1、Designation: A 192/A 192M 02 (Reapproved 2007)Standard Specification forSeamless Carbon Steel Boiler Tubes for High-PressureService1This standard is issued under the fixed designationA 192/A 192M; the number immediately following the designation indicates the yearof original adoption or, in the case
2、 of 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.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This speci
3、fication2covers minimum-wall-thickness,seamless carbon steel boiler and superheater tubes for high-pressure service.1.2 The tubing sizes and thicknesses usually furnished tothis specification are12 in. to 7 in. 12.7 to 177.8 mm outsidediameter and 0.085 to 1.000 in. 2.2 to 25.4 mm, inclusive, inmini
4、mum 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 inside diameter or 0.015 in.0.4 mm thickness.1.4 The values stated in e
5、ither 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 from thetwo systems may result i
6、n 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 forCarbon and Low Alloy Steel Tubes3. Ordering Informati
7、on3.1 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 Manufacture (hot-finished or cold-finished),3.1.4 Size (outside di
8、ameter and minimum wall thickness),3.1.5 Length (specific or random),3.1.6 Optional requirements (Section 8),3.1.7 Test report required (see section on Certification ofSpecification A 450/A 450M),3.1.8 Specification designation, and3.1.9 Special requirements.4. General Requirements4.1 Material furni
9、shed 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 Tubes shall be made by the seamless process and shallbe either hot-finished or cold-finished, as specified.6. Heat Treatm
10、ent6.1 Hot-finished tubes need not be heat treated. Cold-finished tubes shall be heat treated after the final cold-finishingat a temperature of 1200F 650C or higher.7. Chemical Composition7.1 The steel shall conform to the following requirements asto chemical composition:Carbon, % 0.060.18Manganese,
11、 % 0.270.63Phosphorus, max, % 0.035Sulfur, max, % 0.035Silicon, max, % 0.257.2 Supplying an alloy grade of steel that specificallyrequires the addition of any element other than those listed in7.1 is not permitted.8. Product Analysis8.1 When requested on the purchase order, a product analy-sis shall
12、 be made by the supplier from one tube per 100 piecesfor sizes over 3 in. 76.2 mm and one tube per 250 pieces for1This 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 Tubu
13、lar Products.Current edition approved Nov. 1, 2007. Published January 2008. Originallyapproved in 1936. Last previous edition approved in 2002 as A 192/A 192M 02.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-192 in Section II of that Code.3For referenced ASTM s
14、tandards, 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocke
15、n, PA 19428-2959, United States.Copyright by ASTM Intl (all rights reserved); Wed Oct 29 03:34:24 EST 2008Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.sizes 3 in. 76.2 mm and under; or when tubes are identifiedby heat, one tube per heat sha
16、ll be analyzed. The chemicalcomposition thus determined shall conform to the requirementsspecified.8.2 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;
17、 otherwise all remaining material in the heat or lot(see Note 1) shall be rejected or, at the option of the producer,each billet or tube may be individually tested for acceptance.Billets or tubes which do not meet the requirements of thespecification shall be rejected.NOTE 1Alot consists of 250 tube
18、s for sizes 3 in. 76.2 mm and underand of 100 tubes for sizes over 3 in. 76.2 mm, prior to cutting to length.9. Hardness Requirements9.1 The tubes shall have a hardness number not exceedingthe following:Brinell Hardness Number (Tubes Rockwell Hardness Number0.200 in. 5.1 mm and over in (Tubes less t
19、han 0.200 in.wall thickness) 5.1 mm in wall thickness)137 HB 77 HRB10. Mechanical Tests Required10.1 Flattening TestOne flattening test shall be made onspecimens from each end of two tubes selected from each lot(see Note 1) or fraction thereof.10.2 Flaring TestOne flaring test shall be made on speci
20、-mens from each end of two tubes selected from each lot (seeNote 1) or fraction thereof. These tubes shall be selected apartfrom those used for the flattening test.10.3 Hardness TestBrinell or Rockwell hardness testsshall be made on specimens from two tubes from each lot. Theterm lot applies to all
21、tubes prior to cutting, of the samenominal diameter and wall thickness which are produced fromthe same heat of steel. When final heat treatment is in abatch-type furnace, a lot shall include only those tubes of thesame size and the same heat which are heat treated in the samefurnace charge. When the
22、 final heat treatment is in a continuousfurnace, a lot shall include all tubes of the same size and heat,heat treated in the same furnace at the same temperature, timeat heat, and furnace speed.10.4 Hydrostatic TestEach tube shall be subjected to thehydrostatic pressure test, or instead of this test
23、, a nondestruc-tive test may be used when specified by the purchaser.11. Forming Operations11.1 Tubes when inserted in the boiler shall stand expandingand beading without showing cracks or flaws. Superheatertubes when properly manipulated shall stand all forging,welding, and bending operations neces
24、sary for applicationwithout developing defects.12. Product Marking12.1 In addition to the marking prescribed in SpecificationA 450/A 450M, the marking shall indicate whether the tube ishot finished or cold finished.13. Keywords13.1 boiler tubes; seamless steel tube; steel tube-carbonEXPLANATORY NOTE
25、SNOTE 1For purposes of design, the following tensile properties maybe assumed:Tensile strength, min, ksi MPa 47 325Yield strength, min, ksi MPa 26 180Elongation in 2 in. or 50 mm, min, % 35ASTM International takes no position respecting the validity of any patent rights asserted in connection with a
26、ny 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 subject to revision at any time by the responsible technica
27、l 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 Headquarters. Your comments will receive careful consideration
28、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 standard is copyrighted by ASTM International, 100 Barr Harbor
29、 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 192/A 192M 02 (2007)2Copyright by ASTM Intl (all rights reserved); Wed Oct 29 03:34:24 EST 2008Downloaded/printed byGuo Dehua (CNIS) pursuant to License Agreement. No further reproductions authorized.
