1、Designation: A 210/A 210M 02Standard Specification forSeamless Medium-Carbon Steel Boiler and SuperheaterTubes1This standard is issued under the fixed designation A 210/A 210M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the ye
2、ar of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope *1.1 This specification2covers minimum-wall-thickness,seamless medium-carbon steel, boiler tubes and boiler flues,
3、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 in. 0.9 to
4、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 mm in thic
5、kness.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. Combining values
6、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:A 450/A 450M Specification for General Requirements forCarbon, Ferritic Alloy
7、, and Austenitic Alloy Steel Tubes33. 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.
8、4 Manufacture (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 A 450/A 450M),3.1.9 Specification designatio
9、n, and3.1.10 Special requirements.4. General Requirements4.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecification A 450/A 450M, unless otherwise providedherein.5. Manufacture5.1 Steelmaking PracticeThe steel shall be killed.
10、5.2 The tubes shall 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
11、cold finishingprocess.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
12、 specification, sup-plying an alloy grade that specifically requires the addition ofany element other than those listed for the ordered grade inTable 1 is not permitted.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct r
13、esponsibility of SubcommitteeA01.09 on Carbon Steel Tubular Products.Current edition approved Sept. 10, 2002. Published November 2002. Originallypublished as A 210 38 T. Last previous edition A 210/A 210M 96 (2001).2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-
14、210 in Section II of that Code.3Annual Book of ASTM Standards, Vol 01.01.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.9. Product Analysis9.1 When requested on the p
15、urchase order, a product analy-sis shall be made by the supplier from one tube or billet perheat. The chemical composition thus determined shall conformto the requirements specified.9.2 If the original test for product analysis fails, retests oftwo additional billets or tubes shall be made. Both ret
16、ests forthe elements in question shall meet the requirements of thespecification; otherwise, all remaining material in the heat orlot (see Note 2) 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
17、require-ments of the specification shall be rejected.NOTE 2For flattening and flaring requirements, the term “lot” appliesto all tubes prior to cutting 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 lo
18、t 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 treatment 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 pre
19、scribed in Table 2.NOTE 3For tensile and hardness test requirements, the term “lot”applies to all tubes prior to cutting, of the same nominal diameter 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
20、 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 furnace, 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. Te
21、nsile Requirements10.1 The material shall conform to the requirements as totensile properties prescribed in Table 3.10.2 Table 4 gives the computed minimum elongationvalues for each132-in. 0.8-mm decrease in wall thickness.Where the wall thickness lies between two values shownabove, the minimum elon
22、gation value shall be determined bythe following equation:E 5 48t 1 15.00 E 5 1.87t 1 15.00#where:E = elongation in 2 in. or 50 mm, %, andt = actual thickness 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,
23、 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 tubes. 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 b
24、e 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 at 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 rej
25、ection.12.3 Flaring TestOne flaring test shall be made on speci-mens from each end 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).
26、TABLE 1 Chemical RequirementsElement Composition, %Grade A-1 Grade CCarbonA, max 0.27 0.35Manganese 0.93 max 0.291.06Phosphorus, max 0.035 0.035Sulfur, max 0.035 0.035Silicon, min 0.10 0.10AFor each reduction of 0.01 % below the specified carbon maximum, anincrease of 0.06 % manganese above the spec
27、ified maximum will be permitted upto a maximum of 1.35 %.TABLE 2 Number of Tubes in a Lot Heat Treated by theContinuous ProcessSize of Tube Size 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 outsid
28、e 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 diameternot 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, mi
29、n, 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 deduction shall bemade for each132-in. 0.8-mm decrease inwall thickness under516in. 8 mm from thebasic minimum elongation of the followingpercentage points1.50A
30、1.50AWhen standard round 2-in. or 50-mm gage lengthor smaller proportionally sized specimenwith the gage length equal to 4D (four timesthe diameter) 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,
31、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 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
32、 shall be rounded to the nearest wholenumber.A 210/A 210M 02212.5 Hydrostatic or Nondestructive Electric TestEachtube shall be subjected to the hydrostatic, or, instead of thistest, a nondestructive electric test may be used when specifiedby the purchaser.13. Forming Operations13.1 When inserted in
33、the boiler, tubes shall stand ex-panding and beading without showing cracks or flaws. Whenproperly manipulated, superheater tubes shall stand all forging,welding, and bending operations necessary for applicationwithout developing defects.14. Product Marking14.1 In addition to the marking prescribed
34、in SpecificationA 450/A 450M, the marking shall indicate whether the tube ishot-finished or cold-finished.14.2 Bar CodingIn addition to the requirements in 14.1bar coding is acceptable as a supplemental identificationmethod. The purchaser may specify in the order a specific barcoding system to be us
35、ed.15. Keywords15.1 boiler tubes; carbon; seamless steel tube; steel tube;superheater tubesSUMMARY OF CHANGESThis section identifies the location of selected changes to this specification that have been incorporated sincethe last edition, A 210/A 210M 96 (2001), as follows:(1) Paragraph 1.4 was dele
36、ted and the subsequent subsectionwas renumbered.(2) Paragraph 2.1 was revised to delete reference to Specifi-cation A 520.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expre
37、ssly 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 subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised
38、, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may a
39、ttend. 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 standard 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).A 210/A 210M 023
