1、Designation: A1076/A1076M 12A1076/A1076M 13Standard Specification forCold Formed Carbon Structural Steel Tubing Made fromMetallic Precoated Sheet Steel1This standard is issued under the fixed designation A1076/A1076M; the number immediately following the designation indicates theyear of original ado
2、ption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope Scope*1.1 This specification covers round, square, rectangular, and specia
3、l shape, electric-resistance-welded structural tubing producedfrom precoated sheet steel with the following coatings on both sides: zinc (galvanized) or 55% aluminum-zinc alloy. alloy orzinc-5 % aluminum alloy-coated.This product is intended for applications requiring minimum mechanical properties a
4、nd corrosionresistance of both exterior and interior surfaces.1.2 This specification is applicable to orders in either inch-pound units (as A1076) or SI units (as A1076M). Within the text,SI units are shown in brackets. The values stated in either SI units or inch-pound units are to be regarded sepa
5、rately as standard.The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.Combining values from the two systems may result in non-conformance with the standard.1.3 This standard does not purport to address all of the safety conc
6、erns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A90/A90M Test Method for Weight Mass of Co
7、ating on Iron and Steel Articles with Zinc or Zinc-Alloy CoatingsA370 Test Methods and Definitions for Mechanical Testing of Steel ProductsA653/A653M Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by theHot-Dip ProcessA792/A792M Specification for Ste
8、el Sheet, 55 % Aluminum-Zinc Alloy-Coated by the Hot-Dip ProcessA875/A875M Specification for Steel Sheet, Zinc-5 % Aluminum Alloy-Coated by the Hot-Dip ProcessA902 Terminology Relating to Metallic Coated Steel ProductsA500/A500M Specification for Cold-Formed Welded and Seamless Carbon Steel Structur
9、al Tubing in Rounds and ShapesA924/A924M Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip ProcessB750 Specification for GALFAN (Zinc-5 % Aluminum-Mischmetal) Alloy in Ingot Form for Hot-Dip Coatings3. Terminology3.1 DefinitionsSee Terminology A902 for definition
10、s of general terminology relating to metallic-coated hot-dip products.3.2 Definitions of Terms Specific to This Standard:3.2.1 de-dimpled, adjthe condition of the end of tubing after removal of the protrusion or deformation created by the punchcut operation.3.2.1.1 DiscussionThe dimple is a protrusi
11、on that is displaced from the inside diameter and is unrelated to a shear burr.1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.09on Carbon Steel Tubular Products.Current edition appro
12、ved July 1, 2012Oct. 1, 2013. Published September 2012October 2013. Originally approved in 2012. Last previous edition approved in 2012 asA1076/A1076M12. DOI: 10.1520/A1076_A1076M-12.10.1520/A1076_A1076M-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer
13、Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the pre
14、vious version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Ch
15、anges section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.2.2 structural tubing, ntubing tension tested with reported test results.4. Product Size4.1 The standard covers products available in t
16、he following sizes:Product Wall Thickness,max Exterior Dimension,maxRound Tubing 0.25 in. 6.35 mm Diameter 5 in. 130 mmSquare,Rectangular, orSpecial Shapes0.25 in. 6.35 mm Periphery 16 in. 405 mm5. Classification5.1 The finished tube is available in the following designations:5.1.1 Round structural
17、tubing steel grade with minimum yield strength 33 ksi 230 MPa, 42 ksi 290 MPa, and 46 ksi 315MPa in the finished tube.5.1.2 Shaped structural tubing steel grade with minimum yield strength 39 ksi 270 MPa, 46 ksi 315 MPa, and 50 ksi 345MPa in the finished tube.5.1.3 The finished tube is available as
18、zinc-coated or 55% aluminum-zinc alloy-coated with a recommended minimum of 0.40oz/ftor zinc-5 % aluminum alloy-coated.2 120 g/m2 total both sides.6. Ordering Information6.1 The ordered wall thickness of the tubing shall be the total of the base metal and the metallic coating.6.2 Orders for product
19、to this specification shall include the following information, as necessary, to adequately describe thedesired product.6.2.1 Steel grade designation,6.2.2 Chemically treated or not chemically treated raw material,6.2.3 Coating designation,designation and type of coating,6.2.4 Organic or inorganic co
20、ating if required,6.2.5 Oiled or dry,6.2.6 End condition,6.2.6.1 Burrs removed if required,6.2.7 Mill cut or de-dimpled end condition,6.2.7.1 When the end finish is not specified, mill cut will be furnished,6.2.8 Dimensions (show outside diameter and wall thickness for round tubing), (outside dimens
21、ions and wall thickness forsquare, rectangle, or special shapes), and length,6.2.9 Quantity (length or weight),6.2.10 Mill certification (if required),6.2.11 End-use application, and6.2.12 Recoating of outside diameter weld and heat-affected area of coating, if required.7. Coating Properties7.1 Zinc
22、 Coating Weight Mass:7.1.1 Coating weight mass shall conform to the requirements as shown in Table 1 for the specific coating designation. Thethickness of the tube includes both the base metal and the coating.7.1.2 Use the following relationships to estimate the coating thickness from the coating we
23、ight mass:7.1.2.1 1 oz/ft2 coating weight = 1.7 mils coating thickness7.1.2.2 7.14 g/m2 coating mass = 1 m coating thickness7.2 55% Aluminum-Zinc Coating Weight Mass:7.2.1 Coating weight mass shall conform to the requirements as shown in Table 2 for the specific coating designation.7.2.2 Use the fol
24、lowing relationships to estimate the coating thickness from the coating weight mass:7.2.2.1 1 oz/ft2 coating weight = 3.2 mils coating thickness7.2.2.2 3.75 g/m2 coating mass = 1 m coating thickness7.3 Coating Weight To Coating Mass Conversion:7.3.1 1 oz/ft2 coating weight = 305.15 g/m2 coating mass
25、7.4 Coating Weight Mass Tests:7.4.1 Coating weight mass tests shall be performed in accordance with the requirements of Specification A924/A924M.7.4.2 The referee method to be used shall be Test Method A90/A90M.A1076/A1076M 1327. Coating Composition7.1 For tubing produced from precoated steel sheet,
26、 the composition of the coating shall comply with the applicablespecification.7.1.1 Specification A653/A653M Coating designation for galvanized steel sheet.7.1.2 Specification A792/A792M Coating designation for 55 % aluminum-zinc alloy coated steel sheet.7.1.3 Specification A875/A875M Coating design
27、ation for zinc-5 % aluminum alloy coated steel sheet.8. Chemical Composition8.1 Base Metal:8.1.1 The base metal shall be manufactured using the basic oxygen or electric furnace process.8.1.2 The heat analysis shall conform to the requirements of Table 31.9. Mechanical Properties of Finished Tube9.1
28、The precoated mechanical tubing shall conform to the mechanical properties of Tables 42 and 53.9.2 Tests for mechanical properties shall be conducted in accordance with the methods specified in Specification A924/A924Mexcept that the requirements of A370 for the preparation of tubing-test specimen s
29、hall apply.10. Flattening Test10.1 The integrity of the weld shall be determined in conjunction with the flattening test described in SpecificationA500/A500M. The flattening test shall be made on round structural tubing. A flattening test is not required for shaped structuraltubing.11. Oiling11.1 Wh
30、en specified, tubing shall have a protective coating applied before shipping to retard white rust of the metallic coatingon closely nested products and red rust on non-recoated outside diameter weld areas. Should the order specify shipment withouta protective coating, the lubricant incidental to man
31、ufacturing will remain and the purchaser will assume responsibility for rust intransit and storage.12. Other Requirements12.1 The requirements for the following can be found in Specification A500/A500M:12.1.1 Permissible Variations in Dimensions,12.1.2 Special Shape Structural Tubing,12.1.3 Number o
32、f Tests,12.1.4 Retests,12.1.5 Test Methods,12.1.6 Inspection,12.1.7 Rejection,12.1.8 Certification,12.1.9 Product Marking,12.1.10 Packing, Marking, and Loading, and12.1.11 Government Procurement.TABLE 31 Chemical RequirementsA,B,CComposition, %Heat Analysis Element, max (unless otherwise shown)Desig
33、nation Carbon Manganese Phosphorus Sulfur Si Al, min Cu Ni Cr Mo V Cb TiRound Grade 332300.15 1.35 0.04 0.04 . . . . . . 0.25 0.20 0.15 0.06 0.008 0.008 0.03Round Grade 422900.18 1.35 0.04 0.04 . . . . . . 0.25 0.20 0.15 0.06 0.008 0.008 0.03Round Grade 463150.25 1.35 0.04 0.04 . . . . . . 0.25 0.20
34、 0.15 0.06 0.008 0.008 0.03Shaped Grade 392700.15 1.35 0.04 0.04 . . . . . . 0.25 0.20 0.15 0.06 0.008 0.008 0.03Shaped Grade 463150.18 1.35 0.04 0.04 . . . . . . 0.25 0.20 0.15 0.06 0.008 0.008 0.03Shaped Grade 503450.25 1.35 0.04 0.04 . . . . . . 0.25 0.20 0.15 0.06 0.008 0.008 0.03A Where an elli
35、psis (. . .) appears in this table, there is no requirement, but the analysis shall be reported.B Si may be added as a strengthening element.C Columbium and Vanadium may be added singly or in combination for strengthening. When used, the maximum values in the table may be exceeded.A1076/A1076M 13313
36、. Keywords13.1 55% aluminum-zinc alloy-coated; structural tubing; tubing; zinc coatedcoated; zinc-5 % aluminum alloy-coatedSUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A1076/A1076M12) that may impact the use of this standard. (
37、Approved October 1, 2013.)(1) Revised scope to include zinc-5 % aluminum alloy-coated.(2) Added reference to Specifications A653/A653M, A792/A792M, A875/A875M, and B750(3) Removed tables containing coating weight designations for zinc (galvanized) and 55 %.(4) Renumbered tables as a result of the de
38、leted tables.(5) Updated Keywords section with zinc-5 % aluminum alloy-coated.(6) 6.2.3 Added coating type to ordering information.(7) 5.1.3 Removed minimum coating requirement.(8) Restructured Section 7TABLE 42 Mechanical Requirements of Round Structural TubingDesignation Yield Strength,min, ksi MP
39、a Tensile Strength,min, ksi MPaElongation in2 in. 50 mm,min, %Grade 33 230 33 230 45 310 25AGrade 42 290 42 290 58 400 23BGrade 46 315 46 315 62 425 21CA Applies to specified wall thicknesses (t) of 0.120 in 3.05 mm and over. For wallthicknesses under 0.120 in 3.05 mm, the minimum elongation shall b
40、e calculatedusing this formula: Elongation, in = 56t + 17.5, rounded to the nearest percent.B Applies to specified wall thicknesses of 0.180 in 4.57 mm and over. For wallthicknesses under 0.180 in 4.57 mm, the minimum elongation shall be calculatedusing this formula: Elongation, in = 61t + 12, round
41、ed to the nearest percent.C Applies to specified wall thicknesses of 0.120 in 3.05 mm and over. For wallthicknesses under 0.120 in 3.05 mm, the minimum elongation shall be subject toagreement between the manufacturer and purchaser.TABLE 53 Mechanical Requirements of Shaped Structural TubingDesignati
42、on Yield Strength,min, ksi MPa Tensile Strength,min, ksi MPaElongation in2 in. 50 mm,min, %Grade 39 270 39 270 45 310 25AGrade 46 315 46 315 58 400 23BGrade 50 345 50 345 62 425 21CA Applies to specified wall thicknesses (t) of 0.120 in 3.05 mm and over. For wallthicknesses under 0.120 in 3.05 mm, t
43、he minimum elongation shall be calculatedusing this formula: Elongation, in = 56t + 17.5, rounded to the nearest percent.B Applies to specified wall thicknesses of 0.180 in 4.57 mm and over. For wallthicknesses under 0.180 in 4.57 mm, the minimum elongation shall be calculatedusing this formula: Elo
44、ngation, in = 61t + 12, rounded to the nearest percent.C Applies to specified wall thicknesses of 0.120 in 3.05 mm and over. For wallthicknesses under 0.120 in 3.05 mm, the minimum elongation shall be subject toagreement between the manufacturer and purchaser.A1076/A1076M 134ASTM International takes
45、 no position respecting the 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 resp
46、onsibility.This standard 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
47、 to ASTM International Headquarters. 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 a
48、ddress 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 the aboveaddress or at 610-832-9585 (phone
49、), 610-832-9555 (fax), or 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 1 Weight Mass of Zinc Coating RequirementsANOTE 1Use the information provided in 7.1.2 to obtain the approximate coating thickness from the coating weight mass.Minimum RequirementBTriple-Spot Test Single-Spot TestInch-P
