1、Designation: A192/A192M 17Standard Specification forSeamless Carbon Steel Boiler Tubes for High-PressureService1This standard is issued under the fixed designation A192/A192M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the yea
2、r 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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification2covers
3、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, inminimum wall thickne
4、ss. 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 either inch-pound
5、 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 in nonconformance
6、 with the specifi-cation. The inch-pound units shall apply unless the “M”designation of this specification is specified in the order.1.5 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles f
7、or theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:3A450/A450M Specification for General Requirements forCarbon and Low Alloy Steel Tubes3. Ordering Info
8、rmation3.1 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 (outsi
9、de diameter and minimum wall thickness),3.1.5 Length (specific or random),3.1.6 Optional requirements (Sections 8.1 and 10.4),3.1.7 Test report required (see section on Certification ofSpecification A450/A450M),3.1.8 Specification designation, and3.1.9 Special requirements.4. General Requirements4.1
10、 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 Tubes shall be made by the seamless process and shallbe either hot-finished or cold-finished, as specified.
11、6. Heat Treatment6.1 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.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is th
12、e direct responsibility of SubcommitteeA01.09 on Carbon Steel Tubular Products.Current edition approved Nov. 1, 2017. Published November 2017. Originallyapproved in 1936. Last previous edition approved in 2012 as A192/A192M 02(2012). DOI: 10.1520/A0192_A0192M-17.2For ASME Boiler and Pressure Vessel
13、Code applications see related Specifi-cation SA-192 in Section II of that Code.3For referenced ASTM standards, 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 o
14、nthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on st
15、andardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.17. Chemical Composition7.1 The steel shall conform to the following requirements asto
16、chemical composition:Carbon, % 0.060.18Manganese, % 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
17、 on the purchase order, a product analy-sis shall be made by the supplier from one tube per 100 piecesfor sizes over 3 in. 76.2 mm and one tube per 250 pieces forsizes 3 in. 76.2 mm and under; or when tubes are identifiedby heat, one tube per heat shall be analyzed. The chemicalcomposition thus dete
18、rmined 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; otherwise all remaining material in the heat or
19、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 tubes for sizes 3 in. 76.2 mm and underand of 100 tub
20、es 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 than 0.200 in.wall thickness) 5.1 mm in wall thick
21、ness)137 HBW 77 HRBW10. 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-mens from each end of two tubes selected from
22、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 tubes prior to cutting, of the samenominal diam
23、eter 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 final heat treatment is in a continuousfurnace
24、, 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, a nondestruc-tive test may be used when speci
25、fied 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 necessary for applicationwithout developing defects.
26、12. Product Marking12.1 In addition to the marking prescribed in SpecificationA450/A450M, the marking shall indicate whether the tube ishot finished or cold finished.13. Keywords13.1 boiler tubes; seamless steel tube; steel tube-carbonEXPLANATORY NOTESNOTE 1For purposes of design, the following tens
27、ile properties maybe assumed:Tensile strength, min, ksi MPa 47 325Yield strength, min, ksi MPa 26 180Elongation in 2 in. or 50 mm, min, % 35A192/A192M 172SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this specification since the last issue(A192/A192M 02 (2012) th
28、at may impact the use of this standard. (Approved Nov. 1, 2017.)(1) Hardness values are now reported according to currentA370 requirements.(2) The option identified in 10.4 of a nondestructive test foreach tube is now listed in the Ordering Information.ASTM International takes no position respecting
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