ASTM A333 Grade 6 Carbon steel Seamless And Welded Pipes

ASTM A333

Standard Overview:
ASTM A333 specifies the requirements for seamless and welded steel pipes for use in cryogenic environments.

Main Material:
It covers a variety of low-temperature grades of carbon steel and alloy steel, the most common of which are Grade 1, Grade 6, Grade 8, etc.

Scope of Application:
ASTM A333 steel pipes are mainly used in pipeline systems that need to work in cryogenic environments. They are widely used in pipeline systems that transport cryogenic fluids such as liquefied natural gas (LNG), ethylene, and liquid carbon dioxide.

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Our ASTM A333 Pipe Supply Range

Standard	ASTM A333
Manufacturing Processed	Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature
Steel Grade	Grade 1,3,4,6,7,8,9,10,11
Our Diameter	21.3mm-914.4mm
Length	Single Random Length, Double Random Length, 20 ft, 40 ft
Corrosion prevention	3PE/3LPE, FBE, Galvanized, Varnished
WT Schedules	SCH 10, SCH 20, SCH 40, SCH STD, SCH 80, SCH XS to SCH 160, SCH XXS
ENDS	Plain End,Beveled End,Thread

Dimension of ASTM A333

Steel Pipe Dimensions Chart ANSI B36. 10 & 36.19
Nominal Pipe Size		Outside Diameter (mm)	Nominal Wall Thickness Schedule
NPS	DN	OD	SCH 10	SCH 20	SCH 30	SCH STD	SCH 40	SCH 60	SCH XS	SCH 80	SCH 100	SCH 120	SCH 140	SCH 160	SCH XXS
1/8	6	10.3	1.24	–	1.45	1.73	1.73	–	2.41	2.41	–	–	–	–	–
1/4	8	13.7	1.65	–	1.85	2.24	2.24	–	3.02	3.02	–	–	–	–	–
3/8	10	17.1	1.65	–	1.85	2.31	2.31	–	3.20	3.20	–	–	–	–	–
1/2	15	21.3	2.11	–	2.41	2.77	2.77	–	3.73	3.73	–	–	–	4.78	7.47
3/4	20	26.7	2.11	–	2.41	2.87	2.87	–	3.91	3.91	–	–	–	5.56	7.82
1	25	33.4	2.77	–	2.9	3.38	3.38	–	4.55	4.55	–	–	–	6.35	9.09
1 1/4	32	42.2	2.77	–	2.97	3.56	3.56	–	4.85	4.85	–	–	–	6.35	9.70
1 1/2	40	48.3	2.77	–	3.18	3.68	3.68	–	5.08	5.08	–	–	–	7.14	10.15
2	50	60.3	2.77	–	3.18	3.91	3.91	–	5.54	5.54	–	–	–	8.74	11.07
2 1/2	65	73	3.05	–	4.78	5.16	5.16	–	7.01	7.01	–	–	–	9.53	14.02
3	80	88.9	3.05	–	4.78	5.49	5.49	–	7.62	7.62	–	–	–	11.13	15.24
3 1/2	90	101.6	3.05	–	4.78	5.74	5.74	–	8.08	8.08	–	–	–	–	–
4	100	114.3	3.05	–	4.78	6.02	6.02	–	8.56	8.56	–	11.13	–	13.49	17.12
5	125	141.3	3.40	–	–	6.55	6.55	–	9.53	9.53	–	12.70	–	15.88	19.05
6	150	168.3	3.40	–	–	7.11	7.11	–	10.97	10.97	–	14.27	–	18.26	21.95
8	200	219.1	3.76	6.35	7.04	8.18	8.18	10.31	12.70	12.70	15.09	18.26	20.62	23.01	22.23
10	250	273.0	4.19	6.35	7.80	9.27	9.27	12.70	12.70	15.09	18.26	21.44	25.40	28.58	25.40
12	300	323.8	4.57	6.35	8.38	9.53	10.31	14.27	12.70	17.48	21.44	25.40	28.58	33.32	25.40
14	350	355.6	6.35	7.92	9.53	9.53	11.13	15.09	12.70	19.05	23.83	27.79	31.75	35.71	–
16	400	406.4	6.35	7.92	9.53	9.53	12.70	16.66	12.70	21.44	26.19	30.96	36.53	40.49	–
18	450	457	6.35	7.92	11.13	9.53	14.27	19.05	12.70	23.83	29.36	34.93	39.67	45.24	–
20	500	508	6.35	9.53	12.70	9.53	15.09	20.62	12.70	26.19	32.54	38.10	44.45	50.01	–
22	550	559	6.35	9.53	12.70	9.53	–	22.23	12.70	28.58	34.93	41.28	47.63	53.98	–
24	600	610	6.35	9.53	14.27	9.53	17.48	24.61	12.70	30.96	38.89	46.02	52.37	59.54	–
26	650	660	7.92	12.70	–	9.53	–	–	12.70	–	–	–	–	–	–
28	700	711	7.92	12.70	15.88	9.53	–	–	12.70	–	–	–	–	–	–
30	750	762	7.92	12.70	15.88	9.53	–	–	12.70	–	–	–	–	–	–
32	800	813	7.92	12.70	15.88	9.53	17.48	–	12.70	–	–	–	–	–	–
34	850	864	7.92	12.70	15.88	9.53	17.48	–	12.70	–	–	–	–	–	–
36	900	914	7.92	12.70	15.88	9.53	19.05	–	12.70	–	–	–	–	–	–
38	950	965	–	–	–	9.53	–	–	12.70	–	–	–	–	–	–
40	1000	1016	–	–	–	9.53	–	–	12.70	–	–	–	–	–	–
42	1050	1067	–	–	–	9.53	–	–	12.70	–	–	–	–	–	–

Chemical Requirement

Our ASTM A333 steel pipe has a special chemical makeup. It ensures optimal performance in cryogenic conditions. The pipe has a carbon content of less than 0.30%. For every 0.01% reduction in carbon, the manganese content can increase by 0.05% above 1.06%, up to a max of 1.35%. This careful balance of elements increases the pipe’s strength, durability, and low-temperature impact resistance.

Chemical Requirements
Element	Composition, %
Element	Grade 1A	Grade 3	Grade 4	Grade 6A	Grade 7	Grade 8	Grade 9	Grade 10	Grade 11
Carbon, max	0.3	0.19	0.12	0.3	0.19	0. 13	0.2	0.2	0.10
Manganese	0.40– 1.06	0.31–0.64	0.50– 1.05	0.29– 1.06	0.90 max	0.90 max	0.40– 1.06	1.15– 1.50	0.60 max
Phosphorus, max	0.025	0.025	0.025	0.025	0.025	0.025	0.025	0.035	0.025
Sulfur, max	0.025	0.025	0.025	0.025	0.025	0.025	0.025	0.015	0.025
Silicon	–	0.18–0.37	0.08–0.37	0.10 min	0.13–0.32	0.13–0.32	–	0.10–0.35	0.35 max
Nickel	–	3.18–3.82	0.47–0.98	–	2.03–2.57	8.40–9.60	1.60–2.24	0.25 max	35.0–37.0
Chromium	–	–	0.44– 1.01	–	–	–	–	0.15 max	0.50 max
Copper	–	–	0.40–0.75	–	–	–	0.75– 1.25	0.15 max	–
Aluminum	–	–	0.04–0.30	–	–	–	–	0.06 max	–
Vanadium, max	–	–	–	–	–	–	–	0.12	–
Columbium, max	–	–	–	–	–	–	–	0.05	–
Molybdenum, max	–	–	–	–	–	–	–	0.05	0.50 max
Cobalt	–	–	–	–	–	–	–	–	0.50 max
A For each reduction of 0.01 % carbon below 0.30 %, an increase of 0.05 % manganese above 1.06 % would be permitted to a maximum of 1.35 % manganese.

ASTM A333 Grade 6, 1, 3, 4, 7, 9, 10, 11 Chemical Test Values

Tensile Requirements
Mechanical Properties	Grade 1		Grade 3		Grade 4		Grade 6		Grade 7		Grade 8		Grade 9		Grade 10		Grade 11
Mechanical Properties	psi	MPa	psi	MPa	psi	MPa	psi	MPa	psi	MPa	psi	MPa	psi	MPa	psi	MPa	psi	MPa
Tensile Strength, min	55000	380	65000	450	60000	415	60000	415	65000	450	100000	690	63000	435	80000	550	65000	450
Yield Strength, min	30000	205	35000	240	35000	240	35000	240	35000	240	75000	515	46000	315	65000	450	35000	240

Why Choose UNIASEN?

A wide range of pipe sizes, wall thicknesses, and lengths are available. This gives you the flexibility to choose the pipe that best suits your needs.
A variety of ferritic steel grades are available, each selected for its superior performance in cold conditions.
Our ASTM A333 pipes are made with seamless or welded processes. They contain no filler metal. This ensures the highest quality and durability.
We test our pipes thoroughly. This includes tensile, flattening, hardness, and bend tests.
For material heat treated in batch furnaces, 5% of the pipes from each processing batch are tested.
Our ASTM A333 pipes are made of ferritic steel. They come in various grades. Each grade is designed for peak performance in cryogenic applications.
When ordering Grade 6, we ensure that no elements other than those listed in the ordered grade are added. However, additions of elements required for deoxidation of the steel are permitted.
We also test each heat treatment load with hydrostatic and impact tests. This ensures the pipe’s strength and durability.