ASTM A213 T12 Seamless Alloy Pipes

ASTM A213 T12 seamless alloy pipes are specifically designed for use in high-temperature environments. These pipes, made from chromium-molybdenum alloy steel, are highly durable and are widely used in industries like power generation, petrochemicals, and oil and gas. Their ability to handle high temperatures and pressures makes them essential in boiler, superheater, and heat-exchanger applications.

Key Features

• Material Composition: T12 grade is an alloy of chromium and molybdenum, which enhances its mechanical properties and performance under extreme temperatures and pressures.
• Seamless Construction: The seamless design ensures uniform strength throughout the pipe, reducing the risk of weak spots that can occur with welded pipes.
• High-Temperature Performance: Designed to perform effectively in applications where they are subjected to extreme temperatures.
• Corrosion Resistance: The chromium content enhances resistance to oxidation and corrosion, even at elevated temperatures, improving the longevity of the pipes.

Applications

• Power Plants: Used in superheaters, reheaters, and boilers to transport steam and other fluids under high-temperature conditions.
• Petrochemical Industry: Widely used in equipment that requires resistance to high temperatures and corrosive environments.
• Oil and Gas Industry: Suitable for piping systems that operate under high pressure and temperature, including refineries and pipelines.
• Heat Exchangers: Essential in heat-exchanger applications, where resistance to thermal stress and high performance are required.

Advantages

• Durability: Designed for high-pressure and high-temperature conditions, these pipes are exceptionally durable and can maintain their integrity under challenging operating conditions.
• Excellent Thermal Stability: The chromium-molybdenum alloy provides superior performance in high-temperature environments, minimizing thermal expansion and reducing wear.
• Improved Lifespan: Enhanced resistance to corrosion and oxidation allows these pipes to have a longer service life, even in aggressive environments.
• Versatility: The ability to withstand both high temperatures and pressures makes ASTM A213 T12 pipes versatile for a variety of industrial applications.

Specifications

ASTM A213 T12 seamless alloy pipes are vital in industries requiring reliable and durable piping systems that can endure extreme temperature and pressure conditions. These pipes are a popular choice in power plants, refineries, and chemical processing units due to their excellent thermal stability, strength, and corrosion resistance.

• Grade: T12
• Outer Diameter: Customized as per requirement
• Wall Thickness: Available in various thicknesses to suit different applications
• Length: Supplied in fixed or random lengths
• Standards: Compliant with ASTM A213 specifications
• Type: Seamless Alloy Steel Pipe

ASTM A213 T12 Tube is made up of a material composition of carbon, manganese, phosphorus, sulfur, silicon, 0.8% chromium and 0.44% molybdenum minimum. The material has good corrosion resistance, strength and high heat tolerance.

ASTM A213 T12 Grades containing the letter H in their designation have requirements different from those of similar grades not containing the letter H.

These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements. ASTM A213 T12 tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified. Grade TP347HFG shall be cold finished. Heat treatment shall be done separately and in addition to heating for hot forming. The ferritic alloy and ferritic stainless steels shall be reheated. On the other hand, austenitic stainless steel tubes shall be furnished in the heat-treated condition. Alternatively, immediately after hot forming, while the temperature of the tubes is not less than the minimum solution temperature, tubes may be individually quenched in water or rapidly cooled by other means. Tension test, hardness test, flattening test, and flaring test shall be done to each tube. Also, each tube shall be subjected to the nondestructive electric test or hydrostatic test.

A213 T11 T12 alloy seamless tubes are designed to meet the demands of high temperature and industrial applications. Manufactured from high quality alloy steel, these seamless tubes offer exceptional heat resistance and reliability. Whether you need precision seamless solutions for critical processes or industrial applications requiring heat resistant tubing, our A213 T11 T12 tubes are designed to deliver optimum performance and durability.

Chemical Composition(%) for ASTM A213 T12 Low Alloy Steel

ASTM A213 T12 tubes are made from low alloy steel with a chemical composition that typically includes chromium (Cr) and molybdenum (Mo). These elements enhance the material's strength, hardness, and resistance to high-temperature environments.

Mechanical properties for ASTM A213 T12 Low Alloy Steel

ASTM A213 T12 alloy steel tubes offer excellent mechanical properties, including high tensile strength, yield strength, and good ductility. These properties make T12 tubes suitable for high-pressure and high-temperature applications.

Standards Compliance

Our ASTM A213 T12 tubes comply with the relevant international standards and specifications, ensuring reliability and consistency. These standards include:

• ASTM A213/A213M
• ASME SA213

Compliance with these standards guarantees that our tubes meet the required mechanical and chemical properties for high-temperature service.

Customization Services

We offer customization services for ASTM A213 T12 tubes, including different sizes, lengths, and surface finishes, to meet specific customer requirements. Our technical team is available to provide guidance and support for your unique application needs.

Manufacturing Process and Quality Control

Our ASTM A213 T12 tubes are manufactured using advanced processes such as hot rolling and cold drawing to ensure precision and high-quality standards. Rigorous quality control measures, including non-destructive testing, are implemented to verify the integrity and performance of the tubes.

Out diameter

Out diameter

Wall thickness

Wall thickness

Length

Length

Length

Tube inside

Scope

(A) Maximum, unless range or minimum is indicated. Where ellipses (...) appear in this table, there is no requirement, and analysis for the element need not be determined or reported.
(B) It is permissible to order T2 and T12 with a sulfur content of 0.045 max. See 16.3.
(C) Alternatively, in lieu of this ratio minimum, the material shall have a minimum hardness of 275 HV in the hardened condition, defined as after austenitizing and cooling to room temperature but prior to tempering. Hardness testing shall be performed at mid-thickness of the product. Hardness test frequency shall be two samples of product per heat treatment lot and the hardness testing results shall be reported on the material test report.
(D) The terms Niobium (Nb) and Columbium (Cb) are alternate names for the same element.
(A) Maximum, unless a range or minimum is indicated. Where ellipses (...) appear in this table, there is no minimum and analysis for the element need not be determined or reported.
(B) The method of analysis for Nitrogen shall be a matter of agreement between the purchaser and the producer.
(C) For these alloys, there is no common grade designation. The UNS number uniquely identifies these alloys.
(D) For small diameter or thin walls, or both, where many drawing passes are required, a carbon maximum of 0.040% is necessary in Grades TP304L, TP304LN, TP316L, and TP316LN.
(E) Grade S30434 shall have (Ti + 1/2 Nb) of not less than 2 times and not more than 4 times the carbon content.
(F) Grade TP347LN shall have an Nb content of not less than 15 times the carbon content.
(G) Grade TP348 shall have an Nb + Ta content of not less than 10 times the carbon content and not more than 1.10%.
(H) Grade TP348H shall have an Nb + Ta content of not less than 8 times the carbon content and not more than 1.10%.
(I) Iron shall be determined arithmetically by difference of 100 minus the sum of the other specified elements.
(J) Al + Ti shall be 0.85 % min; 1.20 % max.
(K) Grade TP444 shall have Ni + Cu = 1.00 max.
(L) Grade TP444 shall have Ti + Nb content not less than 0.20 + 4(C+N) and not more than 0.80 %.
(M) N08020 shall have an Nb + Ta content of not less than 8 times the carbon content and not more than 1.00%.
(N) The terms Niobium (Nb) and Columbium (Cb) are alternate names for the same element.

Grades containing the letter, H, in their designation, have requirements different from those of similar grades not containing the letter, H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements.

The tubing sizes and thicknesses usually furnished to this specification are 1/8 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specification.

The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.

Referenced Documents (purchase separately)

ASTM Standards

• A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
• A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
• A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
• E112 Test Methods for Determining Average Grain Size

AWS Specifications

• A5.23/A5.23M Specification for Low-Alloy Steel Electrodes and Fluxes for Submerged Arc Welding
• A5.5/A5.5M

Terminology

Definitionx—For definitions of terms used in this speci- fication, refer to Terminology A 941.

Ordering Information

It shall be the responsibility of the purchaser to specify all requirements that are necessary for products under this specification. Such requirements to be considered include, but are not limited to, the following:

1.1 Quantity (feet, metres, or number of lengths),

1.2 Name of material (seamless tubes),

1.3 Grade (Tables 1 and 2),

1.4 Condition (hot finished or cold finished),

1.5 Controlled structural characteristics (see 6.3),

1.6 Size (outside diameter and minimum wall thickness, unless average wall thickness is specified),

1.7 Length (specific or random),

1.8 Hydrostatic Test or Nondestructive Electric Test (see 10.1),

1.9 Specification designation and year of issue,

1.10 Increased sulfur (for machinability, see Note B, Table 1, and 15.3), and

1.11 Special requirements and any supplementary require- ments selected.

General Requirements

Product furnished to this specification shall conform to the requirements of Specification A 1016/A 1016M, including any supplementary requirements that are indicated in the purchase order. Failure to comply with the general require- ments of Specification A 1016/A 1016M constitutes noncon- formance with this specification. In case of conflict between the requirements of this specification and Specification A 1016/ A 1016M, this specification shall prevail.

Materials and Manufacture

1 Manufacture and Condition—Tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified. Grade TP347HFG shall be cold finished.

Heat Treatment

1 Ferritic Alloy and Ferritic Stainlexx Steelx—The fer- ritic alloy and ferritic stainless steels shall be reheated for heat treatment in accordance with the requirements of Table 3. Heat treatment shall be carried out separately and in addition to heating for hot forming.

2 Auxtenitic Stainlexx Steelx—All austenitic tubes shall be furnished in the heat-treated condition, and shall be heat treated in accordance with the requirements of Table 3. Alter- natively, immediately after hot forming, while the temperature of the tubes is not less than the minimum solution treatment temperature specified in Table 3, tubes may be individually quenched in water or rapidly cooled by other means (direct quenched).

3 If any controlled structural characteristics are required, these shall be so specified in the order as to be a guide as to the most suitable heat treatment.

Heat Treatment and Grain Size Requirements^A

ASTM A213M-09 Material Comparison Tables

ASTM A213M-09 Mechanical properties

A Maximum, unless range or minimum is indicated. Where ellipses (...) appear in this table, there is no requirement, and analysis for the element need not be determined or reported.

B It is permissible to order T2 and T12 with a sulfur content of 0.045 max. See 16.3.

C Alternatively, in lieu of this ratio minimum, the material shall have a minimum hardness of 275 HV in the hardened condition, defined as after austenitizing and cooling to room temperature but prior to tempering.

Hardness test frequency shall be two samples of product per heat treatment lot and the hardness testing results shall be reported on the material test report.

Material Comparison Tables (ASTM ℃KS, JIS, DIN, BS, NBN, NF, UNI)

A 213 - Seamless Alloy Steel Boiler and Heat Exchanger Tubes