1、Designation:A423/A423M09(Reapproved 2014)Standard Specification forSeamless and Electric-Welded Low-Alloy Steel Tubes1This standard is issued under the fixed designation A423/A423M;the number immediately following the designation indicates the yearof original adoption or,in the case of revision,the
2、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 and electric-resistance welded,low-alloy steel tubesfor
3、pressure containing parts such as economizers or otherapplications where corrosion resistance is important.1.2 The tubing sizes and thicknesses usually furnished tothis specification are12to 5 in.12.7 to 127 mm in outsidediameter and 0.035 to 0.500 in.0.9 to 12.7 mm inclusive,inminimum wall thicknes
4、s.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 than14in.3.2 mm in inside diameter or 0.015in.0.4 mm in thickness.1.4 An optional supplementary requirement
5、is provided and,when desired,shall be so stated in the order.1.5 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.Within the text,theSI units are shown in brackets.The values stated in eachsystem may not be exact equivalents;therefore,each systemshall
6、 be used independently of the other.Combining valuesfrom the two systems may result in non-conformance with thestandard.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 Gen
7、eral Requirements forCarbon and Low Alloy Steel TubesE213 Practice for Ultrasonic Testing of Metal Pipe andTubingE273 Practice for Ultrasonic Testing of the Weld Zone ofWelded Pipe and Tubing3.Ordering Information3.1 Orders for material under this specification shall includethe following,as required
8、,to describe the desired materialadequately:3.1.1 Quantity(feet,metres,or number of lengths),3.1.2 Name of material(seamless or electric-resistance-welded tubes),3.1.3 Grade(Table 1),3.1.4 Manufacture(hot finished or cold finished),3.1.5 Size(outside diameter and minimum wall thickness),3.1.6 Length
9、(specific or random),3.1.7 Optional requirements(hydrostatic or electric test,13.7),3.1.8 Test report required(see Certification Section ofSpecification A450/A450M),3.1.9 Specification designation,and3.1.10 Special requirements and any supplementary require-ments selected.4.Manufacture4.1 Tubes made
10、 by the seamless process may be hot finishedor cold finished.5.Heat Treatment5.1 All tubes shall be normalized or given such heattreatment as may be necessary to conform to the requirementsof this specification.6.Chemical Composition6.1 The steel shall conform to the requirements as tochemical compo
11、sition prescribed in Table 1.7.Product Analysis7.1 An analysis of either one billet,one length of flat-rolledstock or one tube shall be made from each heat.The chemicalcomposition thus determined shall conform to the requirementsspecified.7.2 If the original test for product analysis fails,retests o
12、ftwo additional billets,lengths of flat-rolled stock,or tubes shallbe made.Both retests,for the elements in question shall meet1This 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 Car
13、bon Steel Tubular Products.Current edition approved March 1,2014.Published March 2014.Originallyapproved in 1958.Last previous edition approved in 2009 as A423/A423M 09.DOI:10.1520/A0423_A0423M-09R14.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-423 in Section
14、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 onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive
15、,PO Box C700,West Conshohocken,PA 19428-2959.United States1Copyright by ASTM Intl(all rights reserved);the requirements of the specification;otherwise all remainingmaterial in the heat or lot(Note 1)shall be rejected or,at theoption of the producer,each billet,length of flat-rolled stock ortube may
16、be individually tested for acceptance.Billets,lengthsof flat-rolled stock or tubes which do not meet the requirementsof the specification shall be rejected.NOTE1For flattening,flaring,and flange requirements,the term lotapplies to all tubes prior to cutting of the same nominal size and wallthickness that 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 from the same heat which are heat treated in
