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    ASTM A213 / A213M - 17

    Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

    Active Standard ASTM A213 / A213M | Developed by Subcommittee: A01.10

    Book of Standards Volume: 01.01

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    Abstract

    This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes. 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 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.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification2 covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T5, TP304, etc. These steels are listed in Tables 1 and 2.

    (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.

    1.2 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.

    1.3 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.

    1.4 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    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

    ICS Code

    ICS Number Code 23.040.10 (Iron and steel pipes)

    Referencing This Standard
    Link Here
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    DOI: 10.1520/A0213_A0213M-17

    Citation Format

    ASTM A213 / A213M-17, Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes, ASTM International, West Conshohocken, PA, 2017, www.astm.org

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