1、Designation: A 322 07Standard Specification forSteel Bars, Alloy, Standard Grades1This standard is issued under the fixed designation A 322; 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 par
2、entheses indicates the year of last reapproval. Asuperscript 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 specification covers hot-wrought alloy steel bars.Bar applic
3、ations 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 PracticeA 400.1.2 The bars shall be furnished in the grades specified inTable 1. Sections and sizes of bar steel available are covered i
4、nSpecification A 29/A 29M. 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 restrict
5、ions, metallurgical 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:2A 29/A 29M Specification for Steel Bars, Carbon andAlloy,Hot-Wrought, General Requi
6、rements forA 304 Specification for Carbon and Alloy Steel Bars Sub-ject to End-Quench Hardenability RequirementsA 400 Practice for Steel Bars, Selection Guide, Composi-tion, and Mechanical PropertiesE112 Test Methods for Determining Average Grain SizeE 381 Method of Macroetch Testing Steel Bars, Bil
7、lets,Blooms, and ForgingsE 527 Practice for Numbering Metals and Alloys (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 material (hot-wrought
8、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 SupplementaryRe
9、quirements, 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 A 29/A 29M, unless otherwise provided herein.5. Materials and Manufacture5.1 The steel shall be m
10、ade by one or more of the followingprimary processes: open-hearth, basic-oxygen, or electric-furnace. The primary melting may incorporate separate degas-sing or refining and may be followed by secondary meltingusing electro-slag remelting or vacuum arc remelting. Wheresecondary melting is employed,
11、the heat shall be defined as allof the cast product remelted 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 Deoxidatio
12、nKilled 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 suitabl
13、e conditions to prevent imperfectionscaused by too rapid cooling.5.5 Thermal TreatmentVarious thermal treatments such asannealing, stress relief, quench and temper, normalize, etc., areavailable. Such treatments must be specified as a Supplemen-tary Requirement.1This specification is under the juris
14、diction 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, 2007. Published May 2007. Originallyapproved in 1947. Last previous edition approved in 2006 as A 322 06.2For referenced ASTM stand
15、ards, 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 section appears at the end of this standard.Copyright ASTM Inter
16、national, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6. Chemical Composition6.1 The heat analysis shall conform to the requirements forchemical composition in Table 1 for the grade specified.TABLE 1 Grade Designations and Chemical Compositions of Hot-Wrought
17、Alloy Steel BarsA,BUNSDesignationCGradeDDesignationsChemical Composition, Ranges and Limits, %Carbon Manganese Phospho-rus, 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 0.38
18、0.43 1.601.90 0.035 0.040 0.150.35 . . .G13450 1345 0.430.48 1.601.90 0.035 0.040 0.150.35 . . .G40230 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 0.035 0.150.35 . . 0.200.300.050G40270 4027 0.250.30 0.700.90 0.035 0.040 0.150.35 . . 0.200.30G40280 402
19、8 0.250.30 0.700.90 0.035 0.035 0.150.35 . . 0.200.300.050G40370 4037 0.350.40 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 . . 0.200.30G41180 4118 0.180.23 0.700.90 0.035 0.040 0.150.35 . 0.400.60 0.080.15G41200 0.180.23 0.901.20 0.035 0.040 0.150.35 .
20、0.400.60 0.130.20G41210 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 0.040 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 4
21、142 0.400.45 0.751.00 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 0.751.0
22、0 0.035 0.040 0.150.35 . 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 0.200.30G46150 4615 0.130.18 0.450
23、.65 0.035 0.040 0.150.35 1.652.00 . 0.200.30G46200 4620 0.170.22 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 0.130.18 0.700.90 0.035 0.040 0.150.35
24、0.701.00 0.450.65 0.450.60G47200 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.
25、75 . 0.200.30G51170 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 0.150.35 . 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
26、 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 .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 .G51986 E51100 0.981.
27、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 .VanadiumG61180 6118 0.160.21 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 minMolybdenumG86150 8615 0.130.18 0.700.90 0.
28、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 0.150.35 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
29、.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 0.040 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 0.150.25G86370 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.
30、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 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 0.150.25G87200 872
31、0 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 0.200.30A322072TABLE 1 ContinuedUNSDesignationCGradeDDesignationsChemical Composition, Ranges and Limits, %Carbon Manganese Phospho-rus, maxSulfur,EmaxSiliconFNicke
32、l Chromium MolybdenumG88220 8822 0.200.25 0.751.00 0.035 0.040 0.150.35 0.400.70 0.400.60 0.300.40G92590 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 . . .Standard Boron SteelsGG50441 50B44 0.430.48 0.751.00 0.035 0.040 0.150.35 . 0.200.6
33、0 .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 0.040 0.150.35 . 0.700.90 .G81451 81B45 0.430.48 0.751.00 0.035 0.04
34、0 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 present in alloy steels which are not specified or required. Thes
35、e 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 %. Such steels are identified by inserting the letter “L” between
36、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 E 527.DGrade designations correspond to the respective AISI and SAE designations. Grade compositions
37、 correspond to 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
38、expected to contain 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.6.2 The composition of the steel furnished under thisspecification may be other than listed in Table 1 when agreedupon between the manufacturer and t
39、he purchaser as out-linedin Specification A 29/A 29M (Table on Heat Analysis Chemi-cal Ranges 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, the b
40、ars 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 Picklin
41、g 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 specifi
42、ed elements, shallbe furnished. The report shall include the name of the manu-facturer,ASTM designation and year date and revision letter, ifany, type and grade, heat number, and size.8.2 When Supplementary Requirements are specified, thereport shall include a statement of compliance with therequire
43、ment of the results of tests when the requirementinvolves measured test values.9. Keywords9.1 alloy steel bars; hot-wrought steel bars; steel barsSUPPLEMENTARY REQUIREMENTSOne or more of the following Supplementary Requirements shall apply when specified by thepurchaser.S1. Axle Shaft QualityS1.1 Ax
44、le shaft quality applies to hot-rolled steel barsintended for the manufacture of power-driven axle shafts of theautomotive or truck type, which by their design or method ofmanufacture are not machined all over or have less thanrecommended stock removed for the proper clean-up of normalsurface imperf
45、ections.S2. Ball and Roller Bearing Quality and Bearing QualityS2.1 This quality applies to steel intended for antifrictionbearings.S3. Cold Shearing QualityS3.1 When the bar size exceeds certain limits, it is recom-mended that cold shearing quality steel be ordered. This qualitywill provide charact
46、eristics which permit cold shearing withoutcracking. The producer should be consulted in establishing theproper practice.S4. Cold Working QualityS4.1 This classification encompasses bars subject to severecold plastic deformation such as, but not limited to, upsetting,heading, forging, forward or bac
47、kward extrusion.A322073S4.2 If the type of steel or chemical composition does nothave adequate cold working characteristics, appropriate ther-mal treatments should be specified.S4.3 When Supplementary Requirement S1 is specified, thebars shall be produced by manufacturing practices and sub-jected to
48、 mill tests and inspection and freedom from injurioussurface imperfections to the extent that the bars shall besuitable for the manufacture of identified parts. The qualityrequirements of individual application vary.S5. Aircraft Quality or Magnaflux QualityS5.1 These quality designations apply to alloy steels forimportant or highly stressed parts of aircraft and for othersimilar or corresponding purposes involving additional strin-gent requirements, such as magnetic particle inspection, addi-tional discard, macroetch tests (see Me
