ASTM A192 Tubes

ASTM A192 Tubes are seamless carbon steel tubes designed for high-pressure service in boilers, superheaters, and heat exchangers, offering superior corrosion resistance and strength. Conforming to ASTM A192/ASME SA192 standards, these tubes are ideal for boiler pipeline protection in power generation, petrochemical, and industrial heating systems. Their seamless construction ensures reliability under extreme temperatures and pressures, making them a trusted choice for demanding applications.

The ASTM A192 Tubes are manufactured through a seamless, hot-finished or cold-drawn process, followed by heat treatment at 1200°F (650°C) or higher to optimize mechanical properties and surface quality. Available in outside diameters from 1/2” to 7” (12.7 mm to 177.8 mm) and wall thicknesses from 0.085” to 1.000” (2.2 mm to 25.4 mm), these tubes meet stringent project requirements. They undergo rigorous testing, including flattening, flaring, hardness, and hydrostatic tests, ensuring compliance with ASTM A450/A450M standards. The carbon steel composition enhances durability and abrasion resistance, making them suitable for seamless boiler tubes.

These carbon steel tubes excel in high-pressure boiler systems and superheaters due to their ability to withstand thermal stress and corrosion. Their high strength and corrosion resistance make them ideal for environments exposed to high temperatures (up to 650°C) and corrosive fluids. Surface treatments such as oil-dip, varnish, or passivation, along with options for straight or U-bent configurations, support versatile installation in industrial piping systems. The tubes are packed in wooden boxes or bundles with plastic paper for secure, sea-worthy delivery.

The ASTM A192 Tubes address critical challenges like pipeline wear, corrosion, and high-pressure stress in boiler systems. Their seamless design and robust material properties make them a reliable choice for engineers seeking durable high-pressure boiler tubes for extreme environments. Whether used in power plants or industrial heating systems, these tubes deliver exceptional performance, safety, and longevity.

ASTM A192 Tubes

ASTM A192 Tubes Pressure Rating

Maximum Allowable Pressure (psi)
NPS	Outside Diameter	Schedule
(in)	(in)	10	20	30	STD	40	60	XS	80	100	120	140	160	XXS
1/4	0.54				7985	7985		10798	10798
3/8	0.675				6606	6606		9147	9147
1/2	0.84				6358	6358		8575	8575				10908	17150
3/4	1.05				5273	5273		7187	7187				10220	14373
1	1.315				4956	4956		6670	6670				9316	13340
1 1/4	1.66				4133	4133		5638	5638				7380	11276
1 1/2	1.9				3739	3739		5158	5158				7247	10316
2	2.375				3177	3177		4498	4498				7097	8995
2 1/2	2.875				3460	3460		4704	4704				6391	9408
3	3.5				3024	3024		4200	4200				6132	8400
3 1/2	4				2769	2769		3896	3896
4	4.5				2581	2581		3670	3670		4769		5782	7339
5	5.563				2273	2273		3303	3303		4404		5505	6606
6	6.625				2071	2071		3195	3195		4157		5318	6390
8	8.625		1420	1574	1829	1829	2307	2841	2841	3375	4085	4613	5147	4971
10	10.75		1140	1399	1664	1664	2279	2279	2708	3277	3847	4558	5128	4558
12	12.75		961	1268	1441	1560	2160	1922	2644	3244	3843	4324	5042	3843
14	14	875	1092	1313	1313	1533	2079	1750	2625	3283	3829	4375	4921
16	16	766	956	1148	1148	1531	2009	1531	2585	3157	3733	4404	4882
18	18	681	849	1192	1021	1530	2042	1361	2553	3147	3743	4252	4848
20	20	613	919	1225	919	1455	1989	1225	2526	3138	3675	4288	4824
22	22	557	835	1114	835		1949	1114	2506	3063	3619	4176	4733
24	24	510	766	1147	766	1405	1978	1021	2489	3126	3700	4210	4786
30	30	510	817	1021	613			817
32	32	478	766	957	574	1054
34	34	450	721	901	540	992
36	36	425	681	851	510	1021
42	42		583	729	438	875

Maximum working pressure of ASTM A192 Tube at temperature 400°F, The dimensions - outside pipe diameters and wall thicknesses are according ANSI B36.10.

Key Benefits

High-Temperature Strength

Withstands temperatures up to 650°C for boiler applications.

Corrosion Resistance

Carbon steel resists corrosion in high-pressure environments.

Abrasion Resistance

Durable material withstands pipeline wear and tear.

Seamless Durability

Seamless construction ensures reliability under high pressure.

Versatile Installation

Supports straight or U-bent configurations for flexibility.

Cost-Effective

High durability reduces maintenance and replacement costs.

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Tensile Strength (MPa)

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Yield Strength (MPa)

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Min Elongation (%)

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Max Carbon (%)

Technical Specifications

Chemical Composition of ASTM A192
Element	Composition (%)
Carbon (C)	0.06–0.18
Manganese (Mn)	0.27–0.63
Silicon (Si)	≤0.25
Phosphorus (P)	≤0.035
Sulfur (S)	≤0.035

Mechanical Properties of ASTM A192
Property	Value
Tensile Strength, min (MPa)	325
Yield Strength, min (MPa)	180
Elongation, min (%)	35
Hardness (HBW)	≤137 (for ≥5.1 mm wall thickness)

What Is SA 192 Equivalent To?

The ASTM A192/ASME SA192 standard is applicable to seamless carbon steel pipes used for boilers and superheaters in high-pressure environments, with a focus on meeting the minimum wall thickness necessary for these applications.

ASTM A 192 boiler tube equivalent EN 10216-2, DIN 17175, BS 3059 Part II, NF A 49-213, NBR 5594 ASTM (American Society for Testing Materials standard) A192 and ASME (American Society of Mechanical Engineers standards) SA192. Equivalent Materials 1010, St35.

Comparison of ASTM A192 with Other Boiler Tube Grades
Feature	ASTM A192	ASTM A179	ASTM A210 Grade A1
Material Type	Carbon Steel	Carbon Steel	Carbon Steel
Application	High-Pressure Boilers & Superheaters	Low-Pressure Heat Exchangers	Medium-Pressure Boiler Tubes
Manufacturing Process	Seamless, Hot/Cold Finished	Cold Drawn	Hot Rolled or Cold Drawn
Tensile Strength (MPa)	≥325	≥325	≥415
Yield Strength (MPa)	≥180	≥180	≥255
Elongation (%)	≥35	≥35	≥30
Temperature Service Range	High (Steam & Pressure)	Low to Medium	Medium
Corrosion Resistance	Good (With Coatings)	Moderate	Moderate
Key Advantage	High-pressure capability & structural durability	High thermal conductivity for heat exchangers	Cost-effective for general boiler use

Industrial Applications

Commonly used in high-pressure boilers, heat exchangers, superheaters, and power plant piping systems where high strength and corrosion resistance are essential.