, and chemical applications
15-5 PH: Valves, fittings, and fasteners

2. Chemical composition for widely used Stainless Steel Grade

3. Equivalent Stainless Steel Grades per different Countries Standards

No	Chinese （GB）		Japan	USA		Korea	EU BS EN	India
	Old grade	New grade（07.10）	JIS	ASTM	UNS	KS		IS
Austenitic stainless steel
1	1Cr17Mn6Ni5N	12Cr17Mn6Ni5N	SUS201	201	S20100	STS201	1.4372	10Cr17Mn6Ni4N20
2	1Cr18Mn8Ni5N	12Cr18Mn9Ni5N	SUS202	202	S20200	STS202	1.4373
3	1Cr17Ni7	12Cr17Ni7	SUS301	301	S30100	STS301	1.4319	10Cr17Ni7
4	0Cr18Ni9	06Cr19Ni10	SUS304	304	S30400	STS304	1.4301	07Cr18Ni9
5	00Cr19Ni10	022Cr19Ni10	SUS304L	304L	S30403	STS304L	1.4306	02Cr18Ni11
6	0Cr19Ni9N	06Cr19Ni10N	SUS304N1	304N	S30451	STS304N1	1.4315	-
7	0Cr19Ni10NbN	06Cr19Ni9NbN	SUS304N2	XM21	S30452	STS304N2	-	-
8	00Cr18Ni10N	022Cr19Ni10N	SUS304LN	304LN	S30453	STS304LN	-	-
9	1Cr18Ni12	10Cr18Ni12	SUS305	305	S30500	STS305	1.4303	-
10	0Cr23Ni13	06Cr23Ni13	SUS309S	309S	S30908	STS309S	1.4833	-
11	0Cr25Ni20	06Cr25Ni20	SUS310S	310S	S31008	STS310S	1.4845	-
12	0Cr17Ni12Mo2	06Cr17Ni12Mo2	SUS316	316	S31600	STS316	1.4401	04Cr17Ni12Mo2
13	0Cr18Ni12Mo3Ti	06Cr17Ni12Mo2Ti	SUS316Ti	316Ti	S31635	-	1.4571	04Cr17Ni12MoTi20
14	00Cr17Ni14Mo2	022Cr17Ni12Mo2	SUS316L	316L	S31603	STS316L	1.4404	~02Cr17Ni12Mo2
15	0Cr17Ni12Mo2N	06Cr17Ni12Mo2N	SUS316N	316N	S31651	STS316N	-	-
16	00Cr17Ni13Mo2N	022Cr17Ni13Mo2N	SUS316LN	316LN	S31653	STS316LN	1.4429	-
17	0Cr18Ni12Mo2Cu2	06Cr18Ni12Mo2Cu2	SUS316J1	-	-	STS316J1	-	-
18	00Cr18Ni14Mo2Cu2	022Cr18Ni14Mo2Cu2	SUS316J1L	-	-	STS316J1L	-	-
19	0Cr19Ni13Mo3	06Cr19Ni13Mo3	SUS317	317	S31700	STS317	-	-
20	00Cr19Ni13Mo3	022Cr19Ni13Mo3	SUS317L	317L	S31703	STS317L	1.4438	-
21	0Cr18Ni10Ti	06Cr18Ni11Ti	SUS321	321	S32100	STS321	1.4541	04Cr18Ni10Ti20
22	0Cr18Ni11Nb	06Cr18Ni11Nb	SUS347	347	S34700	STS347	1.455	04Cr18Ni10Nb40