1、Designation:A847/A847M14Standard Specification forCold-Formed Welded and Seamless High-Strength,Low-Alloy Structural Tubing with Improved AtmosphericCorrosion Resistance1This standard is issued under the fixed designation A847/A847M;the number immediately following the designation indicates the year
2、of original adoption or,in the case of revision,the 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.Scope*1.1 This specification covers cold-formed welded and seam-less hi
3、gh-strength,low-alloy round,square,rectangular,orspecial shaped structural tubing for welded,riveted,or boltedconstruction of bridges and buildings and for general structuralpurposes where high strength and enhanced atmospheric cor-rosion resistance are required(Note 1).The atmosphericcorrosion resi
4、stance of this steel in most environments issubstantially better than carbon steel with or without copperaddition(Note 2).When properly exposed to the atmosphere,this steel can be used bare(unpainted)for many applications.When this steel is used in welded construction,the weldingprocedure shall be s
5、uitable for the steel and the intendedservice.1.2 This tubing is produced in welded sizes with a maxi-mum periphery of 64 in.1626 mm and a maximum wall of0.625 in.15.9 mm,and in seamless with a maximumperiphery of 32 in.813 mm and a maximum wall of 0.500 in.12.7 mm.Tubing having other dimensions may
6、 be furnishedprovided such tubing complies with all other requirements ofthis specification.1.3 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 equival
7、ents;therefore,each systemshall be used independently of the other.Combining valuesfrom the two systems may result in non-conformance with thestandard.NOTE1Products manufactured to this specification may not besuitable for those applications where low temperature notch toughnessproperties may be imp
8、ortant,such as dynamically loaded elements inwelded structures,etc.NOTE2For methods of estimating the atmospheric corrosion resis-tance of low alloy steels,see Guide G101 or actual data.2.Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testingof Steel Product
9、sA700 Practices for Packaging,Marking,and Loading Meth-ods for Steel Products for Shipment(Withdrawn 2014)3A751 Test Methods,Practices,and Terminology for Chemi-cal Analysis of Steel ProductsG101 Guide for Estimating the Atmospheric Corrosion Re-sistance of Low-Alloy Steels3.Ordering Information3.1
10、Orders for material under this specification shouldinclude the following,as required,to describe the desiredmaterial adequately:3.1.1 ASTM specification number,3.1.2 Quantity(feet,metres,or number of lengths),3.1.3 Name of material(cold-formed tubing),3.1.4 Method of manufacture(welded or seamless),
11、3.1.5 Size(outside diameter and nominal wall thickness forround tubing and the outside dimensions and nominal wallthickness for square and rectangular tubing),3.1.6 Length(specific or random,see 10.3),3.1.7 End condition(see 14.2),3.1.8 Burr removal(see 14.2),3.1.9 Certification(see Section 17),3.1.
12、10 End use,and3.1.11 Special requirements.4.Process4.1 The steel shall be made by one or both of the followingprocesses:basic oxygen or electric furnace.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of
13、 SubcommitteeA01.09 on Carbon Steel Tubular Products.Current edition approved May 1,2014.Published May 2014.Originallyapproved in 1985.Last previous edition approved in 2012 as A847/A847M12.DOI:10.1520/A0847_A0847M-14.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM
14、Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standar
15、dCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1Copyright by ASTM Intl(all rights reserved);5.Manufacture5.1 The tubing shall be made by a welded or seamlessprocess.5.2 Welded tubing shall be made from flat-rolled steel bythe electric-res
16、istance welding or electric-fusion welding pro-cess.The longitudinal butt joint shall be welded across itsthickness in such a manner that the structural design strength ofthe tubing section is assured.The weld shall not be locatedwithin the radius of the corners of any shaped tube unlessspecified by the purchaser.5.2.1 Structural tubing welded by the electric-resistancemethod is normally furnished without removal of inside flash.5.3 The tubing may be stress relieved or annealed,as isconsidered n