1、Designation: A210/A210M 02 (Reapproved 2012)Standard Specification forSeamless Medium-Carbon Steel Boiler and SuperheaterTubes1This standard is issued under the fixed designation A210/A210M; the number immediately following the designation indicates the yearof original adoption or, in the case of re
2、vision, the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification2covers minimum-wall-thickness,seamless medium-carbon steel, boiler tubes and bo
3、iler flues,including safe ends (see Note 1), arch and stay tubes, andsuperheater tubes.NOTE 1This type is not suitable for safe ending by forge welding.1.2 The tubing sizes and thicknesses usually furnished tothis specification are12 in. to 5 in. 12.7 to 127 mm in outsidediameter and 0.035 to 0.500
4、in. 0.9 to 12.7 mm, inclusive, inminimum wall thickness. Tubing having other dimensions maybe furnished, provided such tubes comply with all otherrequirements of this specification.1.3 Mechanical property requirements do not apply totubing smaller than18 in. 3.2 mm in inside diameter or 0.015in. 0.4
5、 mm in thickness.1.4 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within the text, theSI units are shown in brackets. The values stated in eachsystem are not exact equivalents; therefore, each system mustbe used independently of the other. Combin
6、ing values from thetwo systems may result in nonconformance with the specifi-cation. The inch-pound units shall apply unless the “M”designation of this specification is specified in the order.2. Referenced Documents2.1 ASTM Standards:3A450/A450M Specification for General Requirements forCarbon and L
7、ow Alloy Steel Tubes3. Ordering Information3.1 Orders for material under this specification shouldinclude the following, as required, to describe the desiredmaterial adequately:3.1.1 Quantity (feet, metres, or number of lengths),3.1.2 Name of material (seamless tubes),3.1.3 Grade,3.1.4 Manufacture (
8、hot-finished or cold-finished),3.1.5 Size (outside diameter and minimum wall thickness),3.1.6 Length (specific or random),3.1.7 Optional requirements (Sections 7 and 10),3.1.8 Test report required, (see Certification Section ofSpecification A450/A450M),3.1.9 Specification designation, and3.1.10 Spec
9、ial requirements.4. General Requirements4.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecification A450/A450M, unless otherwise provided herein.5. Manufacture5.1 Steelmaking PracticeThe steel shall be killed.5.2 The tubes shal
10、l be made by the seamless process andshall be either hot-finished or cold-finished, as specified.6. Heat Treatment6.1 Hot-finished tubes need not be heat treated. Cold-finished tubes shall be given a subcritical anneal, a full anneal,or a normalizing heat treatment after the final cold finishingproc
11、ess.7. Surface Condition7.1 If pickling or shot blasting or both are required, thisshall be specifically stated in the order.8. Chemical Composition8.1 The steel shall conform to the requirements as tochemical composition prescribed in Table 1.8.2 When a grade is ordered under this specification, su
12、p-plying an alloy grade that specifically requires the addition of1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.09 on Carbon Steel Tubular Products.Current edition approved Sept. 1,
13、2012. Published November 2012. Originallyapproved in 1938. Last previous edition approved in 2007 as A210/A210M 02(2007). DOI: 10.1520/A0210_A0210M-02R12.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-210 in Section II of that Code.3For referenced ASTM standards
14、, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 194
15、28-2959. United States1any element other than those listed for the ordered grade inTable 1 is not permitted.9. Product Analysis9.1 When requested on the purchase order, a product analy-sis shall be made by the supplier from one tube or billet perheat. The chemical composition thus determined shall c
16、onformto the requirements specified.9.2 If the original test for product analysis fails, retests oftwo additional billets or tubes shall be made. Both retests forthe elements in question shall meet the requirements of thespecification; otherwise, all remaining material in the heat orlot (see Note 2)
17、 shall be rejected or, at the option of theproducer, each billet or tube may be individually tested foracceptance. Billets or tubes which do not meet the require-ments of the specification shall be rejected.NOTE 2For flattening and flaring requirements, the term “lot” appliesto all tubes prior to cu
18、tting of the same nominal size and wall thicknesswhich are produced from the same heat of steel. When final heat treatmentis in a batch-type furnace, a lot shall include only those tubes of the samesize and from the same heat which are heat treated in the same furnacecharge. When the final heat trea
19、tment is in a continuous furnace, thenumber of tubes of the same size and from the same heat in a lot shall bedetermined from the size of the tubes as prescribed in Table 2.NOTE 3For tensile and hardness test requirements, the term “lot”applies to all tubes prior to cutting, of the same nominal diam
20、eter and wallthickness which are produced from the same heat of steel. When final heattreatment is in a batch-type furnace, a lot shall include only those tubes ofthe same size and the same heat which are heat treated in the same furnacecharge. When the final heat treatment is in a continuous furnac
21、e, a lot shallinclude all tubes of the same size and heat, heat treated in the same furnaceat the same temperature, time at heat, and furnace speed.10. Tensile Requirements10.1 The material shall conform to the requirements as totensile properties prescribed in Table 3.10.2 Table 4 gives the compute
22、d minimum elongationvalues for each132-in. 0.8-mm decrease in wall thickness.Where the wall thickness lies between two values shownabove, the minimum elongation value shall be determined bythe following equation:E 5 48t115.00 E 5 1.87t115.00#where:E = elongation in 2 in. or 50 mm, %, andt = actual t
23、hickness of specimen, in. mm.11. Hardness Requirements11.1 The tubes shall have a hardness not exceeding thefollowing: 79 HRB or 143 HB for Grade A-1, 89 HRB or 179HB for Grade C.12. Mechanical Tests Required12.1 Tension TestOne tension test shall be made on aspecimen for lots of not more than 50 tu
24、bes. Tension tests shallbe made on specimens from two tubes for lots of more than 50tubes (see Note 3).12.2 Flattening TestOne flattening test shall be made onspecimens from each end of one finished tube from each lot(see Note 2), but not the one used for the flaring test. Tears orbreaks occurring a
25、t the 12 or 6 oclock positions on Grade Ctubing with sizes of 2.375 in. 60.3 mm in outside diameterand smaller shall not be considered a basis for rejection.TABLE 1 Chemical RequirementsElement Composition, %Grade A-1 Grade CCarbonA, max 0.27 0.35Manganese 0.93 max 0.291.06Phosphorus, max 0.035 0.03
26、5Sulfur, max 0.035 0.035Silicon, min 0.10 0.10AFor each reduction of 0.01 % below the specified carbon maximum, an increaseof 0.06 % manganese above the specified maximum will be permitted up to amaximum of 1.35 %.TABLE 2 Number of Tubes in a Lot Heat Treated by theContinuous ProcessSize of Tube Siz
27、e of Lot2 in. (50.8 mm) and over in outside diameter and0.200 in. (5.1 mm) and over in wall thicknessnot more than 50 tubes2 in. (50.8 mm) and over in outside diameter andunder 0.200 in. (5.1 mm) in wall thicknessnot more than 75 tubesLess than 2 in. (50.8 mm) but over 1 in. (25.4mm)in outside diame
28、ternot more than 75 tubes1 in. (25.4 mm) or less in outside diameter not more than 125 tubesTABLE 3 Tensile RequirementsGrade A-1 Grade CTensile strength, min, ksi MPa 60 415 70 485Yield strength, min, ksi MPa 37 255 40 275Elongation in 2 in. or 50 mm, min, % 30 30For longitudinal strip tests, a ded
29、uction shall bemade for each132-in. 0.8-mm decrease inwall thickness under516 in. 8 mm from thebasic minimum elongation of the followingpercentage points1.50A1.50AWhen standard round 2-in. or 50-mm gage lengthor smaller proportionally sized specimenwith the gage length equal to 4D (four timesthe dia
30、meter) is used22 20ASee Table 4 for the computed minimum values.TABLE 4 Computed Minimum Elongation ValuesWall Thickness, in. mm Elongation in 2 in. or50 mm, min, %A516 (0.312) 8 30932 (0.281) 7.2 2814 (0.250) 6.4 27732 (0.219) 5.6 26316 (0.188) 4.8 24532 (0.156) 4 2218 (0.125) 3.2 21332 (0.094) 2.4
31、 20116 (0.062) 1.6 180.062 to 0.035 1.6 to 0.9, excl 170.035 to 0.022 0.9 to 0.6, excl 160.022 to 0.015 0.6 to 0.4, incl 16ACalculated elongation requirements shall be rounded to the nearest wholenumber.A210/A210M 02 (2012)212.3 Flaring TestOne flaring test shall be made on speci-mens from each end
32、of the one finished tube from each lot (seeNote 2), but not the one used for the flattening test.12.4 Hardness TestBrinell or Rockwell hardness testsshall be made on specimens from two tubes from each lot (seeNote 3).12.5 Hydrostatic or Nondestructive Electric TestEachtube shall be subjected to the
33、hydrostatic, or, instead of thistest, a nondestructive electric test may be used when specifiedby the purchaser.13. Forming Operations13.1 When inserted in the boiler, tubes shall stand ex-panding and beading without showing cracks or flaws. Whenproperly manipulated, superheater tubes shall stand al
34、l forging,welding, and bending operations necessary for applicationwithout developing defects.14. Product Marking14.1 In addition to the marking prescribed in SpecificationA450/A450M, the marking shall indicate whether the tube ishot-finished or cold-finished.14.2 Bar CodingIn addition to the requir
35、ements in 14.1bar coding is acceptable as a supplemental identificationmethod. The purchaser may specify in the order a specific barcoding system to be used.15. Keywords15.1 boiler tubes; carbon; seamless steel tube; steel tube;superheater tubesASTM International takes no position respecting the val
36、idity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is sub
37、ject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headqua
38、rters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standa
39、rd is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).A210/A210M 02 (2012)3
