1、Designation: A 210/A 210M 02 (Reapproved 2007)Standard 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 o
2、f revision, the year 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. Scope1.1 This specification2covers minimum-wall-thickness,seamless medium-carbon steel, boiler tubes a
3、nd boiler 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
4、.500 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
5、. 0.4 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. C
6、ombining 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:3A 450/A 450M Specification for General Requirements forCarbo
7、n and Low 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 Manufa
8、cture (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 designation, and3.
9、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.5.2 The
10、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 cold fin
11、ishingprocess.1This 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 Nov. 1, 2007. Published January 2008. Originallyapproved in 1
12、938. Last previous edition approved in 2002 as A 210/A 210M 02.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-210 in Section II of that Code.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org.
13、 For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.Copyright by ASTM Intl (all rights reserved); Wed Oct 29 03:27:49 E
14、ST 2008Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.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 requireme
15、nts as tochemical composition prescribed in Table 1.8.2 When a grade is ordered under this 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.9. Product Analysis9.1 When requested on
16、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 conformto the requirements specified.9.2 If the original test for product analysis fails, retests oftwo additional billets or tubes shall be made. Bot
17、h retests 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
18、 the 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,
19、 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 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 a
20、s 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 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
21、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 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.1
22、0. Tensile 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
23、 elongation value shall be determined bythe following equation:E 5 48t 1 15.00 E 5 1.87t 1 15.00where: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
24、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 tubes. Tension tests shallbe made on specimens from two tubes for lots of more than 50tubes (see Note 3).TABLE 1 Chemical RequirementsElement Compos
25、ition, %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 specified maximum will be permitted upto a maxi
26、mum 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 outside diameter andunder 0.200 in. (5.1 mm) in w
27、all 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, min, ksi MPa 60 415 70 485Yield strength, min
28、, 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 under516 in. 8 mm from thebasic minimum elongation of the followingpercentage points1.50A1.50AWhen standard round 2-in. or 50-mm ga
29、ge 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, min, %A516 (0.312) 8 30932 (0.281) 7.2 281
30、4 (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 shall be rounded to the nearest wholenumb
31、er.A 210/A 210M 02 (2007)2Copyright by ASTM Intl (all rights reserved); Wed Oct 29 03:27:49 EST 2008Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.12.2 Flattening TestOne flattening test shall be made onspecimens from each end of one finished
32、 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 rejection.12.3 Flaring TestOne flaring test shall b
33、e 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).12.5 Hydrostatic or Nondestructive Electric Test
34、Eachtube 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 the boiler, tubes shall stand ex-panding and beading without showing cracks or flaws. Whenproperly manipulate
35、d, 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 in SpecificationA 450/A 450M, the marking shall indicate whether the tube ishot-finished or cold-finished.14.
36、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 used.15. Keywords15.1 boiler tubes; carbon; seamless steel tube; steel tube;superheater tubesASTM International
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40、t 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
41、 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).A 210/A 210M 02 (2007)3Copyright by ASTM Intl (all rights reserved); Wed Oct 29 03:27:49 EST 2008Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.
