1、Designation: A29/A29M 15Standard Specification forGeneral Requirements for Steel Bars, Carbon and Alloy,Hot-Wrought1This standard is issued under the fixed designation A29/A29M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision, the y
2、ear 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 specification2cover
3、s a group of common require-ments which, unless otherwise specified in the purchase orderor in an individual specification, shall apply to carbon and alloysteel bars under each of the following ASTM specifications (orunder any other ASTM specification which invokes thisspecification or portions ther
4、eof):Title of Specification ASTMDesignationAHot-Rolled Carbon Steel Bars:Steel Bars, Carbon, Quenched and Tempered A321Steel Bars and Shapes, Carbon Rolled from “T Rails A499Steel Bars, Carbon, Merchant Quality, M-Grades A575Steel Bars, Carbon, Hot-Wrought, Special Quality A576Steel Bars, Carbon, Me
5、rchant Quality, MechanicalPropertiesA663/A663MSteel Bars, Carbon, Hot-Wrought, Special Quality, Me-chanical PropertiesA675/A675MSteel Bars for Springs, Carbon and Alloy A689Cold-Finished Carbon Steel Bars:Steel Bars, Carbon and Alloy, Cold-Finished A108Cold-Drawn Stress-Relieved Carbon Steel Bars Su
6、b-ject to Mechanical Property RequirementsA311/A311MHot-Rolled Alloy Steel Bars:Steel Bars, Alloy, Standard Grades A322Carbon and Alloy Steel Bars Subject to End-QuenchHardenability RequirementsA304Steel Bars, Alloy, Hot-Wrought or Cold-Finished,Quenched and TemperedA434/A434MSteel Bars, Alloy, Hot-
7、Wrought, for Elevated Tempera-ture or Pressure-Containing Parts, or BothA739Cold-Finished Alloy Steel Bars:Steel Bars, Alloy, Hot-Rolled or Cold-Finished,Quenched and TemperedA434/A434MSteel Bars, Carbon, Hot-Wrought or Cold-Finished,Special Quality, for Pressure Piping ComponentsA696AThese designat
8、ions refer to the latest issue of the respective specifications,which appear either in the Annual Book of ASTM Standards, Vol 01.05, or asreprints obtainable from ASTM.1.2 In case of any conflict in requirements, the requirementsof the purchase order, the individual material specification, andthis g
9、eneral specification shall prevail in the sequence named.1.3 The values stated in inch-pound units or SI units are tobe regarded as the standard. Within the text, the SI units areshown in brackets. The values stated in each system are notexact equivalents; therefore, each system must be used inde-pe
10、ndently of the other. Combining values from the two systemsmay result in nonconformance with the specification.1.4 For purposes of determining conformance to this speci-fication and the various material specifications referenced in1.1, dimensional values shall be rounded to the nearest unit inthe ri
11、ght-hand place of figures used in expressing the limitingvalues in accordance with the rounding method of PracticeE29.NOTE 1Specification A29/A29M previously listed dimensional toler-ances for cold-finished bars; these are now found in Specification A108.2. Referenced Documents2.1 ASTM Standards:3A1
12、08 Specification for Steel Bar, Carbon and Alloy, Cold-FinishedA304 Specification for Carbon and Alloy Steel Bars Subjectto End-Quench Hardenability RequirementsA311/A311M Specification for Cold-Drawn, Stress-Relieved Carbon Steel Bars Subject to Mechanical Prop-erty RequirementsA321 Specification f
13、or Steel Bars, Carbon, Quenched andTempered (Withdrawn 2007)4A322 Specification for Steel Bars, Alloy, Standard GradesA370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA434/A434M Specification for Steel Bars, Alloy, Hot-Wrought or Cold-Finished, Quenched and Tempered1This spec
14、ification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.15 on Bars.Current edition approved Nov. 1, 2015. Published November 2015. Originallyapproved in 1957. Last previous edition approved in 2012 as A
15、29/A29M 121.DOI: 10.1520/A0029_A0029M-15.2For ASME Boiler and Pressure Vessel Code applications, see related Specifi-cation SA-29/SA-29M in Section II of that Code.3For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Boo
16、k of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.4The 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 Dr
17、ive, PO Box C700, West Conshohocken, PA 19428-2959. United States1A499 Specification for Steel Bars and Shapes, CarbonRolled from “T” RailsA575 Specification for Steel Bars, Carbon, MerchantQuality, M-GradesA576 Specification for Steel Bars, Carbon, Hot-Wrought,Special QualityA663/A663M Specificatio
18、n for Steel Bars, Carbon, Mer-chant Quality, Mechanical PropertiesA675/A675M Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical PropertiesA689 Specification for Carbon and Alloy Steel Bars forSpringsA696 Specification for Steel Bars, Carbon, Hot-Wrought orCold-Finished, S
19、pecial Quality, for Pressure Piping Com-ponentsA700 Guide for Packaging, Marking, and Loading Methodsfor Steel Products for ShipmentA739 Specification for Steel Bars, Alloy, Hot-Wrought, forElevated Temperature or Pressure-Containing Parts, orBothA751 Test Methods, Practices, and Terminology for Che
20、mi-cal Analysis of Steel ProductsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE112 Test Methods for Determining Average Grain Size2.2 Federal Standards:5Fed. Std. No. 123 Marking for Shipment (Civil Agencies)Fed. Std. No. 183 Continuous Identifica
21、tion Marking of Ironand Steel Products2.3 Military Standard:5MIL-STD-163 Steel Mill ProductsPreparation for Ship-ment and Storage2.4 Other Standards:6AIAG B-1 Bar Code Symbology Standard for 3-of-9 BarCodesAIAG B-5 02.00 Primary Metals Tag Application Standard3. Terminology3.1 Definitions of Terms S
22、pecific to This Standard:3.1.1 cold-finished steel barssteel bars produced by coldfinishing previously hot-wrought bars by means of colddrawing, cold forming, turning, grinding, or polishing (singlyor in combination) to yield straight lengths or coils in sectionsthat are uniform throughout their len
23、gth and in the followingsections and sizes:3.1.1.1 rounds9 in. 230 mm and under in diameter,3.1.1.2 squares6 in. 150 mm and under between parallelsurfaces,3.1.1.3 hexagons4 in. 100 mm and under between par-allel surfaces,3.1.1.4 flats18 in. 3 mm and over in thickness and notover 12 in. 300 mm in wid
24、th, and3.1.1.5 special bar sections.3.1.2 hot-wrought steel barssteel bars produced by hotforming ingots, blooms, billets, or other semifinished forms toyield straight lengths (or coils, depending upon size, section,and mill equipment) in sections that are uniform throughouttheir length, and in the
25、following sections and sizes:3.1.2.1 rounds732 to 10.0 in. 5.5 to 250 mm, inclusive,3.1.2.2 squares732 to 6.0 in. 6 to 160 mm, inclusive,3.1.2.3 round-cornered squares732 to 8.0 in. 6 to 200mm, inclusive,3.1.2.4 flats14 to 8 in. inclusive, in width:1364 in. inminimum thickness up to 6 in. in width;
26、and 0.230 in. inminimum thickness for over 6 to 8 in. in width, inclusive over5 mm in thickness up to 150 mm in width; and over 6 mm inthickness for over 150 mm through 200 mm in width.Maximum thickness for all widths is 4 in. 100 mm,3.1.2.5 hexagons and octagons14 to 4116 in. 6 to 103mm, inclusive,
27、 between parallel surfaces,3.1.2.6 bar size shapesAngles, channels, tees, zees, whentheir greatest cross-sectional dimension is under 3 in. 75 mm,and3.1.2.7 special bar sectionsHalf-rounds, ovals, half-ovals,other special bar size sections.3.1.3 lotunless otherwise specified in the contract ororder,
28、 a lot shall consist of all bars submitted for inspection atthe same time of the same heat, condition, finish, size, or shape.For bars specified in the quenched and tempered condition,when heat treated in batch-type furnaces, a lot shall consist ofall bars from the same heat, of the same prior condi
29、tion, thesame size, and subjected to the same heat treatment in onetempering charge. For bars specified in the quenched andtempered condition, when heat treated without interruption in acontinuous-type furnace, a lot shall consist of all bars from thesame heat, of the same prior condition, of the sa
30、me size, andsubjected to the same heat treatment.4. Chemical Composition4.1 Limits:4.1.1 The chemical composition shall conform to the re-quirements specified in the purchase order or the individualproduct specifications. For convenience the grades commonlyspecified for carbon steel bars are shown i
31、n Tables 1 and 2.Bars may be ordered to these grade designations and when soordered shall conform to the specified limits by heat analysis.4.1.2 When compositions other than those shown in Tables1 and 2 are required, the composition limits shall be preparedusing the ranges and limits shown in Table
32、3 for carbon steeland Table 4 for alloy steel.4.2 Heat or Cast Analysis:4.2.1 The chemical composition of each heat or cast shall bedetermined by the manufacturer in accordance with TestMethods, Practices, and Terminology A751.4.2.2 The heat or cast analysis shall conform to the require-ments specif
33、ied in the product specification or purchase order.5Copies of military specifications, military standards, and federal standardsrequired by contractors in connection with specific procurement functions should beobtained from the procuring activity or as directed by the contracting officer, or fromDL
34、A Document Services, Building 4/D, 700 Robbins Ave., Philadelphia, PA19111-5094, http:/quicksearch.dla.mil.6Available from Automotive Industry Action Group (AIAG), 26200 Lahser Rd.,Suite 200, Southfield, MI 48033-7156, http:/www.aiag.org.A29/A29M 152TABLE 1 Grade Designations and Chemical Compositio
35、ns of Carbon Steel BarsGrade DesignationHeat Chemical Ranges and Limits, %Carbon Manganese Phosphorus, max Sulfur, maxANonresulfurized Carbon SteelsB,C, D,E,F1005 0.06 max 0.35 max 0.040 0.0501006 0.08 max 0.250.40 0.040 0.0501008 0.10 max 0.300.50 0.040 0.0501010 0.080.13 0.300.60 0.040 0.0501011 0
36、.080.13 0.600.90 0.040 0.0501012 0.100.15 0.300.60 0.040 0.0501013 0.110.16 0.500.80 0.040 0.0501015 0.130.18 0.300.60 0.040 0.0501016 0.130.18 0.600.90 0.040 0.0501017 0.150.20 0.300.60 0.040 0.0501018 0.150.20 0.600.90 0.040 0.0501019 0.150.20 0.701.00 0.040 0.0501020 0.180.23 0.300.60 0.040 0.050
37、1021 0.180.23 0.600.90 0.040 0.0501022 0.180.23 0.701.00 0.040 0.0501023 0.200.25 0.300.60 0.040 0.0501025 0.220.28 0.300.60 0.040 0.0501026 0.220.28 0.600.90 0.040 0.0501029 0.250.31 0.600.90 0.040 0.0501030 0.280.34 0.600.90 0.040 0.0501034 0.320.38 0.500.80 0.040 0.0501035 0.320.38 0.600.90 0.040
38、 0.0501037 0.320.38 0.701.00 0.040 0.0501038 0.350.42 0.600.90 0.040 0.0501039 0.370.44 0.701.00 0.040 0.0501040 0.370.44 0.600.90 0.040 0.0501042 0.400.47 0.600.90 0.040 0.0501043 0.400.47 0.701.00 0.040 0.0501044 0.430.50 0.300.60 0.040 0.0501045 0.430.50 0.600.90 0.040 0.0501046 0.430.50 0.701.00
39、 0.040 0.0501049 0.460.53 0.600.90 0.040 0.0501050 0.480.55 0.600.90 0.040 0.0501053 0.480.55 0.701.00 0.040 0.0501055 0.500.60 0.600.90 0.040 0.0501059 0.550.65 0.500.80 0.040 0.0501060 0.550.65 0.600.90 0.040 0.0501064 0.600.70 0.500.80 0.040 0.0501065 0.600.70 0.600.90 0.040 0.0501069 0.650.75 0.
40、400.70 0.040 0.0501070 0.650.75 0.600.90 0.040 0.0501071 0.650.70 0.751.05 0.040 0.0501074 0.700.80 0.500.80 0.040 0.0501075 0.700.80 0.400.70 0.040 0.0501078 0.720.85 0.300.60 0.040 0.0501080 0.750.88 0.600.90 0.040 0.0501084 0.800.93 0.600.90 0.040 0.0501086 0.800.93 0.300.50 0.040 0.0501090 0.850
41、.98 0.600.90 0.040 0.0501095 0.901.03 0.300.50 0.040 0.050Resulfurized Carbon SteelsB,D,F1108 0.080.13 0.600.80 0.040 0.080.131109 0.080.13 0.600.90 0.040 0.080.131110 0.080.13 0.300.60 0.040 0.080.131116 0.140.20 1.101.40 0.040 0.160.231117 0.140.20 1.001.30 0.040 0.080.131118 0.140.20 1.301.60 0.0
42、40 0.080.131119 0.140.20 1.001.30 0.040 0.240.331132 0.270.34 1.351.65 0.040 0.080.131137 0.320.39 1.351.65 0.040 0.080.131139 0.350.43 1.351.65 0.040 0.130.201140 0.370.44 0.701.00 0.040 0.080.131141 0.370.45 1.351.65 0.040 0.080.131144 0.400.48 1.351.65 0.040 0.240.331145 0.420.49 0.701.00 0.040 0
43、.040.071146 0.420.49 0.701.00 0.040 0.080.131151 0.480.55 0.701.00 0.040 0.080.13Rephosphorized and Resulfurized Carbon SteelsD,FGrade Designation Carbon Manganese Phosphorous Sulfur Lead1211 0.13 max 0.600.90 0.070.12 0.100.15 .1212 0.13 max 0.701.00 0.070.12 0.160.23 .A29/A29M 153These can be the
44、heat chemical range and limit for a gradedesignated in Tables 1 and 2, or another range and limit inaccordance with 4.1.2, or with requirements of the productspecification.NOTE 2Heat analysis for lead is not determinable since lead is addedto the ladle stream while each ingot is poured. When specifi
45、ed as an addedelement to a standard steel, the percentage of lead is reported as 0.15 to0.35 incl, which is the range commonly specified for this element.4.2.3 If requested or required, the heat analysis shall bereported to the purchaser or his representative.4.2.4 Reporting of significant figures a
46、nd rounding shall bein accordance with Test Methods, Practices, and TerminologyA751.4.3 Product Analysis:4.3.1 Merchant quality carbon bar steel is not subject torejection for product analysis unless misapplication of a heat isclearly indicated.4.3.2 Analyses may be made by the purchaser from finish
47、edbars other than merchant quality representing each heat ofopen-hearth, basic-oxygen, or electric-furnace steel. Thechemical composition thus determined shall not vary from thelimits specified in the applicable specification by more than theamounts prescribed in Table 5 and Table 6, but the several
48、determinations of any element, excluding lead, in a heat maynot vary both above and below the specified range. Rimmed orcapped steel is characterized by a lack of homogeneity in itscomposition, especially for the elements carbon, phosphorus,and sulfur; therefore, when rimmed or capped steel is speci
49、fiedTABLE 1 ContinuedRephosphorized and Resulfurized Carbon SteelsD,FGrade Designation Carbon Manganese Phosphorous Sulfur Lead1213 0.13 max 0.701.00 0.070.12 0.240.33 .1215 0.09 max 0.751.05 0.040.09 0.260.35 .12L13 0.13 max 0.701.00 0.070.12 0.240.33 0.150.3512L14 0.15 max 0.851.15 0.040.09 0.260.35 0.150.3512L15 0.09 max 0.751.05 0.040.09 0.260.35 0.150.35Hig
