1、Designation: A595/A595M 14Standard Specification forSteel Tubes, Low-Carbon or High-Strength Low-Alloy,Tapered for Structural Use1This standard is issued under the fixed designation A595/A595M; the number immediately following the designation indicates the yearof original adoption or, in the case of
2、 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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This spe
3、cification covers three grades of seam-welded,round, tapered steel tubes for structural use. GradesAand B areof low-carbon steel or high-strength low-alloy steel composi-tion and Grade C is of weather-resistant steel composition.1.1.1 The product may be modified from its round crosssection into othe
4、r shapes without subsequent retesting.1.2 This tubing is produced in welded sizes in a range ofdiameters from 238 to 30 in. 60 to 762 mm inclusive. Wallthicknesses range from 0.1046 to 0.375 in. 2.66 to 9.53 mm.Tapers are subject to agreement with the manufacturer.1.3 The values stated in either SI
5、units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exact equivalents; therefore, eachsystem shall be used indepedently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.2. Referenced Documents
6、2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA588/A588M Specification for High-Strength Low-AlloyStructural Steel, up to 50 ksi 345 MPa Minimum YieldPoint, with Atmospheric Corrosion ResistanceA606 Specification for Steel, Sheet and Strip, High-Strengt
7、h, Low-Alloy, Hot-Rolled and Cold-Rolled, withImproved Atmospheric Corrosion ResistanceA751 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 The inquiry and o
8、rder should indicate the following:3.1.1 Large and small diameters (in.) mm, length (ft) m,wall thickness (in.) mm, taper (in./ft) mm/m;3.1.2 (see Table 1 and Table 2);3.1.3 Extra test material requirements, if any; and3.1.4 Supplementary requirements, if any.4. General Requirements for Delivery4.1
9、Required date of shipment or date of receipt, and4.2 Special shipping instructions, if any.5. Manufacture5.1 Tube steel shall be hot-rolled aluminum-semikilled orfine-grained killed sheet or plate manufactured by one or moreof the following processes: open-hearth, basic-oxygen, orelectric-furnace.5.
10、2 Tubes shall be made from trapezoidal sheet or plate thatis preformed and then seam welded. Tubes shall be brought tofinal size and properties by roll compressing cold on ahardened mandrel.6. Chemical Composition6.1 Steel shall conform to the requirements for chemicalcomposition given in Tables 1 a
11、nd 3. Chemical analysis shallbe in accordance with Test Methods, Practices, and Terminol-ogy A751.6.2 For Grade C material, the atmospheric corrosion-resistance index, calculated on the basis of the chemicalcomposition of the steel, as described in Guide G101, shall be6.0 or higher.NOTE 1The user is
12、 cautioned that the Guide G101 predictive equationfor calculation of an atmospheric corrosion-resistance index has beenverified only for the composition limits stated in that guide.6.3 When required by the purchase order, the manufacturershall supply guidance concerning corrosion resistance that iss
13、atisfactory to the purchaser.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 May 1, 2014. Published May 2014. Originallyapp
14、roved in 1969. Last previous edition approved in 2011 as A595/A595M 11.DOI: 10.1520/A0595_A0595M-14.2For 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 Do
15、cument Summary page onthe 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 States1TABLE1ChemicalRequirementsCompositionbyHeatAnalysis,%ElementsGradeAGradeBGradeCCar
16、bon SteelHSLASSHSLASCl1HSLASCl2CarbonSteelHSLASSHSLASCl1HSLASCl2A606A588/AA588/BA588/CA588/KCarbon0.150.250.25max0.23max0.15max0.150.250.25max0.26max0.15max0.22max0.19max0.20max0.15max0.17maxManganese0.300.901.35max1.35max1.35max0.401.351.35max1.50max1.50max1.25max0.801.250.751.350.801.350.501.20Pho
17、sphorous0.035max0.035max0.04max0.04max0.035max0.035max0.04max0.04maxA0.04max0.04max0.04max0.04maxSulfur0.035max0.04max0.04max0.04max0.035max0.04max0.04max0.04max0.04max0.05max0.05max0.05max0.05maxSilicon0.060maxB0.060maxB0.060maxB0.060maxB0.060maxB0.060maxB0.060maxB0.060maxBA0.300.650.150.500.150.40
18、0.250.50CopperC,D.0.20max0.20max0.20max.0.20max0.20max0.20maxA0.250.400.200.400.200.500.300.50ChromiumC,E.0.15max0.15max0.15max.0.15max0.15max0.15maxA0.400.650.400.700.300.500.400.70NickelC.0.20max0.20max0.20max.0.20max0.20max0.20maxA0.40max0.50max0.250.500.40maxMolybdenumC,E.0.06max0.06max0.06max.0
19、.06max0.06max0.06max.AAA0.10maxVanadiumF.0.008max0.01min0.01min.0.008max0.01min0.01min.0.020.100.010.100.010.10AColumbiumF.0.008max0.005min0.005min.0.008max0.005min0.005min.AAA0.0050.05Nitrogen.AAA.AAA.AluminumBAAAAAAAA.AThereisnolimit;however,theanalysisshallbereported.BSiliconorsiliconincombinatio
20、nwithaluminummustbesufficienttoensureuniformmechanicalproperties.Theirsumshallbegreaterthanorequalto0.020%.CForHSLAsteelsthesumofcopper,nickel,chromium,andmolybdenumshallnotexceed0.50%onheatanalysis.Whenoneoftheseelementsarespecifiedbythepurchaser,thesumdoesnotapply,inwhichcaseonlytheindividuallimit
21、softheremainingelementsshallapply.DForHSLAsteelswhencopperisspecified,thecopperlimitisaminimumrequirement.Whencoppersteelisnotspecified,thecopperlimitisamaximumrequirement.EForSSsteelthesumofchromiumandmolybdenumshallnotexceed0.16%onheatanalysis.Whenoneormoreoftheseelementsarespecifiedbythepurchaser
22、,thesumdoesnotapply,inwhichcasetheindividuallimitontheremainingunspecifiedelementshallapply.FForHSLAsteelsvanadiumandcolumbiumminimumsmaybesatisfiedseparatelyorbycombiningtheirvalues,inwhicheventthesumshallexceedthecombinedminimums.A595/A595M 1427. Mechanical Properties7.1 Tension Test:7.1.1 Require
23、mentsThe material, as represented by thetest specimens, shall conform to the requirements as to tensileproperties given in Table 2.7.1.2 Number of Tests:7.1.2.1 For coilOne or more tension tests as defined inTable 2 shall be made from the large end of one tube on each100, or fewer, tubes produced fr
24、om each coil in the applicablethickness class (see Table 4).7.1.2.2 For plateOne or more tension tests as defined inTable 2 shall be made from the large end of one tube on a lotproduced from a single heat of plate product of uniformthickness.7.1.3 Test Locations and OrientationsSamples shall betaken
25、 at least 1 in. 25 mm from the longitudinal seam weld.7.1.4 Test Method:7.1.4.1 Tension tests shall be made in accordance with TestMethods and Definitions A370. The yield strength correspond-ing to a permanent offset of 0.2 % of the gauge length of thespecimen or to a total extension of 0.5 % of the
26、 gauge lengthunder load shall be determined in accordance with TestMethods and Definitions A370.7.1.4.2 The ultimate tensile strength shall be determined inaccordance with the Tensile Strength of Test Methods andDefinitions A370.7.1.5 Each test shall be identified as to the heat number ofthe basic m
27、aterial.8. Dimensions and Tolerances8.1 LengthThe length shall be the specified length with atolerance of +34 in. 19 mm or 14 in. 6 mm.8.2 DiameterThe outside diameter shall conform to thespecified dimensions with a tolerance of 6116 in. 2 mm asmeasured by girthing.8.3 Wall ThicknessThe tolerance fo
28、r wall thickness exclu-sive of the weld area shall be +10 % or 5 % of the nominalwall thickness specified.8.4 StraightnessThe permissible variation for straightnessof the tapered tube shall be 0.2 % or less of the total length.9. Rework and Retreatment9.1 In case any test fails to meet the requireme
29、nts of Section7, the manufacturer may elect to retreat, rework, or otherwiseeliminate the condition responsible for failure to meet thespecified requirements. Thereafter the material remaining fromthe respective class originally represented may be tested andshall comply with all requirements of this
30、 specification.9.2 Imperfections in the outer surface, such as cracks, scabs,or excessive weld projections, shall be classed as injuriousdefects when their depth or projection exceeds 15 % of the wallthickness or when the imperfections materially affect theappearance of the tube.9.2.1 Injurious defe
31、cts having a depth not in excess of 3313% of the specified wall thickness may be repaired by weldingsubject to the following conditions: (1) scabs shall be com-pletely removed by chipping or grinding to sound metal, and(2) the repair weld shall be made using suitable electrodes.9.2.2 Excessive proje
32、cted weld metal shall be removed toproduce a commercial finish.10. Inspection10.1 Inspection of material shall be made as agreed uponbetween the purchaser and the seller as part of the purchasecontract.11. Rejection and Rehearing11.1 Each length of tubing received from the manufacturermay be inspect
33、ed by the purchaser, and if it does not meet therequirements of this specification based on the inspection andtest method as outlined in the specification, the length may berejected and the manufacturer shall be notified. Disposition ofrejected tubing shall be a matter of agreement between themanufa
34、cturer and the purchaser.11.2 Tubing found in fabrication or in installation to beunsuitable for the intended use, under the scope and require-ments of this specification, may be set aside and the manufac-turer notified. Such tubing shall be subject to mutual investi-gation as to the nature and seve
35、rity of the deficiency and theforming or installation, or both, conditions involved. Disposi-tion shall be a matter for agreement.12. Certification and Reports12.1 Upon request of the purchaser in the contract or order,a manufacturers certification that the material was manufac-tured and tested in a
36、ccordance with this specification togetherwith a report of the chemical and tension tests shall befurnished.13. Product Marking13.1 Each tapered tube shall be legibly marked by rolling,die stamping, ink printing, or paint stenciling to show thefollowing information: thickness, taper, large diameter,
37、 smalldiameter, length, and the specification number, Grade A, B, orC.13.2 Bar CodingIn addition to the requirements in 13.1,bar coding is acceptable as a supplemental identificationmethod. The purchaser may specify in the order a specific barcoding system to be used.14. Keywords14.1 carbon steel tu
38、be; steel tubeTABLE 2 Tensile RequirementsGrade A Grade B Grade CYield point, min, ksi MPa 55 380 60 410 60 410Ultimate tensile strength, min,ksi MPa65 450 70 480 70 480Elongation in 2 in. 50 mm,min %23 21 21A595/A595M 143TABLE3ChemicalRequirementsCompositionbyProductAnalysis,%ElementsGradeAGradeBGr
39、adeCCarbonSteelHSLASSHSLASCl1HSLASCl2CarbonSteelHSLASSHSLASCl1HSLASCl2A606A588/AA588/BA588/CA588/KCarbon0.120.290.29max0.27max0.18max0.120.290.29max0.29max0.18max0.26max0.23max0.24max0.18max0.21maxManganese0.260.941.40max1.40max1.40max0.351.401.40max1.40max1.40max1.3max0.721.350.671.450.721.450.421.
40、30Phosphorous0.045max0.045max0.05max0.05max0.045max0.045max0.05max0.05maxA0.05max0.05max0.05max0.05maxSulfur0.045max0.05max0.05max0.05max0.045max0.05max0.05max0.05max0.06max0.06max0.06max0.06max0.06maxSilicon0.060maxB0.060maxB0.060maxB0.060maxB0.060maxB0.060maxB0.060maxB0.060maxBA0.250.700.150.600.1
41、30.430.200.55Copper.0.22max0.22max0.22max.0.22max0.22max0.22maxA0.220.430.170.430.170.530.270.53Chromium.0.19max0.19max0.19max.0.19max0.19max0.19maxA0.360.690.360.740.260.540.360.74Nickel.0.23max0.23max0.23max.0.23max0.23max0.23maxA0.43max0.53max0.220.530.43maxMolybdenum.0.07max0.07max0.07max.0.07ma
42、x0.07max0.07max.AAA0.11maxVanadiumC.0.018max.0.018max.0.010.110.000.110.000.11AColumbiumC.0.018max.0.018max.AAA0.055maxNitrogen.AAA.AAA.AluminumBAAAAAAAA.AThereisnolimit;however,theanalysisshallbereported.BSiliconorsiliconincombinationwithaluminummustbesufficienttoensureuniformmechanicalproperties.T
43、heirsumshallbegreaterthanorequalto0.020%.CForHSLAsteelsvanadiumandcolumbiumminimumsmaybesatisfiedseparatelyorbycombiningtheirvalues,inwhicheventthesumshallexceedthecombinedminimums.A595/A595M 144SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this specification sin
44、ce the last issue,A59511, that may impact the use of this specification. (Approved May 1, 2014)(1) Added 1.1.1 to the Scope recognized shapes other thanround.(2) Revised the maximum allowable silicon to 0.06 % compat-ible with revised AASHTO guidance.ASTM International takes no position respecting t
45、he validity of any patent rights asserted in connection with any 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
46、is subject to revision at any time by the responsible technical 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 H
47、eadquarters. Your comments will receive careful consideration 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
48、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 (phone), 610-832-9555 (fax), o
49、r serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).TABLE 4 Thickness ClassClassThicknessin. mm1 0.1046 through 0.140 2.66 through 3.562 0.141 through 0.190 3.58 through 4.833 0.191 through 0.280 4.85 through 7.114 0.281 through 0.375 7.14 through 9.53A595/A595M 145
