1、Designation: A 29/A 29M 05Standard Specification forSteel Bars, Carbon and Alloy, Hot-Wrought, GeneralRequirements for1This standard is issued under the fixed designation A 29/A 29M; the number immediately following the designation indicates the yearof original adoption or, in the case of revision,
2、the year of last revision. A number in parentheses indicates the year of last reapproval.A superscript epsilon (e) 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 specification2cove
3、rs 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 the
4、reof):Title of Specification ASTMDesignationAHot-Rolled Carbon Steel Bars:Steel Bars, Carbon, Quenched and Tempered A 321Steel Bars and Shapes, Carbon Rolled from “T Rails A 499Steel Bars, Carbon, Merchant Quality, M-Grades A 575Steel Bars, Carbon, Hot-Wrought, Special Quality A 576Steel Bars, Carbo
5、n, Merchant Quality, MechanicalPropertiesA 663/A 663MSteel Bars, Carbon, Hot-Wrought, Special Quality, Me-chanical PropertiesA 675/A 675MSteel Bars for Springs, Carbon and Alloy A 689Cold-Finished Carbon Steel Bars:Steel Bars, Carbon and Alloy, Cold-Finished A 108Cold-Drawn Stress-Relieved Carbon St
6、eel Bars Sub-ject to Mechanical Property RequirementsA 311/A 311MHot-Rolled Alloy Steel Bars:Steel Bars, Alloy, Standard Grades A 322Carbon and Alloy Steel Bars Subject to End-QuenchHardenability RequirementsA 304Steel Bars, Alloy, Hot-Wrought or Cold-Finished,Quenched and TemperedA 434Steel Bars, A
7、lloy, Hot-Wrought, for Elevated Tempera-ture or Pressure-Containing Parts, or BothA 739Cold-Finished Alloy Steel Bars:Steel Bars, Alloy, Hot-Rolled or Cold-Finished,Quenched and TemperedA 434Steel Bars, Carbon, Hot-Wrought or Cold-Finished,Special Quality, for Pressure Piping ComponentsA 696AThese d
8、esignations 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, an
9、dthis general 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
10、inde-pendently 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 i
11、nthe right-hand place of figures used in expressing the limitingvalues in accordance with the rounding method of PracticeE29.NOTE 1Specification A 29 previously listed dimensional tolerancesfor cold-finished bars; these are now found in Specification A 108.2. Referenced Documents2.1 ASTM Standards:3
12、A 108 Specification for Steel Bars, Carbon and Alloy,Cold-FinishedA 304 Specification for Carbon and Alloy Steel Bars Sub-ject to End-Quench Hardenability RequirementsA 311/A 311M Specification for Cold-Drawn, Stress-Relieved Carbon Steel Bars Subject to Mechanical Prop-erty RequirementsA 321 Specif
13、ication for Steel Bars, Carbon, Quenched andTemperedA 322 Specification for Steel Bars, Alloy, Standard GradesA 370 Test Methods and Definitions for Mechanical Testingof Steel ProductsA 434 Specification for Steel Bars, Alloy, Hot-Wrought orCold-Finished, Quenched and TemperedA 499 Specification for
14、 Steel Bars and Shapes, CarbonRolled from “T” RailsA 575 Specification for Steel Bars, Carbon, Merchant Qual-ity, M-GradesA 576 Specification for Steel Bars, Carbon, Hot-Wrought,Special Quality1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Al
15、loys and is the direct responsibility of SubcommitteeA01.15 on Bars.Current edition approved May 1, 2005. Published May 2005. Originallyapproved in 1957. Last previous edition approved in 2004 as A 29/A 29M04e1.2For ASME Boiler and Pressure Vessel Code applications see related Specifi-cation SA-29/S
16、A-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 Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1*A Summary of Changes secti
17、on appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.A 663/A 663M Specification for Steel Bars, Carbon, Mer-chant Quality, Mechanical PropertiesA 675/A 675M Specification for Steel Bars, Carbon, Hot-W
18、rought, Special Quality, Mechanical PropertiesA 689 Specification for Carbon and Alloy Steel Bars forSpringsA 696 Specification for Steel Bars, Carbon, Hot-Wrought orCold-Finished, Special Quality for Pressure Piping Com-ponentsA 700 Practices for Packaging, Marking, and LoadingMethods for Steel Pro
19、ducts for Domestic ShipmentA 739 Specification for Steel Bars, Alloy, Hot-Wrought, forElevated Temperature or Pressure-Containing Parts, orBothA 751 Test Methods, Practices, and Terminology forChemical Analysis of Steel ProductsE29 Practice for Using Significant Digits in Test Data toDetermine Confo
20、rmance with SpecificationsE112 Test Methods for Determining Average Grain Size2.2 Federal Standards:4Fed. Std. No. 123 Marking for Shipment (Civil Agencies)Fed. Std. No. 183 Continuous Identification Marking of Ironand Steel Products2.3 Military Standard:4MIL-STD-163 Steel Mill ProductsPreparation f
21、or Ship-ment and Storage2.4 Other Standards:AIAG B-1 Bar Code Symbology Standard for 3-of-9 BarCodes5AIAG B-5 02.00 Primary Metals Tag Application Standard53. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 Hot-Wrought Steel BarsSteel bars produced by hotforming ingots, blooms, b
22、illets, 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 following sections and sizes:3.1.1.1 Rounds732 to 10.0 in. 5.5 to 250 mm, inclusive,3.1.1.2 Squares732 to 6.0 in. 6
23、 to 160 mm, inclusive,3.1.1.3 Round-Cornered Squares732 to 8.0 in. 6 to 200mm, inclusive,3.1.1.4 Flats14 to 8 in. inclusive, in width:1364 in. inminimum thickness up to 6 in. in width; and 0.230 in. inminimum thickness for over 6 to 8 in. in width, inclusive over5 mm in thickness up to 150 mm in wid
24、th; and over 6 mm inthickness for over 150 mm through 200 mm in width.Maximum thickness for all widths is 4 in. 100 mm.3.1.1.5 Hexagons and Octagons14 to 4116 in. 6 to 103mm, inclusive, between parallel surfaces,3.1.1.6 Bar Size ShapesAngles, channels, tees, zees,when their greatest cross-sectional
25、dimension is under 3 in. 75mm, and3.1.1.7 Special Bar SectionsHalf-rounds, ovals, half-ovals, other special bar size sections.3.1.2 Cold-Finished Steel BarsSteel bars produced bycold finishing previously hot-wrought bars by means of colddrawing, cold forming, turning, grinding, or polishing (singlyo
26、r in combination) to yield straight lengths or coils in sectionsthat are uniform throughout their length and in the followingsections and sizes:3.1.2.1 Rounds9 in. 230 mm and under in diameter,3.1.2.2 Squares6 in. 150 mm and under between paral-lel surfaces,3.1.2.3 Hexagons4 in. 100 mm and under bet
27、weenparallel surfaces,3.1.2.4 Flats18 in. 3 mm and over in thickness and notover 12 in. 300 mm in width, and3.1.2.5 Special Bar Sections.3.1.3 LotUnless otherwise specified in the contract ororder, a lot shall consist of all bars submitted for inspection atthe same time of the same heat, condition,
28、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 condition, thesame size, and subjected to the same heat treatment in onetempering charge. For bars specified
29、 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 same size, andsubjected to the same heat treatment.4. Chemical Composition4.1 Limits:4.1.1 The chemical c
30、omposition 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 in Tables 1 and 2.Bars may be ordered to these grade designations and when soordered shall conform to th
31、e 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 3 for carbon steeland Table 4 for alloy steel.4.2 Heat or Cast Analysis:4.2.1 The chemical composition
32、of each heat or cast shall bedetermined by the manufacturer in accordance with TestMethods, Practices, and Terminology A 751.4.2.2 The heat or cast analysis shall conform to the require-ments specified in the product specification or purchase order.These can be the heat chemical range and limit for
33、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 specified as an addedelement to a standar
34、d steel, the percentage of lead is reported as 0.15 to0.35 incl, which is the range commonly specified for this element.4Copies of military specifications, military standards, and federal standardsrequired by contractors in connection with specific procurement functions should beobtained from the pr
35、ocuring activity or as directed by the contracting officer, or fromthe Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave.,Philadelphia, PA 19111-5094, Attn: NPODS.5Available from Automotive Industry Action Group, North Park Plaza, Ste. 830,17117 W. Nine Mile Rd., Southfield, M
36、I 48075.A 29/A 29M 052TABLE 1 Grade Designations and Chemical Compositions 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 0.050100
37、8 0.10 max 0.300.50 0.040 0.0501010 0.080.13 0.300.60 0.040 0.0501011 0.080.13 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.
38、0501019 0.150.20 0.701.00 0.040 0.0501020 0.180.23 0.300.60 0.040 0.0501021 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.
39、040 0.0501034 0.320.38 0.500.80 0.040 0.0501035 0.320.38 0.600.90 0.040 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
40、.60 0.040 0.0501045 0.430.50 0.600.90 0.040 0.0501046 0.430.50 0.701.00 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
41、 0.500.80 0.040 0.0501065 0.600.70 0.600.90 0.040 0.0501069 0.650.75 0.400.70 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.
42、800.93 0.600.90 0.040 0.0501086 0.800.93 0.300.50 0.040 0.0501090 0.850.98 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
43、0.160.231117 0.140.20 1.001.30 0.040 0.080.131118 0.140.20 1.301.60 0.040 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 0.08
44、0.131144 0.400.48 1.351.65 0.040 0.240.331145 0.420.49 0.701.00 0.040 0.040.071146 0.420.49 0.701.00 0.040 0.080.131151 0.480.55 0.701.00 0.040 0.080.13A 29/A 29M 0534.2.3 If requested or required, the heat analysis shall bereported to the purchaser or his representative.4.2.4 Reporting of significa
45、nt figures and rounding shall bein accordance with Test Methods, Practices, and TerminologyA 751.4.3 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 purchase
46、r from finishedbars 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, bu
47、t the severaldeterminations 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 s
48、teel is specifiedor required, the limitations for these elements shall not beapplicable. Because of the degree to which phosphorus andsulfur segregate, the limitations for these elements shall not beapplicable to rephosphorized or resulfurized steels.4.3.3 Samples for product analysis shall be taken
49、 by one ofthe following methods:4.3.3.1 Applicable to small sections whose cross-sectionalarea does not exceed 0.75 in.2500 mm2 such as rounds,Rephosphorized 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 .1213 0.13 max 0.701.00 0.070.12 0.240.33 .1215 0.
