1、Designation: A 109/A 109M 08Standard Specification forSteel, Strip, Carbon (0.25 Maximum Percent), Cold-Rolled1This standard is issued under the fixed designationA 109/A 109M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the yea
2、r 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 specification covers cold-
3、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 follows:Width, in. Thickness, in.Over12 to 231516 0.300 and underOver 12.5 to 600 mm 7.6 mm and under1.2 C
4、old-rolled strip is produced with a maximum specifiedcarbon not exceeding 0.25 percent.1.3 Strip tolerance products may be available in widthswider than 231516 in. 600 mm by agreement between pur-chaser and supplier. However, such products are technicallyclassified as cold rolled sheet. The toleranc
5、es, finishes, tem-pers, edges, and available widths and thicknesses differentiatecold rolled strip from the product known as cold rolled sheetwhich is defined by SpecificationA 568/A 568M and from coldrolled high carbon strip which is defined by SpecificationA 682/A 682M.1.4 For the purpose of deter
6、mining 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 PracticeE 29.1.5 The SI portions of the tables contained herein listpermissible variations in dimen
7、sions and mass (see Note 1)inSI (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
8、-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 oth
9、er. 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 u
10、nits.2. Referenced Documents2.1 ASTM Standards:2A 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 568/A 568M Specification for Steel, Sheet, Carbon,Structural, and High-Strength, Low-Alloy, Hot-Rolled andCold-Rolled, General Requirements forA 682/A 682M Specification for St
11、eel, Strip, High-Carbon,Cold-Rolled, General Requirements ForA 700 Practices for Packaging, Marking, and LoadingMethods for Steel Products for ShipmentA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsA 941 Terminology Relating to Steel, Stainless Steel, Re-lated A
12、lloys, and FerroalloysE 8 Test Methods for Tension Testing of Metallic MaterialsE 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 430 Test Methods for Measurement of Gloss of High-Gloss Surfaces by Abridged Goniophotometry32.2 Military Standard:MIL-
13、STD-129 Marking for Shipment and Storage42.3 Federal Standard:123 Marking for Shipments (Civil Agencies)41This 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.Cur
14、rent edition approved Oct. 1, 2008. Published October 2008. Originallyapproved in 1926. Last previous edition approved in 2003 as A 109/A 109M 03.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards
15、 volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn.4Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.1*A Summary of Changes section appears at the end
16、of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.183 Continuous Identification Marking of Iron and SteelProducts43. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 annealingthe process of heating to
17、 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 desired me-chanical, physical, or other properties.3.1.1.1 box annealinginvolves annealing in a sealed con-tain
18、er 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.3.1.1.2 continuous annealinginvolves heating the strip incontinuous strands through a furnace having a controlle
19、datmosphere 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 effec
20、t; 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 copper0.60.3.1.2.1 DiscussionIn all carbon steels small quantities ofcertain residual elements u
21、navoidably retained from raw ma-terials are sometimes found which are not specified or required,such as copper, nickel, molybdenum, chromium, etc. Theseelements are considered as incidental and are not normallyreported.3.1.3 cold reductionthe process of reducing the thicknessof the strip at room tem
22、perature. The amount of reduction isgreater than that used in skin-rolling (see 3.1.7).3.1.4 dead softthe temper of strip produced withoutdefinite control of stretcher straining or fluting. It is intendedfor deep drawing applications where such surface disturbancesare not objectionable.3.1.5 finisht
23、he 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
24、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 fab
25、rica-tion. It is also used to impart surface finish, or affect hardnessor other mechanical properties, or to improve flatness.3.1.8 temper a 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 chemicalcompos
26、ition, by amounts of cold reduction, by thermal treat-ment, and by skin-rolling.3.2 Refer to Terminology A 941 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 d
27、escribe adequately thedesired product:4.1.1 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 requir
28、ements (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:
29、 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
30、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 desc
31、aled 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 fin
32、ished strip. An anneal and skin pass is typically used asthe final step for Temper 4 and 5.6. Chemical Composition6.1 Heat Analysis An 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 therequireme
33、nts shown in Table 1. When requested, heat analysisshall be reported to purchaser or his representative.6.2 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 nonunif
34、orm 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
35、is made by the purchaser, the chemical analysis shallnot vary from the limits specified by more than the amounts inA 109/A 109M 082Table 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, Prac-tices
36、, and Terminology A 751 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
37、 Requirement7.1 Cold-rolled carbon strip specified to temper numbersshall conform to the Rockwell hardness requirements shown inTable 3.7.1.1 When a temper number is not specified, rockwellhardness requirements are established by agreement.7.2 It is recommended that hardness values be specified inth
38、e 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 4.7.4 All mechanical tests are to be conducted in accordancewith Test Methods and Definitions A 370.
39、8. Edge8.1 The desired edge number shall be specified as follows:8.1.1 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
40、natural mill edge carried throughthe cold rolling from the hot-rolled strip without additionalprocessing of the edge.8.1.3 Number 3 Edge is an approximately square edge,produced by slitting, on which the burr is not eliminated.TABLE 1 Heat AnalysisAComposition Wt %ElementTemper No.1, 2, 3Temper No.4
41、, 5Carbon, max 0.25 0.15Manganese, max 0.90 0.60Phosphorous, max 0.025 0.025Sulfur, max 0.025 0.025SiliconA. .AluminumA,B. .Copper, when copper steel isspecified, min0.20 0.20Copper, maxC0.20 0.20Nickel, maxC0.20 0.20Chromium, maxC,D0.15 0.15Molybdenum, maxC0.06 0.06VanadiumE. .ColumbiumE. .Titanium
42、E. .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 isthe deoxidizing element, the minimum is 0.02, and the analy
43、sis shall be reported.CThe sum of copper, nickel, chromium, and molybdenum shall not exceed0.50 % on heat analysis. When one or more of these elements is specified, thesum does not apply; in which case, only the individual limits on the remainingelements will apply.DChromium is permitted, at the pro
44、ducers 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 C does not apply.EReporting shall be required when the level for any of these elements exceeds0.008 wt%.TABLE 2 Tolerances for Product AnalysisElementLi
45、mit or Maximumof Specified Ele-ment %ToleranceUnderMinimumLimitOverMaxi-mumLimitCarbon to 0.15, inclover 0.15 to 0.25, incl0.020.030.030.04Manganese to 0.60, incl 0.03 0.03Phosphorus . 0.01Sulfur . 0.01Copper 0.02 .TABLE 3 Hardness RequirementsINCH-POUND UNITSTemperThickness, in. Rockwell HardnessUn
46、der Through MinimumMaximum(approx.)No. 1 (hard) 0.025 . . . 15T90 . . .0.040 0.025 30T76 . . .0.070 0.040 B90.0 . . .0.300 0.070 B84.0 . No. 2A(half-hard) 0.025 . . . 15T83.5 15T88.50.040 0.025 30T63.5 30T73.50.300 0.040 B70.0 B85No. 3A(quarter-hard) 0.025 . . . 15T80 15T850.040 0.025 30T56.5 30T670
47、.300 0.040 B60 B75No. 4A,B(skin-rolled) 0.025 . . . . . . 15T820.040 0.025 . . . 30T600.300 0.040 . . . B65No. 5A,B(dead-soft) 0.025 . . . 15T78.50.040 0.025 . . . 30T530.300 0.040 . . . B55SI UNITSThickness, mm Rockwell HardnessTemperUnder Through MinimumMaximun(approx.)No. 1 (hard) 0.6 . . . 15T90
48、 . . .1.0 0.6 30T76 . . .1.8 1.0 B90.0 . . .7.6 1.8 B84.0 . . .No. 2A(half-hard) 0.6 . . . 15T83.5 15T88.51.0 0.6 30T63.5 30T73.57.6 1.0 B70.0 B85No. 3A(quarter-hard) 0.6 . . . 15T80 15T851.0 0.6 30T56 30T677.6 1.0 B60 B75No. 4A,B(skin-rolled) 0.6 . . . . . . 15T821.0 0.6 . . . 30T607.6 1.0 . . . B6
49、5No. 5A,B(dead-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.A 109/A 109M 083Normal coiling or piling does not necessarily provide a definitepositioning of the slitting burr.8.1.4 Number 4 Edge is a rounded edge produced by edgerolling either the natural edge of hot-rolled strip or slit-e
