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ASTM A1085 - A 1085M - 15.pdf

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ASTM A1085 - A 1085M - 15.pdf

Designation A1085/A1085M − 15Standard Specification forCold-Formed Welded Carbon Steel Hollow StructuralSections HSS1This standard is issued under the fixed designation A1085/A1085M; the number immediately following the designation indicates theyear of original adoption 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*1.1 This specification covers cold-formed welded carbonsteel hollow structural sections HSS for welded or boltedconstruction. These shapes are utilized in but not limited to thefollowing applications buildings, bridges, towers, cranes, signsupports and poles, off-shore production and drilling platforms,roll-over protective structures ROPS, falling object protectivestructures FOPS, and amusement rides.1.2 This HSS is produced in welded sizes with a peripheryof 88 in. [2235 mm] or less, and a specified nominal wallthickness of 0.148 in. [3.8 mm] or greater and 0.875 in. [22mm] or less.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 equivalents; therefore, each systemshall 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.1.4 The text of this specification contains notes and foot-notes that provide explanatory material. Such notes andfootnotes, excluding those in tables and figures, do not containany mandatory requirements.2. Referenced Documents2.1 ASTM Standards2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA700 Guide for Packaging, Marking, and Loading Methodsfor Steel Products for ShipmentA751 Test Methods, Practices, and Terminology for Chemi-cal Analysis of Steel ProductsA941 Terminology Relating to Steel, Stainless Steel, RelatedAlloys, and Ferroalloys2.2 Military Standard3MIL-STD-129 Marking for Shipment and Storage2.3 Federal Standards4Fed. Std. No. 123 Marking for ShipmentFed. Std. No. 183 Continuous Identification Marking of Ironand Steel Products2.4 AIAG Standard5B-1 Bar Code Symbology Standard3. Terminology3.1 DefinitionsFor definitions of terms used in thisspecification, refer to Terminology A941.4. Ordering Information4.1 Orders for material under this specification shall containinformation concerning as many of the following items as arerequired to describe the desired material adequately4.1.1 Quantity feet [metres] or number of lengths,4.1.2 Name of material cold-formed HSS,4.1.3 Size outside diameter and wall thickness for roundHSS, and outside dimensions and wall thickness for square andrectangular HSS,4.1.4 Length random, multiple, specific; see 12.4,4.1.5 End condition see 17.3,4.1.6 Burr removal see 17.3,4.1.7 Certification see Section 19,4.1.8 ASTM specification designation and year of issue,4.1.9 End use,4.1.10 Special requirements,4.1.11 Bar coding see 20.3,4.1.12 Packing, Marking and Loading see Section 21, and1This 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 Nov. 15, 2015. Published November 2015. Originallyapproved in 2013. Last previous edition approved in 2013 as A1085–13. DOI10.1520/A1085_A1085M-15.2For 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 standard’s Document Summary page onthe ASTM website.3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http//dodssp.daps.dla.mil.4Available from U.S. Government Printing Office Superintendent of Documents,732 N. Capitol St., NW, Mail Stop SDE, Washington, DC 20401, http//www.access.gpo.gov.5Available from Automotive Industry Action Group AIAG, 26200 Lahser Rd.,Suite 200, Southfield, MI 48033, http//www.aiag.org.*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 States14.1.13 Supplementary requirement, if any, including theadditional requirement called for in the supplementary require-ment.5. Process5.1 The steel shall be made by one or more of the followingprocesses open-hearth, basic-oxygen, or electric furnace.5.2 When steels of different grades are sequentially strandcast, the steel producer shall identify the resultant transitionmaterial and remove it using an established procedure thatpositively separates the grades.6. Manufacture6.1 HSS shall be made from flat-rolled steel by the electric-resistance-welding process. The longitudinal butt joint ofwelded tubing shall be welded across its thickness. No trans-verse coil splices are permitted in the furnished product.6.2 Stress relief or annealing is permissible. If heat treat-ment is performed mechanical testing shall be conducted afterheat treatment.NOTE 1Welded HSS is normally furnished without removal of theinside flash.7. Heat Analysis7.1 Each heat analysis shall conform to the requirementsspecified in Table 1 for heat analysis.7.2 The maximum permissible carbon equivalent shall be0.45 . The carbon equivalent shall be based upon the heatanalysis. The required heat analysis and the carbon equivalentshall be reported. The carbon equivalent shall be calculatedusing the following formulaCE 5 C1Mn⁄61Cr1 Mo1 V⁄51Ni1 Cu⁄158. Product Analysis8.1 When product tests are conducted the HSS shall con-form to the requirements of Table 1 for product analysis.8.2 If product analyses are made, they shall be made usingtest specimens taken from two lengths of HSS from each lot of500 lengths, or fraction thereof, or two pieces of flat-rolledstock from each lot of a corresponding quantity of flat-rolledstock. Methods and practices relating to chemical analysis shallbe in accordance with Test Methods, Practices, and Terminol-ogy A751. Such product analyses shall conform to the require-ments specified in Table 1 for product analysis.8.3 If both product analyses representing a lot fail toconform to the specified requirements, the lot shall be rejected.8.4 If only one product analysis representing a lot fails toconform to the specified requirements, product analyses shallbe made using two additional test specimens taken from the lot.Both additional product analyses shall conform to the specifiedrequirements or the lot shall be rejected.9. Tensile Requirements9.1 The material, as represented by the test specimen, shallconform to the requirements as to tensile properties prescribedin Table 2.10. Charpy V-Notch CVN Impact Requirements10.1 The material, as represented by the test specimen, shallconform to the minimum average CVN Impact Value of 25ft-lb at 40F [34 Joules at 4C], based on full-size longitudinaltest specimens. See Test Methods and Definitions A370 foracceptance criteria for subsize specimens.11. Flattening Test11.1 The flattening test shall be made on round HSS. Aflattening test is not required for square and rectangular HSS.11.2 For round HSS, a test specimen at least 4 in. [100 mm]in length shall be flattened cold between parallel plates in threesteps, with the weld located 90 from the line of direction offorce. During the first step, which is a test for ductility of theweld, no cracks or breaks on the inside or outside surfaces ofthe test specimen shall be present until the distance between theplates is less than two-thirds of the specified outside diameterof the tubing. For the second step, no cracks or breaks on theinside or outside parent metal surfaces of the test specimen,except as provided for in 11.4, shall be present until thedistance between the plates is less than one-half of the specifiedoutside diameter of the tubing. During the third step, which isa test for soundness, the flattening shall be continued until thetest specimen breaks or the opposite walls of the test specimenmeet. Evidence of laminated or unsound material or of incom-plete weld that is revealed during the entire flattening test shallbe cause for rejection.11.3 Surface imperfections not found in the test specimenbefore flattening, but revealed during the first step of theflattening test, shall be judged in accordance with Section 17.TABLE 1 Chemical RequirementsElementComposition, Heat Analysis Product AnalysisCarbon, max 0.26 0.30Manganese, max 1.35 1.40Phosphorus, max 0.035 0.045Sulfur, max 0.035 0.045Aluminum, min .015 acid soluble OR.020 total Al content{Silicon 0.04 or0.15 Si 0.250.400 [10.2 mm] 1.8t to 3.0tTABLE 6 Permissible Variations in Twist for Square andRectangular HSSSpecified Outside Large FlatDimension, in. [mm]Maximum Permissible Variations in Twist per3 ft of Length [Twist per Meter of Length]in. [mm]11⁄2 [40] and under 0.050 [1.3]Over 11⁄2 to 21⁄2 [40 to 65], incl 0.062 [1.6]Over 21⁄2 to 4 [65 to 100], incl 0.075 [1.9]Over 4 to 6 [100 to 150], incl 0.087 [2.2]Over 6 to 8 [150 to 200], incl 0.100 [2.5]Over 8 [200] 0.112 [2.8]A1085/A1085M − 15314.3 One set of CVN tests as specified in Section 16 shall bemade from a length of HSS representing each lot.14.4 The flattening test, as specified in Section 11, shall bemade on one length of round HSS from each lot.15. Retests15.1 If the results of the mechanical tests representing anylot fail to conform to the applicable requirements specified inSections 9, 10, and 11, the lot shall be rejected or retested usingadditional HSS of double the original number from the lot. Thelot shall be acceptable if the results of all such retestsrepresenting the lot conform to the specified requirements.15.2 If one or both of the retests specified in 15.1 fail toconform to the applicable requirements specified in Sections 9,10, and 11, the lot shall be rejected or, subsequent to themanufacturer heat treating, reworking, or otherwise eliminat-ing the condition responsible for the failure, the lot shall betreated as a new lot and tested accordingly.16. Test Methods16.1 Tension test specimens shall conform to the applicablerequirements of Test Methods and Definitions A370, AnnexA2.16.2 Tension test specimens shall be full-size longitudinaltest specimens or longitudinal strip test specimens. Any longi-tudinal strip test specimens shall be taken from a location atleast 90 from the weld and shall be prepared without flatteningin the gage length. Longitudinal strip test specimens shall haveall burrs removed. Tension test specimens shall not containsurface imperfections that would interfere with proper deter-mination of the tensile properties.16.3 The yield strength corresponding to the 0.2 strainoffset method shall be determined.16.4 CVN Impact test specimens shall conform to theapplicable requirements of Test Methods and Definitions A370.Subsize specimens are permitted in accordance with TestMethods and Definitions A370.16.5 CVN Impact test specimens shall be longitudinal. Theyshall be taken from a location at least 90 from the weld.17. Inspection17.1 All HSS shall be inspected at the place of manufactureto ensure conformance to the requirements of this specification.17.2 All HSS shall be free from defects and shall have aworkmanlike finish.17.2.1 Surface imperfections shall be classed as defectswhen their depth reduces the remaining wall thickness to lessthan 95 of the specified wall thickness. It shall be permis-sible for defects having a depth not in excess of 331⁄3 of thespecified wall thickness to be repaired by welding, subject tothe following conditions17.2.1.1 The defect shall be completely removed by chip-ping or grinding to sound metal,17.2.1.2 The repair weld shall be made using a low hydro-gen welding process, and17.2.1.3 The projecting weld metal shall be removed toproduce a workmanlike finish.17.2.2 Surface imperfections such as handling marks, lightdie or roll marks, or shallow pits are not considered defectsprovided that the imperfections are removable within thespecified limits on wall thickness. The removal of such surfaceimperfections is not required. HSS shall be free of protrudingmetal on the outside surface of the weld seam.17.3 Unless otherwise specified in the purchase order,structural HSS shall be furnished with square cut ends, with theburr held to a minimum. When so specified in the purchaseorder, the burr shall be removed on the outside diameter, insidediameter, or both.18. Rejection18.1 It shall be permissible for the purchaser to inspect HSSreceived from the manufacturer and reject any HSS that doesnot meet the requirements of this specification, based upon theinspection and test methods outlined herein. The purchasershall notify the manufacturer of any HSS that has beenrejected, and the disposition of such HSS shall be subject toagreement between the manufacturer and the purchaser.18.2 It shall be permissible for the purchaser to set aside anyHSS that is found in fabrication or installation within the scopeof this specification to be unsuitable for the intended end use,based on the requirements of this specification. The purchasershall notify the manufacturer of any HSS that has been setaside. Such HSS shall be subject to mutual investigation as tothe nature and severity of the deficiency and the forming orinstallation, or both, conditions involved. The disposition ofsuch HSS shall be subject to agreement between the manufac-turer and the purchaser.19. Certification19.1 When specified in the purchase order or contract, themanufacturer shall furnish to the purchaser a certificate ofcompliance stating that the product was manufactured,sampled, tested, and inspected in accordance with this speci-fication and any other requirements designated in the purchaseorder or contract, and was found to meet all such requirements.Certificates of compliance shall include the specificationnumber, year of issue, and manufacturer. If testing is notperformed by manufacturer, then the name of the testingagency shall be on the certification in addition to the itemspreviously stated.19.2 When specified in the purchase order or contract, themanufacturer shall furnish to the purchaser test reports for theproduct shipped that contain the heat analyses and the results ofthe tension tests and CVN Impact tests required by thisspecification and the purchase order or contract.19.3 A signature or notarization is not required on certifi-cates of compliance or test reports; however, the documentsshall clearly identify the organization submitting them. Not-withstanding the absence of a signature, the organizationsubmitting the document is responsible for its content.

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