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ASTM A109 - A 109M - 15.pdf

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ASTM A109 - A 109M - 15.pdf

Designation A109/A109M − 15Standard Specification forSteel, Strip, Carbon 0.25 Maximum Percent, Cold-Rolled1This standard is issued under the fixed designation A109/A109M; the number immediately following the designation indicates the yearof 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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope*1.1 This specification covers cold-rolled carbon steel strip incut lengths or coils, furnished to closer tolerances than cold-rolled carbon steel sheet, with specific temper, with specificedge or specific finish, and in sizes as followsWidth, in. Thickness, in.Over1⁄2 to 2315⁄16 0.300 and underOver 12.5 to 600 mm 7.6 mm and under1.2 Cold-rolled strip is produced with a maximum specifiedcarbon not exceeding 0.25 percent.1.3 Strip tolerance products may be available in widthswider than 2315⁄16 in. [600 mm] by agreement between pur-chaser and supplier. However, such products are technicallyclassified as cold rolled sheet. The tolerances, finishes,tempers, edges, and available widths and thicknesses differen-tiate cold rolled strip from the product known as cold rolledsheet which is defined by Specification A568/A568M and fromcold rolled high carbon strip which is defined by SpecificationA682/A682M.1.4 For the purpose of determining conformance with thisspecification, values shall be rounded to the nearest unit in theright hand place of figures used in expressing the limitingvalues in accordance with the rounding method of PracticeE29.1.5 The SI portions of the tables contained herein listpermissible variations in dimensions and mass see Note 1inSI metric units. The values listed are not exact conversions ofthe values listed in the inch-pound tables, but instead arerounded or rationalized values. Conformance to SI tolerancesis mandatory when the “M” specification is used.NOTE 1The term weight is used when inch-pound units are thestandard. However, under SI the preferred term is mass.1.6 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 exact equivalents; therefore, eachsystem shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.1.7 This specification is expressed in both inch-pound unitsand SI units. However, unless the order specifies the applicable“M” specification designation SI units, the material shall befurnished to inch-pound units.2. Referenced Documents2.1 ASTM Standards2A370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA568/A568M Specification for Steel, Sheet, Carbon,Structural, and High-Strength, Low-Alloy, Hot-Rolled andCold-Rolled, General Requirements forA682/A682M Specification for Steel, Strip, High-Carbon,Cold-Rolled, General Requirements For Withdrawn20093A700 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 FerroalloysA1073/A1073M Practice for Using Hand Micrometers toMeasure the Thickness of Nonmetallic and Metallic-Coated Steel SheetE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE430 Test Methods for Measurement of Gloss of High-Gloss1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.19 on Steel Sheet and Strip.Current edition approved Nov. 1, 2015. Published November 2015. Originallyapproved in 1926. Last previous edition approved in 2014 as A109/A109M – 14.DOI 10.1520/A0109_A0109M-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.3The last approved version of this historical standard is referenced onwww.astm.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 States1Surfaces by Abridged Goniophotometry2.2 Military StandardMIL-STD-129 Marking for Shipment and Storage42.3 Federal Standard123 Marking for Shipments Civil Agencies4183 Continuous Identification Marking of Iron and SteelProducts43. Terminology3.1 Definitions of Terms Specific to This Standard3.1.1 annealingthe process of heating to and holding at asuitable temperature and then cooling at a suitable rate, forsuch purposes as reducing hardness, facilitating cold working,producing a desired microstructure, or obtaining desiredmechanical, physical, or other properties. box annealinginvolves annealing in a sealed con-tainer under conditions that minimize oxidation. The strip isusually heated slowly to a temperature below the transforma-tion range, but sometimes above or within it, and is then cooledslowly. continuous annealinginvolves heating the strip incontinuous strands through a furnace having a controlledatmosphere followed by a controlled cooling.3.1.2 carbon steelthe designation for steel when no mini-mum content is specified or required for aluminum, chromium,cobalt, columbium, molybdenum, nickel, titanium, tungsten,vanadium, zirconium or any other element added to obtain adesired alloying effect; when the specified minimum for copperdoes not exceed 0.40 or when the maximum contentspecified for any of the following elements does not exceed thepercentage noted manganese 1.65, silicon 0.60, or copper0. DiscussionIn all carbon steels small quantities ofcertain residual elements unavoidably retained from raw ma-terials are sometimes found which are not specified or required,such as copper, nickel, molybdenum, chromium, and so forth.These elements are considered as incidental and are notnormally reported.3.1.3 cold reductionthe process of reducing the thicknessof the strip at room temperature. The amount of reduction isgreater than that used in skin-rolling see dead softthe temper of strip produced without defi-nite control of stretcher straining or fluting. It is intended fordeep drawing applications where such surface disturbances arenot objectionable.3.1.5 finishthe degree of smoothness or luster of the strip.The production of specific finishes requires special preparationand control of the roll surfaces employed.3.1.6 normalizingheating to a suitable temperature abovethe transformation range and then cooling in air to a tempera-ture substantially below the transformation range. In brightnormalizing the furnace atmosphere is controlled to preventoxidizing of the strip surface.3.1.7 skin-rolleda term denoting a relatively light coldrolling operation following annealing. It serves to reduce thetendency of the steel to flute or stretcher strain during fabrica-tion. It is also used to impart surface finish, or affect hardnessor other mechanical properties, or to improve flatness.3.1.8 tempera designation by number to indicate thehardness as a minimum, as a maximum, or as a range. Thetempers are obtained by the selection and control of chemicalcomposition, by amounts of cold reduction, by thermaltreatment, and by skin-rolling.3.2 Refer to Terminology A941 for additional definitions ofterms used in this Specification.4. Ordering Information4.1 Orders for material to this specification shall include thefollowing information, as necessary, to describe adequately thedesired product4.1.1 Quantity,4.1.2 Name of material cold-rolled carbon steel strip,4.1.3 Condition oiled or not oiled,4.1.4 Temper Section 7,4.1.5 Edge Section 8,4.1.6 Dimensions Section 9,4.1.7 Workmanship, Finish, and Appearance Section 10,4.1.8 Coil size requirements 15.2,4.1.9 ASTM designation and year of issue,4.1.10 Copper-bearing steel, if required,4.1.11 Application part identification or description,4.1.12 Cast or heat analysis request, if required, and4.1.13 Special requirements, if required.NOTE 2A typical ordering description is as follows 20 000 lbCold-Rolled Strip, Oiled, Temper 4, Edge 3, Finish 3, 0.035 by 9 in. bycoil, 5000 lb max, 16-in. ID ASTM A 109-XX, for Toaster Shells.5. Materials and Manufacture5.1 The steel shall be made by the open-hearth, basic-oxygen, or electric-furnace process.5.2 Cold-rolled carbon steel strip is normally manufacturedfrom continuously cast steel with aluminum used as thedeoxidizer. However, some applications are specified as siliconkilled. Ingot cast rimmed, capped and semi-killed steels aresubject to limited availability.5.3 Cold-rolled carbon steel strip is manufactured fromhot-rolled descaled coils by cold reducing to the desiredthickness on a single stand mill or on a tandem mill consistingof several single stands in series. Sometimes an anneal is usedat some intermediate thickness to facilitate further cold reduc-tion or to obtain desired temper and mechanical properties inthe finished strip. An anneal and skin pass is typically used asthe final step for Temper 4 and 5.6. Chemical Composition6.1 Heat AnalysisAn analysis for each heat of steel shallbe made by the manufacturer to determine the percentage ofelements shown in Table 1. This analysis shall conform to therequirements shown in Table 1. When requested, heat analysisshall be reported to purchaser or his representative.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http//quicksearch.dla.mil.A109/A109M − 1526.2 Product, Check, or Verification Analysis may be madeby the purchaser on the finished material.6.2.1 Capped or rimmed steels are not technologicallysuited to product analysis due to the nonuniform character oftheir chemical composition and therefore, the tolerances inTable 2 do not apply. Product analysis is appropriate on thesetypes of steel only when misapplication is apparent or forcopper when copper steel is specified.6.2.2 For steels other than rimmed or capped, when productanalysis is made by the purchaser, the chemical analysis shallnot vary from the limits specified by more than the amounts inTable 2. The several determinations of any element shall notvary both above and below the specified range.6.3 For referee purposes, if required, Test Methods,Practices, and Terminology A751 shall be used.6.4 For applications where cold-rolled strip is to be welded,care must be exercised in selection of chemical composition, aswell as mechanical properties, for compatibility with thewelding process and its effect on altering the properties.7. Temper and Bend Test Requirement7.1 Cold-rolled carbon strip specified to temper numbersshall conform to the Rockwell hardness requirements shown inTable When a temper number is not specified, Rockwellhardness requirements are established by agreement.7.2 It is recommended that hardness values be specified inthe same scale as that which will be used in testing the strip.7.3 Bend tests shall be conducted at room temperature andtest specimens shall be capable of being bent to the require-ments shown in Table 4.TABLE 1 Heat AnalysisAComposition– Wt ElementTemper No.1, 2, 3Temper No.4, 5Carbon, max 0.25 0.15Manganese, max 0.90 0.60Phosphorous, max 0.025 0.025Sulfur, max 0.025 0.025SiliconA... ...AluminumA,B... ...CopperC0.20 0.20Nickel, maxD0.20 0.20Chromium, maxD, E0.15 0.15Molybdenum, maxD0.06 0.06VanadiumF... ...ColumbiumF... ...TitaniumF... ...AWhere an ellipsis . . . appears in this table, there is no requirement, but theanalysis shall be reported unless otherwise specified in this specification.BThe analysis shall be reported. When killed steel is specified and aluminum is thedeoxidizing element, the minimum is 0.02, and the analysis shall be reported.CWhen copper steel is specified, the copper limit specified is a minimumrequirement. When copper steel is not specified, the copper limit is a maximumrequirement.DThe sum of copper, nickel, chromium, and molybdenum shall not exceed 0.50 on heat analysis. When one or more of these elements is specified, the sum doesnot apply; in which case, only the individual limits on the remaining elements willapply.EChromium is permitted, at the producer’s option, to 0.25 maximum when thecarbon is less than or equal to 0.05 . In such case, the limit on the sum of the fourelements in Footnote D does not apply.FReporting shall be required when the level for any of these elements exceeds0.008 wt.TABLE 2 Tolerances for Product AnalysisElementLimit or Maximumof Specified Ele-ment ToleranceUnderMinimumLimitOverMaxi-mumLimitCarbon to 0.15, inclover 0.15 to 0.25, incl0. to 0.60, incl 0.03 0.03Phosphorus ... 0.01Sulfur ... 0.01Copper 0.02 ...TABLE 3 Hardness RequirementsINCH-POUND UNITSTemperThickness, in. Rockwell HardnessUnder Through MinimumMaximumapprox.No. 1 hard 0.025 . . . 15T90 . . .0.040 0.025 30T76 . . .0.070 0.040 B90.0 . . .0.300 0.070 B84.0 . ..No. 2Ahalf-hard 0.025 . . . 15T83.5 15T88.50.040 0.025 30T63.5 30T73.50.300 0.040 B70.0 B85No. 3Aquarter-hard 0.025 . . . 15T80 15T850.040 0.025 30T56.5 30T670.300 0.040 B60 B75No. 4A,Bskin-rolled 0.025 . . . . . . 15T820.040 0.025 . . . 30T600.300 0.040 . . . B65No. 5A,Bdead-soft 0.025 . . . .... 15T78.50.040 0.025 . . . 30T530.300 0.040 . . . B55SI UNITSThickness, mm Rockwell HardnessTemperUnder Through MinimumMaximunapprox.No. 1 hard 0.6 . . . 15T90 . . .1.0 0.6 30T76 . . .1.8 1.0 B90.0 . . .7.6 1.8 B84.0 . . .No. 2Ahalf-hard 0.6 . . . 15T83.5 15T88.51.0 0.6 30T63.5 30T73.57.6 1.0 B70.0 B85No. 3Aquarter-hard 0.6 . . . 15T80 15T851.0 0.6 30T56 30T677.6 1.0 B60 B75No. 4A,Bskin-rolled 0.6 . . . . . . 15T821.0 0.6 . . . 30T607.6 1.0 . . . B65No. 5A,Bdead-soft 0.6 . . . . . . 15T78.51.0 0.6 . . . 30T537.6 1.0 . . . B55ARockwell hardness values apply at time of shipment. Aging may cause slightlyhigher values when tested at a later date.BWhere No. 4 and 5 tempers are ordered with a carbon range of 0.15 to 0.25 ,the maximum hardness requirement is established by agreement.A109/A109M − 1537.4 All mechanical tests are to be conducted in accordancewith Test Methods and Definitions A370.8. Edge8.1 The desired edge number shall be specified as follows8.1.1 Number 1 Edge is a prepared edge of a specifiedcontour round or square, which is produced when a veryaccurate width is required or when an edge condition suitablefor electroplating is required, or both.8.1.2 Number 2 Edge is a natural mill edge carried throughthe cold rolling from the hot-rolled st


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