1、Designation: A322 13Standard 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. A number in paren
2、theses 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 Department of Defense.1. Scope1.1 This specification covers hot-wrought alloy steel bars.Bar applicatio
3、ns 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 available are covered inSpec
4、ification 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 chemical restrictions, m
5、etallurgical characteristics,heat treatment, or surface finishes which the purchaser mayobtain by designating one or more of the available Supplemen-tary Requirements.2. Referenced Documents2.1 ASTM Standards:2A29/A29M Specification for Steel Bars, Carbon and Alloy,Hot-Wrought, General Requirements
6、forA304 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 Macroetch Testing Steel Bars, Billets,Blooms, an
7、d 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 (weight or number of bars),3.1.2 Name of materia
8、l (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 8),3.1.9 Additions to the specification and
9、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 herein.5. Materials and Manufacture5.1 The ste
10、el 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 remelting. Where secondary meltingis employed, th
11、e 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 piping and undue segregation.5.3 DeoxidationK
12、illed steel is required.5.3.1 The purchaser may designate that the steel be made tocoarse or fine austenitic grain size. (See Supplementary Re-quirement S9 or S10.)5.4 Slow CoolingImmediately after hot forming, the barsshall be allowed to cool to a temperature below the criticalrange under suitable
13、conditions to prevent imperfectionscaused by too rapid cooling.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 May 1, 2013. Published June 2013. Ori
14、ginallyapproved in 1947. Last previous edition approved in 2007 as A322 07. DOI:10.1520/A0322-13.2For 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 standards Docum
15、ent Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1TABLE 1 Grade Designations and Chemical Compositions of Hot-Wrought Alloy Steel BarsA,BUNSDesignationCGradeDDesignationsChemical Composition, Ranges a
16、nd 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 0.430.48 1.601.90 0.035 0.040 0.
17、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 . . 0.200.30G40280 4028 0.250.30 0.700.90 0
18、.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 0.150.35 . . 0.200.30G40420 4042
19、 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 4130 0.280.33 0.400.60 0.035 0.
20、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 0.751.00 0.035 0.040 0.150.35 . 0.801
21、.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 0.150.35 . 0.700.90 0.250.35G43200 4
22、320 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 0.150.35 . . 0.450.60G44220 4422 0
23、.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 0.170.22 0.450.65 0.035 0.040 0.150
24、.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 0.700.90 0.035 0.040 0.150.35 0.901.20
25、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 0.035 0.040 0.150.35 3.253.75 . 0.20
26、0.30G50150 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 0.170.22 0.700.90 0.035 0.040 0.
27、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 . 0.700.90 .G51450 5145 0.430.48 0.700.90
28、 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 0.150.35 . 0.700.90 .G50986 E50100
29、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 0.160.21 0.500.70 0.035 0.040 0.150
30、.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 0.150.20 0.700.90 0.035 0.040 0.
31、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 0.150.25G86270 8627 0.250.30 0.700.90 0.035 0
32、.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 1325.5 Thermal TreatmentVarious thermal treatments such asannealing, stress relief, quench and temper, normalize, etc., areavailable. Such treatments must be specified as a Suppl
33、emen-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 thisspecification may be other than listed in Table 1 when agreedupon between the manufactu
34、rer 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,and flakes. Within the limits of good manufacturing andinspection practices,
35、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 DescalingWhen descaled bars are required, Supple-mentary Requirement S12 on Pi
36、ckling 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 specification, together with a report of thecast or heat analysis test results for the sp
37、ecified 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 Requirements are specified, thereport shall include a statement of compliance with thereq
38、uirement 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, Ranges and Limits, %Carbon Manganese Phosphorus,maxSulfur,EmaxSiliconFNickel C
39、hromium 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 0.400.70 0.400.60 0.150.25G86450 8645 0.430.48 0.751.00 0.035 0.040 0.150.35
40、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 0.150.35 0.400.70 0.400.60 0.150.25G87200 8720 0.180.23 0.700.90 0.035 0.040 0
41、.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 0.035 0.040 1.201.60 . 0.600.80 .G92550 9255 0.510.59 0.700.95 0.035 0.040 1.802.2
42、0 . . .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 SteelsGG50441 50B44 0.430.48 0.751.00 0.035 0.040 0.150.35 . 0.200.60 .G50461 50B4
43、6 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 0.040 0.150.35 . 0.700.90 .G81451 81B45 0.430.48 0.751.00 0.035 0.040 0.150.35 0.2
44、00.40 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 present in alloy steels which are not specified or required. These elements are
45、 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 %. Such steels are identified by inserting the letter “L” between the second and
46、 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
47、the respective AISI compositions.EWhere minimum and maximum sulfur contents are shown, it is indicative of resulfurized steel.FSilicon may be specified by the purchaser as 0.10 % maximum. The need for 0.10 % maximum generally relates to severely cold-formed parts.GThese steels can be expected to con
48、tain 0.0005 to 0.003 % boron. If the usual titanium additive is not permitted, the steels can be expected to contain up to 0.005 %boron.A322 133SUPPLEMENTARY REQUIREMENTSOne or more of the following Supplementary Requirements shall apply when specified by thepurchaser.S1. Axle Shaft QualityS1.1 Axle shaft quality applies to hot-rolled steel barsintended for the manufacture of power-driven axle shafts of theautomotive or truck
