1、Designation: A322 13 (Reapproved 2018)Standard Specification forSteel Bars, Alloy, Standard Grades1This standard is issued under the fixed designation A322; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、 A number in parentheses indicates the year of last reapproval. Asuperscript 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. Scope1.1 This specification covers hot-wrought alloy st
3、eel bars.Bar applications include forging, heat treating, cold drawing,machining and many structural components (Note 1).NOTE 1A guide for the selection of steel bars is contained in PracticeA400.1.2 The bars shall be furnished in the grades specified inTable 1. Sections and sizes of bar steel avail
4、able are covered inSpecification A29/A29M. Hot-wrought alloy steel bars areproduced in cut lengths and coils; the manufacturer should beconsulted regarding sections and sizes available in coils,produced to a chemical composition.1.3 Some applications may require superior surface quality,or special c
5、hemical restrictions, metallurgical characteristics,heat treatment, or surface finishes which the purchaser mayobtain by designating one or more of the available Supplemen-tary Requirements.1.4 This international standard was developed in accor-dance with internationally recognized principles on sta
6、ndard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A29/A29M Specification for General Requireme
7、nts for SteelBars, Carbon and Alloy, Hot-WroughtA304 Specification for Carbon and Alloy Steel Bars Subjectto End-Quench Hardenability RequirementsA400 Practice for Steel Bars, Selection Guide, Composition,and Mechanical PropertiesE112 Test Methods for Determining Average Grain SizeE381 Method of Mac
8、roetch Testing Steel Bars, Billets,Blooms, and ForgingsE527 Practice for Numbering Metals and Alloys in theUnified Numbering System (UNS)3. Ordering Information3.1 Orders under this specification should include the fol-lowing as required to describe adequately the desired material:3.1.1 Quantity (we
9、ight or number of bars),3.1.2 Name of material (hot-wrought alloy steel bars),3.1.3 Dimensions,3.1.4 ASTM designation,3.1.5 Deoxidation practice (see 5.3),3.1.6 Grade designation or chemical composition limits (see6.1 and Table 1),3.1.7 Grain size if required,3.1.8 Test reports, if required (Section
10、 8),3.1.9 Additions to the specification and SupplementaryRequirements, if required, and3.1.10 Application.4. General Requirements4.1 Material furnished under this specification shall con-form to the applicable requirements of the current edition ofSpecification A29/A29M, unless otherwise provided h
11、erein.5. Materials and Manufacture5.1 The steel shall be made by one or more of the followingprimary processes: basic-oxygen or electric-furnace. The pri-mary melting may incorporate separate degassing or refiningand may be followed by secondary melting using electro-slagremelting or vacuum arc reme
12、lting. Where secondary meltingis employed, the heat shall be defined as all of the cast productremelted from a single primary heat.5.2 The steel shall be furnished as strand cast or ingot cast,unless otherwise specified.5.2.1 DiscardA sufficient discard shall be made to securefreedom from injurious
13、piping and undue segregation.5.3 DeoxidationKilled steel is required.1This specification 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 Sept. 1, 2018. Published Septem
14、ber 2018. Originallyapproved in 1947. Last previous edition approved in 2013 as A32213. DOI:10.1520/A032213R18.2For 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 s
15、tandards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the
16、Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1TABLE 1 Grade Designations and Chemical Compositions of Hot-Wrought Alloy Steel BarsA, BUNSDesignationCGradeDDesignatio
17、nsChemical Composition, Ranges and Limits, %Carbon Manganese Phosphorus,maxSulfur,EmaxSiliconFNickel Chromium MolybdenumG13300 1330 0.280.33 1.601.90 0.035 0.040 0.150.35 . . .G13350 1335 0.330.38 1.601.90 0.035 0.040 0.150.35 . . .G13400 1340 0.380.43 1.601.90 0.035 0.040 0.150.35 . . .G13450 1345
18、0.430.48 1.601.90 0.035 0.040 0.150.35 . . .G40120 4012 0.090.14 0.751.00 0.035 0.040 0.150.35 . . 0.150.25G40230 4023 0.200.25 0.700.90 0.035 0.040 0.150.35 . . 0.200.30G40240 4024 0.200.25 0.700.90 0.035 0.0350.050 0.150.35 . . 0.200.30G40270 4027 0.250.30 0.700.90 0.035 0.040 0.150.35 . . 0.200.3
19、0G40280 4028 0.250.30 0.700.90 0.035 0.0350.050 0.150.35 . . 0.200.30G40320 4032 0.300.35 0.700.90 0.035 0.040 0.150.35 . . 0.200.30G40370 4037 0.350.40 0.700.90 0.035 0.040 0.150.35 . . 0.200.30G40420 4042 0.400.45 0.700.90 0.035 0.040 0.150.35 . . 0.200.30G40470 4047 0.450.50 0.700.90 0.035 0.040
20、0.150.35 . . 0.200.30G40420 4042 0.400.45 0.700.90 0.035 0.040 0.150.35 . . 0.200.30G41180 4118 0.180.23 0.700.90 0.035 0.040 0.150.35 . 0.400.60 0.080.15G41200 4120 0.180.23 0.901.20 0.035 0.040 0.150.35 . 0.400.60 0.130.20G41210 4121 0.180.23 0.751.00 0.035 0.040 0.150.35 . 0.450.65 0.200.30G41300
21、 4130 0.280.33 0.400.60 0.035 0.040 0.150.35 . 0.801.10 0.150.25G41350 4135 0.330.38 0.700.90 0.035 0.040 0.150.35 . 0.801.10 0.150.25G41370 4137 0.350.40 0.700.90 0.035 0.040 0.150.35 . 0.801.10 0.150.25G41400 4140 0.380.43 0.751.00 0.035 0.040 0.150.35 . 0.801.10 0.150.25G41420 4142 0.400.45 0.751
22、.00 0.035 0.040 0.150.35 . 0.801.10 0.150.25G41450 4145 0.430.48 0.751.00 0.035 0.040 0.150.35 . 0.801.10 0.150.25G41470 4147 0.450.50 0.751.00 0.035 0.040 0.150.35 . 0.801.10 0.150.25G41500 4150 0.480.53 0.751.00 0.035 0.040 0.150.35 . 0.801.10 0.150.25G41610 4161 0.560.64 0.751.00 0.035 0.040 0.15
23、0.35 . 0.700.90 0.250.35G43200 4320 0.170.22 0.450.65 0.035 0.040 0.150.35 1.652.00 0.400.60 0.200.30G43400 4340 0.380.43 0.600.80 0.035 0.040 0.150.35 1.652.00 0.700.90 0.200.30G43406 E4340 0.380.43 0.650.85 0.025 0.025 0.150.35 1.652.00 0.700.90 0.200.30G44190 4419 0.180.23 0.450.65 0.035 0.040 0.
24、150.35 . . 0.450.60G44220 4422 0.200.25 0.700.90 0.035 0.040 0.150.35 . . 0.350.45G44270 4427 0.240.29 0.700.90 0.035 0.040 0.150.35 . . 0.350.45G46150 4615 0.130.18 0.450.65 0.035 0.040 0.150.35 1.652.00 . 0.200.30G46170 4617 0.160.21 0.400.65 0.030 0.040 0.150.35 1.652.00 . 0.200.30G46200 4620 0.1
25、70.22 0.450.65 0.035 0.040 0.150.35 1.652.00 . 0.200.30G46210 4621 0.180.23 0.700.90 0.035 0.040 0.150.35 1.652.00 . 0.200.30G46260 4626 0.240.29 0.450.65 0.035 0.040 0.150.35 0.701.00 . 0.150.25G47150 4715 0.130.18 0.700.90 0.035 0.040 0.150.35 0.701.00 0.450.65 0.450.60G47180 4718 0.160.21 0.700.9
26、0 0.035 0.040 0.150.35 0.901.20 0.350.55 0.300.40G47200 4720 0.170.22 0.500.70 0.035 0.040 0.150.35 0.901.20 0.350.55 0.150.25G48150 4815 0.130.18 0.400.60 0.035 0.040 0.150.35 3.253.75 . 0.200.30G48170 4817 0.130.20 0.400.60 0.035 0.040 0.150.35 3.253.75 . 0.200.30G48200 4820 0.180.23 0.500.70 0.03
27、5 0.040 0.150.35 3.253.75 . 0.200.30G50150 5015 0.120.17 0.300.50 0.035 0.040 0.150.35 . 0.300.50 .G50460 5046 0.430.48 0.751.00 0.035 0.040 0.150.35 . 0.200.35 .G51150 5115 0.130.18 0.700.90 0.035 0.040 0.150.35 . 0.700.90 .G51170 5117 0.150.20 0.700.90 0.035 0.040 0.150.35 . 0.700.90 .G51200 5120
28、0.170.22 0.700.90 0.035 0.040 0.150.35 . 0.700.90 .G51300 5130 0.280.33 0.700.90 0.035 0.040 0.150.35 . 0.801.10 .G51320 5132 0.300.35 0.600.80 0.035 0.040 0.150.35 . 0.751.00 .G51350 5135 0.330.38 0.600.80 0.035 0.040 0.150.35 . 0.801.05 .G51400 5140 0.380.43 0.700.90 0.035 0.040 0.150.35 . 0.700.9
29、0 .G51450 5145 0.430.48 0.700.90 0.035 0.040 0.150.35 . 0.700.90 .G51470 5147 0.460.51 0.700.95 0.035 0.040 0.150.35 . 0.851.15 .G51500 5150 0.480.53 0.700.90 0.035 0.040 0.150.35 . 0.700.90 .G51550 5155 0.510.59 0.700.90 0.035 0.040 0.150.35 . 0.700.90 .G51600 5160 0.560.64 0.751.00 0.035 0.040 0.1
30、50.35 . 0.700.90 .G50986 E50100 0.981.10 0.250.45 0.025 0.025 0.150.35 . 0.400.60 .G51986 E51100 0.981.10 0.250.45 0.025 0.025 0.150.35 . 0.901.15 .G52986 E52100 0.981.10 0.250.45 0.025 0.025 0.150.35 . 1.301.60 .G52985 52100 0.931.05 0.250.45 0.025 0.015 0.150.35 . 1.351.60 .VanadiumG61180 6118 0.1
31、60.21 0.500.70 0.035 0.040 0.150.35 . 0.500.70 0.100.15G61500 6150 0.480.53 0.700.90 0.035 0.040 0.150.35 . 0.801.10 0.15 minMolybdenumG81150 8115 0.130.18 0.700.90 0.035 0.040 0.150.35 0.200.40 0.300.50 0.080.15G86150 8615 0.130.18 0.700.90 0.035 0.04 0.150.35 0.400.70 0.400.60 0.150.25G86170 8617
32、0.150.20 0.700.90 0.035 0.040 0.150.35 0.400.70 0.400.60 0.150.25G86200 8620 0.180.23 0.700.90 0.035 0.04 0.150.35 0.400.70 0.400.60 0.150.25G86220 8622 0.200.25 0.700.90 0.035 0.040 0.150.35 0.400.70 0.400.60 0.150.25G86250 8625 0.230.28 0.700.90 0.035 0.040 0.150.35 0.400.70 0.400.60 0.150.25G8627
33、0 8627 0.250.30 0.700.90 0.035 0.040 0.150.35 0.400.70 0.400.60 0.150.25G86300 8630 0.280.33 0.700.90 0.035 0.040 0.150.35 0.400.70 0.400.60 0.150.25A322 13 (2018)25.3.1 The purchaser may designate that the steel be made tocoarse or fine austenitic grain size. (See Supplementary Re-quirement S9 or S
34、10.)5.4 Slow CoolingImmediately after hot forming, the barsshall be allowed to cool to a temperature below the criticalrange under suitable conditions to prevent imperfectionscaused by too rapid cooling.5.5 Thermal TreatmentVarious thermal treatments such asannealing, stress relief, quench and tempe
35、r, normalize, etc., areavailable. Such treatments must be specified as a Supplemen-tary Requirement.6. Chemical Composition6.1 The heat analysis shall conform to the requirements forchemical composition in Table 1 for the grade specified.6.2 The composition of the steel furnished under thisspecifica
36、tion may be other than listed in Table 1 when agreedupon between the manufacturer and the purchaser as out-linedin Specification A29/A29M (Table on Heat Analysis ChemicalRanges and Limits of Alloy Steel Bars).7. Workmanship, Finish, and Appearance7.1 WorkmanshipThe bars shall be free of pipe, cracks
37、,and flakes. Within the limits of good manufacturing andinspection practices, the bars shall be free of injurious seams,laps, segregation, or other imperfections which due to theirnature, degree, or extent, will interfere with the use of thematerial in machining or fabrication of suitable parts.7.2
38、DescalingWhen descaled bars are required, Supple-mentary Requirement S12 on Pickling or S13 on Cleaningmust be specified.8. Certification and Test Reports8.1 When specified by the purchaser, a manufacturerscertification that the material was manufactured and tested inaccordance with this specificati
39、on, together with a report of thecast or heat analysis test results for the specified elements, shallbe furnished. The report shall include the name of themanufacturer, ASTM designation and year date and revisionletter, if any, type and grade, heat number, and size.8.2 When Supplementary Requirement
40、s are specified, thereport shall include a statement of compliance with therequirement of the results of tests when the requirementinvolves measured test values.9. Keywords9.1 alloy steel bars; hot-wrought steel bars; steel barsTABLE 1 ContinuedUNSDesignationCGradeDDesignationsChemical Composition,
41、Ranges and Limits, %Carbon Manganese Phosphorus,maxSulfur,EmaxSiliconFNickel Chromium MolybdenumG86370 8637 0.350.40 0.751.00 0.035 0.040 0.150.35 0.400.70 0.400.60 0.150.25G86400 8640 0.380.43 0.751.00 0.035 0.040 0.150.35 0.400.70 0.400.60 0.150.25G86420 8642 0.400.45 0.751.00 0.035 0.040 0.150.35
42、 0.400.70 0.400.60 0.150.25G86450 8645 0.430.48 0.751.00 0.035 0.040 0.150.35 0.400.70 0.400.60 0.150.25G86500 8650 0.480.53 0.751.00 0.035 0.040 0.150.35 0.400.70 0.400.60 0.150.25G86550 8655 0.510.59 0.751.00 0.035 0.040 0.150.35 0.400.70 0.400.60 0.150.25G86600 8660 0.560.64 0.751.00 0.035 0.040
43、0.150.35 0.400.70 0.400.60 0.150.25G87200 8720 0.180.23 0.700.90 0.035 0.040 0.150.35 0.400.70 0.400.60 0.200.30G87400 8740 0.380.43 0.751.00 0.035 0.040 0.150.35 0.400.70 0.400.60 0.200.30G88220 8822 0.200.25 0.751.00 0.035 0.040 0.150.35 0.400.70 0.400.60 0.300.40G92540 9254 0.510.59 0.600.80 0.03
44、5 0.040 1.201.60 . 0.600.80 .G92550 9255 0.510.59 0.700.95 0.035 0.040 1.802.20 . . .G92590 9259 0.560.64 0.751.00 0.035 0.040 0.701.10 . 0.450.65 .G92600 9260 0.560.64 0.751.00 0.035 0.040 1.802.20 . . .G93100 9310 0.080.13 0.450.65 0.025 0.025 0.150.30 3.003.50 1.001.40 0.080.15Standard Boron Stee
45、lsGG50441 50B44 0.430.48 0.751.00 0.035 0.040 0.150.35 . 0.200.60 .G50461 50B46 0.440.49 0.751.00 0.035 0.040 0.150.35 . 0.200.35 .G50501 50B50 0.480.53 0.751.00 0.035 0.040 0.150.35 . 0.400.60 .G50601 50B60 0.560.64 0.751.00 0.035 0.040 0.150.35 . 0.400.60 .G51601 51B60 0.560.64 0.751.00 0.035 0.04
46、0 0.150.35 . 0.700.90 .G81451 81B45 0.430.48 0.751.00 0.035 0.040 0.150.35 0.200.40 0.350.55 0.080.15G94171 94B17 0.150.20 0.751.00 0.035 0.040 0.150.35 0.300.60 0.300.50 0.080.15G94301 94B30 0.280.33 0.751.00 0.035 0.040 0.150.35 0.300.60 0.300.50 0.080.15ASmall quantities of certain elements are p
47、resent in alloy steels which are not specified or required. These elements are considered as incidental and may be presentto the following maximum amounts: copper 0.35 %, nickel 0.25 %, chromium 0.20 %, and molybdenum 0.06 %.BStandard alloy steels can be produced with a lead range of 0.15 to 0.35 %.
48、 Such steels are identified by inserting the letter “L” between the second and third numeralsof the number, that is, 41L40. A cast or heat analysis is not determinable when lead is added to the ladle stream.CNew designation established in accordance with Practice E527.DGrade designations correspond to the respective AISI and SAE designations. Grade compositions correspond to the respective AISI compositions.EWhere minimum and ma
