1、Designation: A866 09A866 14Standard Specification forMedium Carbon Anti-Friction Bearing Steel1This standard is issued under the fixed designation A866; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A n
2、umber in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers medium carbon bearing quality steel to be used in the manufacture of anti-friction bearings.1.2 Supplementary
3、 requirements of an optional nature are provided and when desired shall be so stated in the order.1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not consi
4、dered standard.2. Referenced Documents2.1 ASTM Standards:2A29/A29M Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-WroughtA751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel ProductsE45 Test Methods for Determining the Inclusion Content of SteelE
5、112 Test Methods for Determining Average Grain SizeE381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and ForgingsE1019 Test Methods for Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt Alloys byVarious Combustion and Fusion TechniquesE1077 Test Met
6、hods for Estimating the Depth of Decarburization of Steel Specimens2.2 ISO Standard:3ISO 683 Part 17: Ball and Roller Bearing Steels3. Ordering Information3.1 Orders for material under this specification should include the following information:3.1.1 Quantity (weight or pieces),3.1.2 Grade identific
7、ation,3.1.3 ASTM designation and year of issue,3.1.4 Dimensions, and3.1.5 Supplementary requirements, if included.4. Materials and Manufacture4.1 Process:4.1.1 The steel shall be made by a process that is capable of providing a high quality product meeting the requirements of thisspecification.5. Ch
8、emical Composition and Analysis5.1 Typical examples of chemical composition are shown in Table 1. Other compositions may be specified.1 This specification is under the jurisdiction ofASTM Committee A01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.2
9、8on Bearing Steels.Current edition approved Oct. 1, 2009Oct. 1, 2014. Published November 2009November 2014. Originally approved in 1987. Last previous edition approved in 20012009as A866 01.A866 09. DOI: 10.1520/A0866-09.10.1520/A0866-14.2 For referencedASTM standards, visit theASTM website, www.ast
10、m.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, Case postale CP 56, CH-121
11、1,CH-1211 Geneva 20, Switzerland,http:/www.iso.ch.http:/www.iso.org.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict
12、all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,
13、 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States15.2 An analysis of each heat of steel shall be made by the steel manufacturer in accordance with Test Methods, Practices, andTerminology A751. The chemical composition thus determined shall conform to the requiremen
14、ts specified in Table 1 for theordered grade or to other requirements agreed upon between the manufacturer and the purchaser.5.3 Product analysis may be made by the purchaser in accordance with Test Methods, Practices, and Terminology A751.Permissible variations in product analysis shall be in accor
15、dance with Specification A29/A29M.6. Sizes, Shapes, and Dimensional Tolerances6.1 The physical size and shape of the material shall be agreed upon between the manufacturer and the purchaser.6.2 Dimensional tolerances for hot-rolled or hot-rolled and annealed bars, in straight lengths or coils, and c
16、old-finished bars0.500 in. (12.7 mm) and larger in diameter furnished under this specification shall conform to the requirements specified in thelatest edition of Specification A29/A29M.6.3 Dimensional tolerances for cold-finished coils for ball and roller material shall be as shown in Table 2.6.4 C
17、oil tolerances also apply to cold-finished straight lengths under 0.500 in. in diameter.TABLE 1 Chemical CompositionA,BNumberC Name C Mn P (max) S (max) Si Cr Mo V Cu (max) O (max)D Al (max). . . 1030 0.28 to 0.34 0.60 to 0.90 0.025 0.025 0.15 to 0.35 . . . . . . . . . 0.30 0.0020 0.050. . . 1040 0.
18、37 to 0.44 0.60 to 0.90 0.025 0.025 0.15 to 0.35 . . . . . . . . . 0.30 0.0020 0.050. . . 1050 0.48 to 0.55 0.60 to 0.90 0.025 0.025 0.15 to 0.35 . . . . . . . . . 0.30 0.0020 0.050. . . 1541 0.36 to 0.44 1.35 to 1.65 0.025 0.025 0.15 to 0.35 . . . . . . . . . 0.30 0.0020 0.050. . . 1552 0.47 to 0.5
19、5 1.20 to 1.50 0.025 0.025 0.15 to 0.35 . . . . . . . . . 0.30 0.0020 0.050. . . 4130 0.28 to 0.33 0.40 to 0.60 0.025 0.025 0.15 to 0.35 0.80 to 1.10 0.15 to 0.25 . . . 0.30 0.0020 0.050. . . 4140 0.38 to 0.43 0.75 to 1.00 0.025 0.025 0.15 to 0.35 0.80 to 1.10 0.15 to 0.25 . . . 0.30 0.0020 0.050. .
20、 . 4150 0.48 to 0.53 0.75 to 1.00 0.025 0.025 0.15 to 0.35 0.80 to 1.10 0.15 to 0.25 . . . 0.30 0.0020 0.050. . . 5140 0.38 to 0.43 0.70 to 0.95 0.025 0.025 0.15 to 0.35 0.70 to 0.90 . . . . . . 0.30 0.0020 0.050. . . 5150 0.48 to 0.53 0.70 to 0.90 0.025 0.025 0.15 to 0.35 0.70 to 0.90 . . . . . . 0
21、.30 0.0020 0.050. . . 6150 0.48 to 0.53 0.70 to 0.90 0.025 0.025 0.15 to 0.35 0.80 to 1.10 . . . 0.15 min 0.30 0.0020 0.050B40 C56E2 0.52 to 0.60 0.60 to 0.90 0.025 0.015 0.40 max . . . . . . . . . 0.30 0.0020 0.050B41 56Mn4 0.52 to 0.60 0.90 to 1.20 0.025 0.015 0.40 max . . . . . . . . . 0.30 0.002
22、0 0.050B43 43CrMo4 0.40 to 0.46 0.60 to 0.90 0.025 0.015 0.40 max 0.90 to 1.20 0.15 to 0.30 . . . 0.30 0.0020 0.050TABLE 1 Chemical CompositionA,BNumberC Name C Mn P (max) S (max) Si Cr Mo V Cu (max) O (max)D Al (max). . . 1030 0.28 to 0.34 0.60 to 0.90 0.025 0.025 0.15 to 0.35 . . . . . . . . . 0.3
23、0 0.0020 0.050. . . 1040 0.37 to 0.44 0.60 to 0.90 0.025 0.025 0.15 to 0.35 . . . . . . . . . 0.30 0.0020 0.050. . . 1050 0.48 to 0.55 0.60 to 0.90 0.025 0.025 0.15 to 0.35 . . . . . . . . . 0.30 0.0020 0.050. . . 1541 0.36 to 0.44 1.35 to 1.65 0.025 0.025 0.15 to 0.35 . . . . . . . . . 0.30 0.0020
24、0.050. . . 1552 0.47 to 0.55 1.20 to 1.50 0.025 0.025 0.15 to 0.35 . . . . . . . . . 0.30 0.0020 0.050. . . 4130 0.28 to 0.33 0.40 to 0.60 0.025 0.025 0.15 to 0.35 0.80 to 1.10 0.15 to 0.25 . . . 0.30 0.0020 0.050. . . 4140 0.38 to 0.43 0.75 to 1.00 0.025 0.025 0.15 to 0.35 0.80 to 1.10 0.15 to 0.25
25、 . . . 0.30 0.0020 0.050. . . 4150 0.48 to 0.53 0.75 to 1.00 0.025 0.025 0.15 to 0.35 0.80 to 1.10 0.15 to 0.25 . . . 0.30 0.0020 0.050. . . 5140 0.38 to 0.43 0.70 to 0.95 0.025 0.025 0.15 to 0.35 0.70 to 0.90 . . . . . . 0.30 0.0020 0.050. . . 5150 0.48 to 0.53 0.70 to 0.90 0.025 0.025 0.15 to 0.35
26、 0.70 to 0.90 . . . . . . 0.30 0.0020 0.050. . . 6150 0.48 to 0.53 0.70 to 0.90 0.025 0.025 0.15 to 0.35 0.80 to 1.10 . . . 0.15 min 0.30 0.0020 0.050B40 C56E2 0.52 to 0.60 0.60 to 0.90 0.025 0.015 0.40 max . . . . . . . . . 0.30 0.0020 0.050B41 56Mn4 0.52 to 0.60 0.90 to 1.20 0.025 0.015 0.40 max .
27、 . . . . . . . . 0.30 0.0020 0.050B43 43CrMo4 0.40 to 0.46 0.60 to 0.90 0.025 0.015 0.40 max 0.90 to 1.20 0.15 to 0.30 . . . 0.30 0.0020 0.050A Elements not quoted shall not be intentionally added to the steel without the agreement of the purchaser.B Intentional additions of calcium or calcium alloy
28、s for deoxidation or inclusion shape control are not permitted unless specifically approved by the purchaser.C Steels B40, B41, and B43 meet the requirements of ISO 683, Part 17, Second Edition, Table 3.D Oxygen content applies to product analysis and shall be determined in accordance with Test Meth
29、ods E1019.TABLE 2 Dimensional Tolerances for Cold-Finished CoilsSize, in. (mm) Total Tolerance, in. (mm)Through 0.096 (2.44) 0.002 (0.05)Over 0.096 (2.44) to 0.270 (6.86), incl 0.003 (0.08)Over 0.270 (6.86) to 0.750 (19.1), incl 0.004 (0.10)TABLE 2 Dimensional Tolerances for Cold-Finished CoilsSize,
30、 in. (mm) Total Tolerance, in. (mm)Through 0.096 (2.44) 0.002 (0.05)Over 0.096 (2.44) to 0.270 (6.86), incl 0.003 (0.08)Over 0.270 (6.86) to 0.750 (19.1), incl 0.004 (0.10)A866 1427. Quality Tests7.1 The supplier shall be held responsible for the quality of the material furnished and shall make the
31、necessary tests to ensurethis quality. The supplier shall be required to report on the results of the micro-inclusion rating tests detailed below. Quality testsshown in 7.2 through 7.3 are based upon procedures established in Test Methods E45.7.2 SamplingSamples taken in accordance with the followin
32、g paragraphs shall be obtained from 4 by 4 in. (102 by 102 mm)rolled billets or forged sections. Tests may be made on smaller or larger sections by agreement with the purchaser. A minimum3 to 1 reduction of rolled billets or forged sections is required for strand cast products.7.2.1 For top poured p
33、roducts, a minimum of six samples representing the top and bottom of the first, middle, and last usableingots shall be examined.7.2.2 For bottom poured products, a minimum of six samples shall be examined and they shall represent the top and bottomof three ingots. One ingot shall be taken at random
34、from the first usable plate poured, one ingot, at random, from the usable platepoured nearest to the middle of the heat, and one ingot, at random, from the last usable plate poured. When two usable platesconstitute a heat, two of the sample ingots shall be selected from the second usable plate poure
35、d. Where a single usable plateconstitutes a heat, any three random ingots may be selected. Other methods of sampling shall be as agreed upon by manufacturerand purchaser.7.2.3 For strand cast products, a minimum of six samples representing the first, middle, and last portion of the heat cast shallbe
36、 examined. At least one sample shall be taken from each strand.7.3 Inclusion RatingThe specimens shall be 38 by 34 in. (9.5 by 19.1 mm) and shall be taken from an area halfway betweenthe center and outside of the billet. The polished face shall be longitudinal to the direction of rolling. The scale
37、used for rating thespecimens shall be the Jernkontoret chart described in Test Methods E45, Plate I-r.I-A. Fields with sizes or numbers of all typesof inclusions intermediate between configurations shown on the chart shall be classified as the lesser of the rating number. Theworst field of each incl
38、usion type from each specimen shall be recorded as the rating for the specimen. Two thirds of all specimensand at least one from each ingot tested, or from the first, middle, and last portion of the strands tested, as well as the average ofall specimens, shall not exceed the rating specified in Tabl
39、e 3.8. Grain Size8.1 The grain size shall be from 5 to 8 as defined in Test Methods E112 (see Plate 4, Austenitic Grain Size in Steels), withoccasional grains as large as No. 3 permissible. Material not meeting this requirement may be normalized at 1700F (925C) orabove, and retested.9. Decarburizati
40、on and Surface Imperfections9.1 Decarburization and surface imperfections shall not exceed the limits specified in Tables 4 and 5. Decarburization shall bemeasured using the microscopical methods described in Test Methods E1077.10. Microstructure and Hardness10.1 Material may be ordered as hot rolle
41、d or thermally treated. When thermally treated, the acceptance criteria formicrostructure and hardness shall be agreed upon between the manufacturer and the purchaser. No hardness limits shall apply foras-hot-rolled materials.11. Inspection11.1 The manufacturer shall afford the purchasers inspector
42、all reasonable facilities necessary to satisfy him that the materialis being produced and furnished in accordance with this specification. Mill inspection by the purchaser shall not interfereunnecessarily with the manufacturers operations. All tests and inspections shall be made at the place of manu
43、facture, unlessotherwise agreed to.TABLE 3 Inclusion RatingRating UnitsThin Series Heavy SeriesA 2.5 A 1.5B 2.0 B 1.0C 0.5 C 0.5D 1.0 D 1.0TABLE 3 Inclusion RatingRating UnitsThin Series Heavy SeriesA 2.5 A 1.5B 2.0 B 1.0C 0.5 C 0.5D 1.0 D 1.0A866 14312. Certification and Reports12.1 Upon request of
44、 the purchaser in the contract or order, a manufacturers certification that the material was manufacturedand tested in accordance with this specification, together with a report of the test results, shall be furnished at the time of shipment.Special requirements agreed to at the time of purchase mus
45、t be noted on the certification.SUPPLEMENTARY REQUIREMENTSOne or more of the supplementary requirements described below apply when included in thepurchasers order or contract. When so included, a supplementary requirement shall have the sameforce as if it were in the body of the specification. Suppl
46、ementary requirements details not fullydescribed shall be agreed upon between the purchaser and the supplier, but shall not negate any of therequirements in the body of the specification.S1. Titanium ContentS1.1 The purchaser may specify that the analysis of titanium be provided by agreement with th
47、e steel manufacturer.TABLE 4 Decarburization and Surface Imperfections for Coils and Bars for Balls and RollersSize, in. (mm) Decarburization or Surface Imperfectionsper Side, max, in. (mm)Hot-Rolled orHot-Rolled AnnealedCold-FinishedAnnealedThrough 0.250 (6.35) 0.005 (0.13) 0.003 (0.08)Over 0.250 (
48、6.35) to 0.500 (12.7), incl 0.006 (0.15) 0.004 (0.10)Over 0.500 (12.7) to 0.750 (19.1), incl 0.008 (0.20) 0.006 (0.15)Over 0.750 (19.1) to 1.000 (25.4), incl 0.010 (0.25) 0.008 (0.20)TABLE 4 Decarburization and Surface Imperfections for Coils and Bars for Balls and RollersSize, in. (mm)Decarburizati
49、on or Surface Imperfectionsper Side, max, in. (mm)Hot-Rolled orHot-Rolled AnnealedCold-FinishedAnnealedThrough 0.250 (6.35) 0.005 (0.13) 0.003 (0.08)Over 0.250 (6.35) to 0.500 (12.7), incl 0.006 (0.15) 0.004 (0.10)Over 0.500 (12.7) to 0.750 (19.1), incl 0.008 (0.20) 0.006 (0.15)Over 0.750 (19.1) to 1.000 (25.4), incl 0.010 (0.25) 0.008 (0.20)TABLE 5 Decarburization and Surface Imperfections for Bars and TubesSize, in. (mm) Decarburization or Surface Imperfections per Side, max, in. (mm)Hot-Rolled Bars Hot-Rolled Annealed Cold-Finished AnnealedBars Tubes Bars Tubes
