ASTM A213 T11 Boiler Tube

Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of astm a213 t11 boiler tube in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.

ASTM A213 T11 Seamless Alloy Steel Boiler Tube

ASTM A213 T11 Boiler Tube | 1Cr-0.5Mo Seamless Tube for Boilers, Superheaters & Heat Exchangers

Xi'an Dongmeng Group Co., Ltd. supplies ASTM A213 T11 seamless chromium-molybdenum alloy steel tubes for boiler, superheater, heat exchanger and other elevated-temperature pressure applications.

ASTM A213 T11, UNS K11597, contains approximately 1.00–1.50% chromium and 0.44–0.65% molybdenum, providing better elevated-temperature strength and oxidation resistance than ordinary carbon-steel boiler tubes. It is commonly specified for power generation, industrial boilers, petrochemical plants, heat-recovery systems and refinery heat-transfer equipment.

ASTM A213/A213M requires tubes under this specification to be manufactured by the seamless process, either hot-finished or cold-finished as specified. The current active ASTM edition is ASTM A213/A213M-25.

ASTM A213 T11 is a seamless ferritic chromium-molybdenum alloy steel tube intended principally for boiler, superheater and heat-exchanger service.

The ASTM A213 specification covers seamless ferritic and austenitic alloy-steel tubes. ASTM states that tubes covered by this specification are manufactured by a seamless process and may be supplied hot-finished or cold-finished according to the order requirements.

T11 is particularly useful where a project requires better elevated-temperature performance than conventional carbon-steel boiler tubing but does not require the substantially higher chromium content associated with grades such as T91.

Typical project environments include:

Utility and industrial boilers

Superheater tube assemblies

Heat recovery steam generators

Heat exchangers

Petrochemical process heaters

Refinery equipment

Steam-generation equipment

High-temperature process systems

Tenaris also lists ASTM/ASME A/SA213 T11 among tube grades used for HRSGs, conventional boilers and heat exchangers in power-generation applications.

The chemistry of T11 is designed around chromium and molybdenum additions that improve elevated-temperature material performance.

UNS designation: K11597. Published ASTM data identify the same principal chemistry limits for T11.

Why Cr-Mo Alloying Matters

Chromium supports oxidation resistance and material stability at elevated temperature.

Molybdenum contributes to elevated-temperature strength and resistance to softening during prolonged thermal exposure.

The combination makes T11 more appropriate than ordinary carbon steel for many boiler and heat-transfer systems operating under elevated temperature and pressure.

However, the material grade alone does not determine maximum safe operating temperature or pressure. Final limits must be established according to the applicable boiler or pressure-equipment design code, wall thickness, allowable stress, design life and operating environment.

Commonly specified room-temperature minimum requirements for ASTM A213 T11 include:

Published T11 specification data commonly show minimum tensile strength of 415 MPa, minimum yield strength of 205 MPa and minimum elongation of 30%.

Procurement note: Always use the exact ASTM/ASME edition specified by the project or purchase order. Mechanical-property tables found online can reflect different editions, specimen configurations or secondary interpretations.

Heat treatment is a critical part of T11 tube production because the final microstructure directly affects mechanical and elevated-temperature performance.

T11 may be supplied using an appropriate heat-treatment route such as:

Full annealing

Isothermal annealing

Normalizing and tempering

For normalized-and-tempered T11, published ASTM-based tables specify a minimum tempering temperature of approximately 650°C / 1200°F.

ASTM further requires ferritic alloy steel tubes to receive the appropriate heat treatment separately from the heating used for hot forming.

For project orders, the required heat-treatment route should be stated on the purchase specification whenever it is controlled by the equipment designer, ASME Code requirement or end-user specification.

ASTM A213 requires the tube to be produced by a seamless manufacturing process.

A typical T11 boiler tube production route may include:

Billet Inspection → Heating → Piercing → Hot Rolling / Elongation → Sizing → Cold Drawing if Required → Heat Treatment → Straightening → Cutting → Dimensional Inspection → Mechanical Testing → NDT / Hydrostatic Testing → Marking → Packing

Hot-Finished vs Cold-Finished T11 Tubes

Hot-Finished Tube

Hot finishing is commonly selected for standard boiler and pressure-service requirements where production efficiency and dimensional range are important.

Cold-Finished Tube

Cold finishing may be selected when the project requires tighter dimensional control, improved surface condition or more precise wall-thickness requirements.

The correct route should therefore be selected according to the drawing, tube size, tolerance and downstream fabrication requirements rather than simply by price.

ASTM states that tubing commonly furnished under A213 ranges from approximately:

Inside Diameter: from 3.2 mm

Outside Diameter: up to 127 mm

Wall Thickness: approximately 0.4–12.7 mm

Other dimensions may also be supplied when they satisfy all applicable specification requirements.

For project enquiries, Dongmeng Group recommends specifying dimensions as:

OD × Wall Thickness × Length

For example:

60.3 mm OD × 5.54 mm WT × 12,000 mm Length

When required, the RFQ should also identify:

Minimum wall or average wall

Fixed or random length

OD tolerance

Wall-thickness tolerance

Straightness requirement

Surface condition

End preparation

Quantity

Packing requirement

This is an important point for boiler-tube procurement.

ASTM A213 tubing may be ordered on a minimum-wall-thickness basis or, where permitted and specified, on an average-wall-thickness basis. ASTM's current scope explicitly refers to both minimum wall thickness and, when specified in the order, average wall thickness.

These two ordering methods should not be treated as identical.

For pressure equipment, the customer should clearly state:

"Minimum Wall"

or

"Average Wall"

in the enquiry and purchase order.

This helps prevent dimensional misunderstandings when comparing quotations from different tube manufacturers.

ASTM A213 is not simply a chemistry specification. It also establishes testing requirements for finished tubing.

The ASTM standard identifies requirements including:

Tension testing

Hardness testing

Flattening testing

Flaring testing

Nondestructive electric testing or hydrostatic testing

ASTM states that each tube is subject to a nondestructive electric test or hydrostatic test according to the specification requirements.

Depending on the project, additional inspection may include:

Third-party inspection may also be specified by the purchaser where required by the project.

For boiler and pressure-service tubing, material traceability should extend beyond simply marking "T11" on the tube.

A project quality package may include:

Material grade

Heat number

Chemical composition

Mechanical-test results

Heat-treatment record

Dimensions

Inspection results

NDT results when specified

Hydrostatic-test information where applicable

Applicable ASTM/ASME specification

Purchase-order traceability

For export boiler, EPC and power-generation projects, customers should state the required inspection-document format and third-party inspection requirements at the enquiry stage.

Boiler Tubes

T11 is commonly used in industrial and utility boiler systems exposed to elevated temperatures.

Superheater Tubes

The Cr-Mo alloy system makes T11 suitable for many superheater applications where elevated-temperature strength is required.

Heat Exchanger Tubes

ASTM A213 specifically covers heat-exchanger tubing, and T11 can be selected for heat-transfer equipment involving suitable high-temperature process conditions.

HRSG Systems

Heat recovery steam generators in combined-cycle power facilities commonly use Cr-Mo grades including T11 for suitable pressure and temperature zones.

Petrochemical & Refinery Equipment

T11 tubing may also be specified for heat-transfer equipment, process heaters and related pressure components in refinery and petrochemical installations.

A common purchasing mistake is treating T11 and P11 as the same product simply because their alloy chemistry is similar.

They are closely related Cr-Mo materials, but their product specifications serve different purposes.

Important Procurement Rule

T11 should not simply be renamed P11, and P11 should not automatically be supplied against an A213 T11 purchase order.

Even where chemistry is similar, the applicable specification controls:

Product form

Dimensions

Tolerances

Testing

Inspection

Certification

Manufacturing requirements

Code acceptance

The purchasing standard therefore matters as much as the material grade.

T11 and T22 are both common Cr-Mo boiler tube materials, but T22 contains substantially more chromium and molybdenum.

 T22 should not automatically be considered "better" for every project. Material selection should be based on design temperature, allowable stress, oxidation requirements, welding procedures, fabrication conditions and governing code.

ASTM A213 T11 is a Cr-Mo alloy steel and requires more controlled welding practice than ordinary carbon steel.

A qualified welding procedure should consider:

Tube wall thickness

Joint geometry

Welding process

Filler-metal selection

Preheat

Interpass temperature

Heat input

Cooling rate

Post-weld heat treatment

Applicable ASME or project requirements

Because welding requirements vary with thickness, component design and governing construction code, a product page should not specify one universal preheat or PWHT temperature for every T11 application.

The applicable WPS/PQR and construction code should govern fabrication.

For accurate technical review and pricing, send the following information:

Standard: ASTM A213/A213M
Grade: T11
Tube Size: OD × WT
Wall Basis: Minimum Wall / Average Wall
Length: Fixed / Random
Quantity: Pieces / Metres / Tonnes
Finish: Hot-Finished / Cold-Finished if specified
Heat Treatment: Project requirement if controlled
Testing: Standard + supplementary inspection
Documentation: Required certificate / test report
Third-Party Inspection: SGS / BV / TÜV or specified agency if required
Packing: Export bundle / seaworthy packing
Destination: Port / country

Example:

ASTM A213 T11 / 60.3 × 5.54 × 12,000 mm / Minimum Wall / 500 pcs / NDT Required

This information helps prevent repeated technical clarification and enables a more accurate quotation.

Xi'an Dongmeng Group Co., Ltd. supports project-based procurement of boiler, heat-exchanger and high-temperature alloy steel tubing.

Our supply approach focuses on matching the actual project requirement rather than quoting only by material name.

For T11 enquiries, procurement parameters can include:

ASTM/ASME specification

Tube size and tolerance

Minimum-wall or average-wall requirement

Manufacturing route

Heat-treatment condition

Testing requirements

Material traceability

Inspection documentation

Custom lengths

End preparation

Export packaging

Third-party inspection

For EPC, boiler-manufacturer, heat-exchanger and power-generation projects, customers can submit the tube schedule, BOM, drawing or purchase specification for technical review.

1. What is ASTM A213 T11?

ASTM A213 T11 is a seamless ferritic Cr-Mo alloy steel tube primarily used for boilers, superheaters and heat exchangers.

2. Is ASTM A213 T11 seamless?

Yes. ASTM A213/A213M requires tubing covered by the specification to be manufactured by the seamless process.

3. What is the UNS number of T11?

ASTM A213 T11 is identified as UNS K11597.

4. What alloy system is T11?

T11 is commonly described as approximately 1Cr-0.5Mo alloy steel, with 1.00–1.50% chromium and 0.44–0.65% molybdenum.

5. Is T11 the same as P11?

No. T11 is supplied under ASTM A213 for tube applications, while P11 is supplied under ASTM A335 for high-temperature piping. Similar chemistry does not make the two product specifications interchangeable.

6. Can T11 be used for superheaters?

Yes. Superheater tubing is one of the primary product applications covered by ASTM A213.

7. Can T11 be used for heat exchangers?

Yes. ASTM A213 covers heat-exchanger tubing, and T11 is used where its temperature, pressure and material characteristics match the design requirements.

8. Is T11 hot finished or cold finished?

ASTM A213 permits seamless tubes to be hot finished or cold finished as specified.

9. What tests are required for ASTM A213 tubing?

The standard includes tension, hardness, flattening and flaring testing, together with nondestructive electric testing or hydrostatic testing as applicable.

10. What information should I provide for a T11 quotation?

Provide standard, grade, OD, wall thickness, minimum/average-wall basis, length, quantity, heat treatment, inspection requirements, documentation and destination.

Need ASTM A213 T11 Seamless Boiler Tubes for a boiler, superheater, heat exchanger or power-generation project?

Send us your:

OD × WT × Length + Quantity + Wall Basis + Inspection Requirements + Destination

Xi'an Dongmeng Group Co., Ltd.

We can review your tube schedule or technical purchase specification before quotation to help confirm that the supplied material, dimensions, inspection scope and documentation match the project requirements.

Office Information

Completely recapitalize 24/7 communities via standards compliant metrics whereas.

Phone Number & Email

+8615769214734
office@dongmjd.com

WhatsApp

Dong: +8615769214734

Our Office Address

Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province

Hot Tags: astm a213 t11 boiler tube, China astm a213 t11 boiler tube manufacturers, suppliers, factory, ASTM A335 P11 Pipe, ASTM A335 P22 Pipe, ASTM A335 P5 Pipe, ASTM A335 P9 Pipe, ASTM A335 P91 Pipe, ASTM A691 1 1 4CR Pipe