1、Designation: A595/A595M 11Standard 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 Department of Defense.1. Scope*1.1 This specific
3、ation 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.1.2 This tubing is produced in welded sizes in a range ofdiameters from 238
4、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 units or inch-pound unitsare to be regarded separately as standard. The values stated ineach system may not be exa
5、ct equivalents; therefore, eachsystem shall be used indepedently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.2. Referenced Documents2.1 ASTM Standards:2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA588/A588M Specificat
6、ion 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-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, withImproved Atmospheric Corrosion ResistanceA751 Test Methods, Practice
7、s, and Terminology for Chemi-cal Analysis of Steel ProductsG101 Guide for Estimating the Atmospheric CorrosionResistance of Low-Alloy Steels3. Ordering Information3.1 The inquiry and order should indicate the following:3.1.1 Large and small diameters (in.) mm, length (ft) m,wall thickness (in.) mm,
8、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 Required date of shipment or date of receipt, and4.2 Special shipping instructions, if any.5. Manufacture5.1 Tube st
9、eel 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.5.2 Tubes shall be made from trapezoidal sheet or plate thatis preformed and then seam welded. Tubes shall be brought
10、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 and 3. Chemical analysis shallbe in accordance with Test Methods, Practices, and Terminol-ogy A751.6.2 For Grade C ma
11、terial, 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.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct res
12、ponsibility of SubcommitteeA01.09 on Carbon Steel Tubular Products.Current edition approved Oct. 1, 2011. Published November 2011. Originallyapproved in 1969. Last previous edition approved in 2006 as A595 06. DOI:10.1520/A0595_A0595M-11.2For referenced ASTM standards, visit the ASTM website, www.as
13、tm.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.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO
14、Box C700, West Conshohocken, PA 19428-2959, United States.TABLE 1 Chemical RequirementsComposition by Heat Analysis, %ElementsGrade A Grade B Grade CCarbon Steel HSLA SS HSLAS Cl1 HSLAS Cl2 Carbon Steel HSLA SS HSLAS Cl1 HSLAS Cl2 A 606 A 588/A A 588/B A 588/C A 588/KCarbon 0.150.25 0.25 max 0.23 ma
15、x 0.15 max 0.150.25 0.25 max 0.26 max 0.15 max 0.22 max 0.19 max 0.20 max 0.15 max 0.17 maxManganese 0.300.90 1.35 max 1.35 max 1.35 max 0.401.35 1.35 max 1.50 max 1.50 max 1.25 max 0.801.25 0.751.35 0.801.35 0.501.20Phosporous 0.035 max 0.035 max 0.04 max 0.04 max 0.035 max 0.035 max 0.04 max 0.04
16、maxA0.04 max 0.04 max 0.04 max 0.04 maxSulfur 0.035 max 0.04 max 0.04 max 0.04 max 0.035 max 0.04 max 0.04 max 0.04 max 0.04 max 0.05 max 0.05 max 0.05 max 0.05 maxSilicon 0.040 maxB0.040 maxB0.040 maxB0.040 maxB0.040 maxB0.040 maxB0.040 maxB0.040 maxBA0.300.65 0.150.50 0.150.40 0.250.50CopperC,D. 0
17、.20 max 0.20 max 0.20 max . 0.20 max 0.20 max 0.20 maxA0.250.40 0.200.40 0.200.50 0.300.50ChromiumC,E. 0.15 max 0.15 max 0.15 max . 0.15 max 0.15 max 0.15 maxA0.400.65 0.400.70 0.300.50 0.400.70NickelC. 0.20 max 0.20 max 0.20 max . 0.20 max 0.20 max 0.20 maxA0.40 max 0.50 max 0.250.50 0.40 maxMolybd
18、enumC,E. 0.06 max 0.06 max 0.06 max . 0.06 max 0.06 max 0.06 max .AAA0.10 maxVanadiumF. 0.008 max 0.01 min 0.01 min . 0.008 max 0.01 min 0.01 min . 0.020.10 0.010.10 0.010.10AColumbiumF. 0.008 max 0.005 min 0.005 min . 0.008 max 0.005 min 0.005 min .AAA0.0050.05Nitrogen .AAA.AAA. . . . .AluminumB A
19、A. . . . .AThere is no limit; however, the analysis shall be reported.BSilicon or silicon in combination with aluminum must be sufficient to ensure uniform mechanical properties. Their sum shall be greater than or equal to 0.020 %.CFor HSLA steels the sum of copper, nickel, chromium, and molybdenum
20、shall not exceed 0.50 % on heat analysis. When one of these elements are specified by the purchaser, the sum does not apply, in which caseonly the individual limits of the remaining elements shall apply.DFor HSLA steels when copper is specified, the copper limit is a minimum requirement. When copper
21、 steel is not specified, the copper limit is a maximum requirement.EFor SS steel the sum of chromium and molybdenum shall not exceed 0.16 % on heat analysis. When one or more of these elements are specified by the purchaser, the sum does not apply, in which case the individuallimit on the remaining
22、unspecified element shall apply.FFor HSLA steels vanadium and columbium minimums may be satisfied separately or by combining their values, in which event the sum shall exceed the combined minimums.A595/A595M112NOTE 1The user is cautioned that the Guide G101 predictive equationfor calculation of an a
23、tmospheric 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 issatisfactory to the purchaser.7. Mechanical Properties7.1 Tension Test:7.1
24、.1 RequirementsThe 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 p
25、roduced from 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 sha
26、ll betaken 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 gage length of thespecimen or to a total extension of 0.5
27、% of the gage 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
28、basic material.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 toler
29、ance for 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 re
30、quirements 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
31、of this 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 Injurio
32、us defects 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 Excessiv
33、e projected 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
34、inspected 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 th
35、emanufacturer 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 a
36、nd severity 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 test
37、ed in accordance 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 di
38、ameter, 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 s
39、teel tube; 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 113TABLE 3 Chemical RequirementsComposition by Product Analysis, %Elements
40、 Grade A Grade B Grade CCarbon Steel HSLA SS HSLAS Cl1 HSLAS Cl2 Carbon Steel HSLA SS HSLAS Cl1 HSLAS Cl2 A 606 A 588/A A 588/B A 588/C A 588/KCarbon 0.120.29 0.29 max 0.27 max 0.18 max 0.120.29 0.29 max 0.29 max 0.18 max 0.26 max 0.23 max 0.24 max 0.18 max 0.21 maxManganese 0.260.94 1.40 max 1.40 m
41、ax 1.40 max 0.351.40 1.40 max 1.40 max 1.40 max 1.3 max 0.721.35 0.671.45 0.721.45 0.421.30Phosphorous 0.045 max 0.045 max 0.05 max 0.05 max 0.045 max 0.045 max 0.05 max 0.05 maxA0.05 max 0.05 max 0.05 max 0.05 maxSulfur 0.045 max 0.05 max 0.05 max 0.05 max 0.045 max 0.05 max 0.05 max 0.05 max 0.06
42、max 0.06 max 0.06 max 0.06 max 0.06 maxSilicon 0.040 maxB0.040 maxB0.040 maxB0.040 maxB0.040 maxB0.040 maxB0.040 maxB0.040 maxBA0.250.70 0.150.60 0.130.43 0.200.55Copper . 0.22 max 0.22 max 0.22 max . 0.22 max 0.22 max 0.22 maxA0.220.43 0.170.43 0.170.53 0.270.53Chromium . 0.19 max 0.19 max 0.19 max
43、 . 0.19 max 0.19 max 0.19 maxA0.360.69 0.360.74 0.260.54 0.360.74Nickel . 0.23 max 0.23 max 0.23 max . 0.23 max 0.23 max 0.23 maxA0.43 max 0.53 max 0.220.53 0.43 maxMolybdenum . 0.07 max 0.07 max 0.07 max . 0.07 max 0.07 max 0.07 max .AAA0.11 maxVanadiumC. 0.018 max . . . 0.018 max . . . 0.010.11 0.
44、000.11 0.000.11AColumbiumC. 0.018 max . . . 0.018 max . . .AAA0.055 maxNitrogen .AAA.AAA. . . . .AluminumB A A. . . . .AThere is no limit; however, the analysis shall be reported.BSilicon or silicon in combination with aluminum must be sufficient to ensure uniform mechanical properties. Their sum sh
45、all be greater than or equal to 0.020 %.CFor HSLA steels vanadium and columbium minimums may be satisfied separately or by combining their values, in which event the sum shall exceed the combined minimums.A595/A595M114SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to
46、 this specification since the last issue,A59506, that may impact the use of this specification. (Approved October 1, 2011)(1) Revised C requirements in Table 1 and C, P, S, Si, V, andCb in Table 3.ASTM International takes no position respecting the validity of any patent rights asserted in connectio
47、n 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 is subject to revision at any time by the responsible
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49、eration 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 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
