ASTM 304 304L 304N, UNS S30400 S30403 S30451 Stainless Steel Pipe/Tube

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Differences between 304, 304L, 304H, 304N and 304LN stainless steel

304: This is the basic 304 stainless steel grade, also known as 18-8 stainless steel. It contains approximately 18% chromium and 8% nickel and has good corrosion resistance and mechanical properties. Suitable for a wide range of applications such as construction, manufacturing, food processing, etc.
304L: This is a low-carbon version of 304 stainless steel with a lower carbon content, generally less than 0.03%. This grade has good corrosion resistance and is especially suitable for applications in corrosive environments, such as chemical industry, marine engineering, etc.
304H: This is a high-carbon version of 304 stainless steel, with a carbon content typically between 0.04% and 0.1%. This grade has good heat resistance in high-temperature environments and is suitable for high-temperature equipment manufacturing, such as petroleum refining, stove manufacturing, etc.
304N: This is nitrogen-containing stainless steel that improves strength and corrosion resistance by adding nitrogen. It has high strength and toughness and is suitable for applications with special requirements, such as high-pressure vessels, chemical equipment, etc.
304LN: This is a low-carbon, low-nitrogen version of 304 stainless steel with good corrosion resistance and resistance to stress corrosion cracking. It is often used in applications in corrosive environments such as the chemical industry and marine engineering.

Specifications of Stainless Steel Tube

Product name	Stainless Steel Pipe
Grade	304, 304L, 304H, 304N1, 304N2, 304LN
Standard	ASTM A249, ASTM A269,ASTM A213 ASTM A312, ASTM A268, ASTM A270, ASTM A554, ASTM 632, ASTM 688 etc
Length	Customizable
Outside Diameter	Within 700mm
Thickness	Customizable
Surface	Mirror/2B/Polished or Customized
Package	clients' requirements and Standard export sea-worthy packing
Delivery time	5-15 days subject to the client's requirement and quantity

Equivalent grades

UNS	ASTM	JIS	DIN	EN	NF	BS
S30400	304	SUS304	-	1.4301	-	-
S30403	304L	SUS304L	-	1.4306	-	-
S30451	304N	SUS304N1	-	1.4315	-	-
S30452	XM21	SUS304N2	X5CrNiNb18 • 9	-	-	-
S30453	304LN	SUS304LN	X2CrNiN18 • 10	-	Z2CN18 •10(Az)	304S62

Chemical Properties:

Grade		Chemical Component %
Grade		C	Cr	Ni	Mn	P	S	Mo	Si	Cu	N	Other
304	0Cr18Ni9	≤0.07	17.00-19.00	8.00-10.00	≤2.00	≤0.035	≤0.030	-	≤1.00	-	-	-
304L	00Cr19Ni10	≤0.030	18.00-20.00	8.00-10.00	≤2.00	≤0.035	≤0.030	-	≤1.00	-	-	-
304H	*	0.040-0.1	18.00-20.00	8.00-10.00	≤2.00	≤0.035	≤0.030	-	≤1.00	-	-	-
304N1	0Cr19Ni9N	≤0.08	18.00-20.00	7.00-10.50	≤2.00	≤0.035	≤0.030	-	≤1.00	-	0.10-0.25	-
304N2	0Cr18Ni10NbN	≤0.08	18.00-20.00	7.50-10.50	≤2.00	≤0.035	≤0.030	-	≤1.00	-	0.15-0.30	Nb≤0.15
304LN	00Cr18Ni10N	≤0.030	17.00-19.00	8.50-11.50	≤2.00	≤0.035	≤0.030	-	≤1.00	-	0.12-0.22	-

Mechanical Properties

Grade	YS(Mpa) ≥	TS (Mpa) ≥	El (%) ≥	Hardness(HV) ≤
304	200	520	50	165-175
304L	175	480	50	180

Stainless Steel Grade List In Different Countries

No	China	Japan	America		Korea	EU	India	Australia	Taiwan
No	GB	JIS	ASTM	UNS	KS	BS EN	IS	AS	CNS
1	12Cr17Mn6Ni5N	SUS201	201	S20100	STS201	1.4372	10Cr17Mn6Ni4N20	201-2	201
2	12Cr18Mn9Ni5N	SUS202	202	S20200	STS202	1.4373		–	202
3	12Cr17Ni7	SUS301	301	S30100	STS301	1.4319	10Cr17Ni7	301	301
4		SUS302	302	S30200	STS302	1.43	–	–	302
5		SUS303	303	S30300	STS303	1.4305	–	–	–
6	06Cr19Ni10	SUS304	304	S30400	STS304	1.4301	07Cr18Ni9	304	304
7		SUS304S	304S	S31008		1.4845		304S	304S
8	022Cr19Ni10	SUS304L	304L	S30403	STS304L	1.4306	02Cr18Ni11	304L	304L
9	06Cr19Ni10N	SUS304N1	304N	S30451	STS304N1	1.4315	–	304N1	304N1
10	06Cr19Ni9NbN	SUS304N2	XM21	S30452	STS304N2	–	–	304N2	304N2
11	022Cr19Ni10N	SUS304LN	304LN	S30453	STS304LN	–	–	304LN	304LN
12	10Cr18Ni12	SUS305	305	S30500	STS305	1.4303	–	305	305
13		SUS308	308	S30800			–
14	06Cr23Ni13	SUS309S	309S	S30908	STS309S	1.4833	–	309S	309S
15		SUS309	309	S30900	STS309	1.4828	–	–	–
16		SUS310	310	S31000		1.4841	–	–
17	06Cr25Ni20	SUS310S	310S	S31008	STS310S	1.4845	–	310S	310S
18	06Cr17Ni12Mo2	SUS316	316	S31600	STS316	1.4401	04Cr17Ni12Mo2	316	316
19	06Cr17Ni12Mo2Ti	SUS316Ti	316Ti	S31635	–	1.4571	04Cr17Ni12MoTi20	316Ti	316Ti
20	022Cr17Ni12Mo2	SUS316L	316L	S31603	STS316L	1.4404	~02Cr17Ni12Mo2	316L	316L
21	06Cr17Ni12Mo2N	SUS316N	316N	S31651	STS316N	–	–	316N	316N
22	022Cr17Ni13Mo2N	SUS316LN	316LN	S31653	STS316LN	1.4429	–	316LN	316LN
23	06Cr18Ni12Mo2Cu2	SUS316J1	–	–	STS316J1	–	–	316J1	316J1
24	022Cr18Ni14Mo2Cu2	SUS316J1L	–	–	STS316J1L	–	–	–	316J1L
25	06Cr19Ni13Mo3	SUS317	317	S31700	STS317	–	–	317	317
26	022Cr19Ni13Mo3	SUS317L	317L	S31703	STS317L	1.4438	–	317L	317L
27		SUS321H	321H
28	06Cr18Ni11Ti	SUS321	321	S32100	STS321	1.4541	04Cr18Ni10Ti20	321	321
29		SUS303Se	303Se	S30323	STS303Se	–	–	–	–
30	06Cr18Ni11Nb	SUS347	347	S34700	STS347	1.455	04Cr18Ni10Nb40	347	347
31	–	DP11	SAF2304	S32304	–	1.4362	–	–	–
32	–	DP1	–	S31500	–	1.4417	–	–	–
33	–	DP8	SAF2205	S31803	–	1.4462	–	–	–
34	–	329J2l		S631260	–	1.4501	–	–	–
35	–	UR47N+	SAP2507	S32750	–	1.441	–	–	–
36	–	UR52N+	SAP2507	S32550	–	1.4507	–	–	–
37	–	SUS329J1	329	S32900	STS329J1	1.4477	–	329J1	329J1
38	022Cr19Ni5Mo3Si2N	SUS329J3L	–	S31803	STS329J3L	1.4462	–	329J3L	329J3L
39	06Crl3Al	SUS405	405	S40500	STS405	1.4002	04Cr13	405	405
40	022Cr11Ti	SUH409	409	S40900	STS409	1.4512	–	409L	409L
41	–	SUS410L	410L	–	STS410L	–	–	–	–
42	–	SUS447J1	447J1	–	–	–	–	–	–
43	–		XM27	–	–	–	–	–	–
44	–	SUS410S	410S	–	–	–	–	–	–
45	–		429	–	–	–	–	–	–
46	022Cr12	SUS410L	–	–	STS410L	–	–	410L	410L
47	10Cr17	SUS430	430	S43000	STS430	1.4016	05Cr17	430	430
48		SUS430F	430F	S43020	STS430F	1.4104	–	430F	430F
49			430L				–
50	10Cr17Mo	SUS434	434	S43400	STS434	1.4113	–	434	434
51		SUS436L	436L				–
52	022Cr18NbTi	–	–	S43940	–	1.4509	–	439	439
53	019Cr19Mo2NbTi	SUS444	444	S44400	STS444	1.4521	–	444	444
54	–	–	446	–	–	–	–	–	–
55	00Cr18Mo2Ti	–	–	–	–	–	–	–	–
56	00Cr17Ti	–	–	–	–	–	–	–	–
57	12Cr12	SUS403	403	S40300	STS403	–	–	403	403
58	12Cr13	SUS410	410	S41000	STS410	1.4006	12Cr13	410	410
59		SUS414	414
60		SUS416	416			1.4005
61	20Cr13	SUS420J1	420	S42000	STS420J1	1.4021	20Cr13	420	420J1
62	30Cr13	SUS420J2	–	–	STS420J2	1.4028	30 Cr13	420J2	420J2
63		SUS420F
64	68Cr17	SUS440A	440A	S44002	STS440A	–	–	440A	440A
65		SUS440B	440B
66		SUS440f	440f
67		SUS440C	440C
68	2Cr16Ni2	SUS431	431	S43100	–	1.4057	–	431	431
69		SUS410J1	410J1
70		SUS420J1	429J1
71		–	–	–	–	–	–	–	–