Stainless Steel 904L Seamless Tubes Supplier USA

USA Piping Solution is a specialist supplier and manufacturer of Stainless Steel 904L Seamless Tubes designed for high-performance industrial application in USA as well as worldwide market. SS 904L Seamless Tubes (UNS N08904 / W.Nr. 1.4539 / ASTM B677 / ASME SB677) are seamless tubes that are produced without a weld seam and are ideally suited for critical service in aggressive chemical and process environments. The seamless process assures smooth manufacturing without any seam metallurgical discontinuities, which means uniform corrosion resistance and mechanical properties all the way around the circumference of the tube. This is particularly significant in high pressure, high temperature service and in aggressive corrosive media where pitting or crevice corrosion may occur at the weld zone and cause failure. Manufactured to ASTM B677 / ASME SB677 and related spec's, all products are supplied with full EN 10204 3.1 Mill Test Report.

ASTM B677 SS 904L Seamless Tube Specifications

Parameter	Details
Grade	SS 904L Seamless Tubes, UNS N08904, W.Nr. 1.4539, ASTM B677 TP904L
Primary Standard	ASTM B677 / ASME SB677 (Seamless and Welded 904L Tubes)
Additional Standards	ASTM A213 TP904L, ASTM A269 TP904L, ASTM A511 TP904L, ASTM A632 TP904L
OD Range	1/8 in (3.18 mm) to 16 in (406 mm); custom available
Schedules	SCH5, SCH10, SCH20, SCH40, STD, SCH80, XS, SCH120, SCH160, XXS
Delivery Condition	Solution Annealed and Pickled; Bright Annealed on request
End Finish	Plain End (PE), Beveled End (BE)
Certification	EN 10204 3.1 / 3.2; SGS, TUV, DNV, ABS, LLOYDS available

SS 904L Seamless Tube Temperature Range

Temperature, deg C	J/(kg deg C)	Temperature, deg F	Btu/(lb deg F)
20	460	68	0.11
100	485	200	0.12
200	515	400	0.12
300	545	600	0.13
400	570	800	0.14
500	590	1000	0.14
600	605	1200	0.15
700	615	1300	0.15

904L SS Pipe Schedule and Wall Thickness

Nominal	O.D. Inches	10s	10	40s & Std	40	80s & E.H.	80	160
1/8	.405	.049	.049	.068	.068	.095	.095
1/4	.540	.065	.065	.088	.088	.119	.119
3/8	.675	.065	.065	.091	.091	.126	.126
1/2	.840	.083	.083	.109	.109	.147	.147	.187
3/4	1.050	.083	.083	.113	.113	.154	.154	.218
1	1.315	.109	.109	.133	.133	.179	.179	.250
1 1/4	1.660	.109	.109	.140	.140	.191	.191	.250
1 1/2	1.900	.109	.109	.145	.145	.200	.200	.281
2	2.375	.109	.109	.154	.154	.218	.218	.343
2 1/2	2.875	.120	.120	.203	.203	.276	.276	.375
3	3.500	.120	.120	.216	.216	.300	.300	.437
3 1/2	4.000	.120	.120	.226	.226	.318	.318
4	4.500	.120	.120	.237	.237	.337	.337	.531
4 1/2	5.000			.247		.355
5	5.563	.134	.134	.258	.258	.375	.375	.625
6	6.625	.134	.134	.280	.280	.432	.432	.718
7	7.625			.301		.500
8	8.625	.148	.148	.322	.322	.500	.500	.906
9	9.625			.342		.500
10	10.750	.165	.165	.365	.365	.500	.593	1.125
11	11.750			.375		.500
12	12.750	.180	.180	.375	.406	.500	.687	1.312
14	14.000	.188	.250	.375	.437	.500	.750	1.406
16	16.000	.188	.250	.375	.500	.500	.843	1.593
18	18.000	.188	.250	.375	.562	.500	.937	1.781

SS 904L Seamless Tube Weight Chart

NPS	Outside Diameter (OD)		Wall Thickness (WT)		Sched	Weight
NPS	in	mm	in	mm	Sched	kg/Mtr	Lb/ft
1/2"	0.840	21	0.109	2.769	40 STD	1.268	0.851
1/2"	0.840	21	0.147	3.734	80 STD	1.621	1.088
3/4"	1.050	27	0.113	2.870	40 STD	1.684	1.131
3/4"	1.050	27	0.154	3.912	80 STD	2.195	1.474
1"	1.315	33	0.133	3.378	40 STD	2.501	1.679
1"	1.315	33	0.179	4.547	80 STD	3.325	2.172
1 1/4"	1.660	42	0.140	3.556	40 STD	3.385	2.273
1 1/4"	1.660	42	0.191	4.851	80 STD	4.464	2.997
1 1/2"	1.900	48	0.145	3.683	40 STD	4.048	2.718
1 1/2"	1.900	48	0.200	5.080	80 STD	5.409	3.361
2"	2.375	60	0.154	3.912	40 STD	5.441	3.653
2"	2.375	60	0.218	5.537	80 STD	7.480	5.022
2 1/2"	2.875	73	0.203	5.516	40 STD	8.629	5.793
2 1/2"	2.875	73	0.276	7.010	80 STD	11.411	7.661
3"	3.500	89	0.216	5.486	40 STD	11.284	7.576
3"	3.500	89	0.300	7.620	80 STD	15.272	10.253
4"	4.500	114	0.237	6.020		16.073	10.790
4"	4.500	114	0.337	8.560		22.318	14.983
6"	6.625	168	0.188	4.775		19.252	12.924
6"	6.625	168	0.203	5.516		20.739	13.923
6"	6.625	168	0.219	5.563		22.318	14.983
6"	6.625	168	0.250	6.350		25.354	17.021
6"	6.625	168	0.280	7.112	40 STD	58.263	18.974
6"	6.625	168	0.312	7.925		31.334	21.036
6"	6.625	168	0.375	9.525		37.285	25.031
6"	6.625	168	0.432	10.973	80 XHY	42.561	28.573
6"	6.625	168	0.500	12.700		48.719	32.708
8"	8.625	219	0.188	4.775		25.233	16.940
8"	8.625	219	0.203	5.156		27.198	18.259
8"	8.625	219	0.219	5.563		29.286	19.661
8"	8.625	219	0.250	6.350	20	33.308	22.361
8"	8.625	219	0.277	7.036	30	36.786	24.696
8"	8.625	219	0.322	8.179	40	42.352	28.554
8"	8.625	219	0.375	9.525		49.216	33.041
8"	8.625	219	0.406	10.312	60	53.085	35.638
8"	8.625	219	0.500	12.700	80 XHY	64.627	43.388
10"	10.750	273	0.188	4.775		31.588	21.207
10"	10.750	273	0.219	5.563		36.689	24.631
10"	10.750	273	0.250	6.350	20	41.759	28.035
10"	10.750	273	0.307	7.798	30	51.002	34.240
10"	10.750	273	0.344	8.738		56.946	38.231
10"	10.750	273	0.365	9.271	40 STD	63.301	40.483
10"	10.750	273	0.438	11.125		71.852	48.238
10"	10.750	273	0.500	12.700	60 XHY	81.530	54.735
10"	10.750	273	0.594	15.088	80	95.969	64.429
12"	12.750	324	0.188	4.775		37.570	25.222
12"	12.750	324	0.219	5.563		43.657	29.309
12"	12.750	324	0.250	6.350		49.713	33.375
12"	12.750	324	0.281	7.137		55.739	37.420
12"	12.750	324	0.312	7.925		61.735	41.445
12"	12.750	324	0.375	9.525		73.824	49.562
12"	12.750	324	0.406	10.312		79.727	53.525
12"	12.750	324	0.500	12.700		97.438	65.415
12"	12.750	324	0.562	14.275		108.966	73.154
14"	14.000	356	0.188	4.775		41.308	27.732
14"	14.000	356	0.219	5.563		48.012	32.233
14"	14.000	356	0.250	6.350	20	54.685	36.713
14"	14.000	356	0.281	7.137		61.327	41.172
14"	14.000	356	0.312	7.925		67.939	45.611
14"	14.000	356	0.375	9.525	STD	81.281	54.568
14"	14.000	356	0.438	11.125	40	94.498	63.441
14"	14.000	356	0.500	12.700	XHY	107.381	72.090
14"	14.000	356	0.625	15.875		132.983	89.278
16”	16.000	406	0.188	4.775		47.290	21.748
16”	16.000	406	0.219	5.563		54.980	36.910
16”	16.000	406	0.250	6.350	10	62.639	42.053
16”	16.000	406	0.281	7.137		70.268	47.174
16”	16.000	406	0.312	7.925	20	77.866	52.275
16”	16.000	406	0.344	8.738		85.677	57.519
16”	16.000	406	0.375	9.525	30 STD	93.213	62.578
16”	16.000	406	0.438	11.125		108.433	72.797
16”	16.000	406	0.500	12.700	40 XHY	123.289	82.770
18"	18.000	457	0.219	5.563		61.948	41.588
18"	18.000	457	0.250	6.350		70.593	47.393
18"	18.000	457	0.281	7.137		79.208	53.176
18"	18.000	457	0.312	7.925	20	87.792	58.939
18"	18.000	457	0.375	9.525	STD	105.144	70.588
18"	18.000	457	0.438	11.125	30	122.369	82.152
18"	18.000	457	0.500	12.700	XHY	139.198	93.450
18"	18.000	457	0.562	14.275	40	155.904	104.666
18"	18.000	457	0.625	15.875		172.754	115.978
20"	20.000	508	0.250	6.350		78.547	52.733
20"	20.000	508	0.282	7.163		88.458	59.386
20"	20.000	508	0.312	7.925		97.719	65.604
20"	20.000	508	0.375	9.525	20 STD	117.075	78.598
20"	20.000	508	0.438	11.125		136.305	91.508
20"	20.000	508	0.500	12.700	30 XHY	155.106	104.130
20"	20.000	508	0.594	15.088	40	183.378	123.110
20"	20.000	508	0.625	15.875		192.640	129.328
20"	20.000	508	0.688	17.475		211.368	141.901
24"	24.000	610	0.250	6.350		94.456	63.413
24"	24.000	610	0.281	7.137		106.029	71.183
24"	24.000	610	0.312	7.925		117.573	18.932
24"	24.000	610	0.375	9.525	20 STD	140.938	64.618
24"	24.000	610	0.438	11.125		164.176	110.219
24"	24.000	610	0.500	12.700	XHY	186.923	125.490
24"	24.000	610	0.625	15.875		232.410	156.028
24"	24.000	610	0.688	17.475	40	255.148	171.293
24"	24.000	610	0.750	19.050		277.401	186.233
30"	30.000	762	0.250	6.350		118.318	79.433
30"	30.000	762	0.281	7.137		132.851	89.189
30"	30.000	762	0.312	7.925	10	147.353	98.925
30"	30.000	762	0.375	9.525	STD	176.731	118.648
30"	30.000	762	0.438	11.125		205.983	138.286
30"	30.000	762	0.500	12.700	20 XHY	234.647	157.530
30"	30.000	762	0.625	15.875	30	292.066	196.078
30"	30.000	762	0.688	17.475		320.817	215.380
30"	30.000	762	0.750	19.050		348.988	234.293
36"	36.000	914	0.250	6.350		142.180	95.453
36"	36.000	914	0.281	7.137		159.672	107.196
36"	36.000	914	0.312	7.925	10	177.133	118.918
36"	36.000	914	0.375	9.525	STD	215.525	142.678
36"	36.000	914	0.438	11.125		247.790	166.353
36"	36.000	914	0.500	12.700	20 XHY	282.372	198.570
36"	36.000	914	0.625	15.875		351.723	236.128
36"	36.000	914	0.688	17.475		386.487	259.467
36"	36.000	914	0.750	19.050		420.576	282.353
42"	42.000	1067	0.312	7.925		206.914	138.911
42"	42.000	1067	0.375	9.525	STD	248.319	166.708
42"	42.000	1067	0.500	12.700	XHY	33.097	221.610
42"	42.000	1067	0.750	19.050		492.163	330.413
48"	48.000	1219	0.375	9.525	STD	284.112	190.738
48"	48.000	1219	0.438	11.125		331.404	222.487
48"	48.000	1219	0.500	12.700	XHY	377.822	253.650
48"	48.000	1219	0.750	19.050		563.750	378.473
48"	48.000	1219	0.875	22.225		655.969	440.383

904L Stainless Steel Seamless Tubes Pressure Rating

Temperature		Comparison to other High Temperature Pipe
deg F	deg C	Alloy 254	UNS C69100 Temper TF00	Type 904L	Alloy 825
200	93	0.88	1.00	0.82	1.00
300	149	0.79	1.00	0.74	0.95
400	204	0.73	0.96	0.68	0.90
500	260	0.69		0.63	0.87
600	315	0.66		0.58	0.84
700	371	0.64		0.56	0.81
800	426				0.79

Chemical Composition

Element	C	Cr	Ni	Mo	Cu	Mn	Si	P	S
SS 904L	max 0.02	19-23	23-28	4-5	1-2	max 2.0	max 1.0	max 0.045	max 0.035

Mechanical Properties

Property	Min Value
Tensile Strength	490 MPa (71 ksi)
Yield Strength 0.2% proof	220 MPa (32 ksi)
Elongation in 50 mm	36%
Brinell Hardness (HB)	150 max typical
Density	8000 kg/m3

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Why Seamless for SS 904L Applications?

When SS 904L is specified for service in sulfuric acid, mixed acid, or chloride-laden environments, the seamless form offers critical advantages. The absence of a weld seam means there are no zones of altered microstructure or residual stress that could become preferential corrosion initiation sites. For high-pressure process lines, instrumentation tubing, and critical heat exchanger bundles in chemical plants, 904L Seamless Tubes are consistently the preference of process engineers over their welded counterparts.

Applications of SS 904L Seamless Tubes

Sulfuric acid plants: absorber and heat exchanger tubing
Phosphoric acid and fertilizer production systems
Seawater desalination multi-effect evaporator tubes
Oil and gas: subsea umbilical and sour service
Pharmaceutical high-purity fluid transfer lines
Pulp and paper: bleaching and chemical recovery tubing
Nuclear and power plant heat exchangers

Frequently Asked Questions (FAQs)

Q1: For a sulfuric acid absorber heat exchanger operating at 93% H2SO4 concentration and 100 degrees C, is SS 904L seamless tubing suitable or do we need a higher alloy?

A: At 93% H2SO4 above 80 C, SS 904L approaches its corrosion resistance limit. In this service, Alloy C-276 or Saramet 23 are more reliable. For 60 to 80% H2SO4 at 100 C, 904L seamless performs well. We strongly recommend consulting our technical team with your exact process data.

Q2: We need SS 904L seamless tubes with IGC (intergranular corrosion) test certification per ASTM A262 Practice E for our chemical plant quality specification. Can you supply?

A: Yes. SS 904L seamless tubes with ASTM A262 Practice E IGC test certification are available. The low carbon content (max 0.02%) of 904L ensures excellent IGC resistance. Test certificates from NABL-accredited labs are provided alongside EN 10204 3.1 MTRs.

Q3: We are purchasing small-diameter SS 904L seamless tubes for instrument tubing runs in an offshore sour gas platform. What maximum working pressure can we expect for 1/2 inch OD x 0.065 inch wall?

A: For 1/2 inch OD x 0.065 inch wall SS 904L seamless tube at ambient temperature, maximum allowable working pressure per ASME B31.3 is approximately 4800 psi. Exact figures depend on your design temperature and allowable stress. We can provide pressure-temperature rating tables.

Q4: Can SS 904L seamless tubes be cold bent for instrument tubing routes without annealing between bends? Our site team is asking about bend radius limitations.

A: Yes. SS 904L seamless tubes with wall thickness up to 0.083 inch can typically be cold bent to a 3D bend radius without intermediate annealing, due to their high elongation (36% min). For tighter radii or thicker walls, intermediate annealing is recommended to restore ductility.

Q5: Our EPC contractor requires SS 904L seamless tubes under ASME Section II Part B SA-B677 with Manufacturer Data Reports (MDR). Can you supply through a third-party ASME-stamped facility?

A: Yes. We can supply SS 904L seamless tubes under ASME SB677 with Manufacturer Data Reports through our ASME-qualified mill network. ASME Section II compliance with U-stamp processing and MDRs is available. Provide your code specification and we will confirm lead time and pricing.

Related Products

SS 904L Seamless Tubes for Critical Acid & Sour Service Applications

ASTM B677, A213, A269 seamless tubes with IGC test, NACE MR0175, and ASME MDR options. Cold bendable, pharmaceutical-grade electropolish available. Request your quote today.

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Stainless Steel 904L Seamless Tubes Supplier in USA

ASTM B677 SS 904L Seamless Tube Specifications

SS 904L Seamless Tube Temperature Range

904L SS Pipe Schedule and Wall Thickness

SS 904L Seamless Tube Weight Chart

904L Stainless Steel Seamless Tubes Pressure Rating

Chemical Composition

Mechanical Properties

Types of SS 904L Seamless Tubes

Why Seamless for SS 904L Applications?

Applications of SS 904L Seamless Tubes

Frequently Asked Questions (FAQs)

Related Products

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