ASTM A499-1989(2008) Standard Specification for Steel Bars and Shapes Carbon Rolled from &x201C T&x201D Rails《“T”字钢轨轧制碳素钢条及型材的标准规范》.pdf

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1、Designation: A 499 89 (Reapproved 2008)Standard Specification forSteel Bars and Shapes, Carbon Rolled from “T” Rails1This standard is issued under the fixed designation A 499; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the yea

2、r of last revision. A number in parentheses 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. Scope1.1 This specification covers carbo

3、n steel bars and shapesproduced from standard rail steel. These bars are furnished inthe as-wrought condition intended for structural use, or bar andshape uses, where high tensile properties are applicable. Thesematerials are available in two strength levels as Grades 50 and60.1.2 The values stated

4、in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:2A1 Specification for Carbon Steel Tee RailsA 29/A 29M Specificat

5、ion for Steel Bars, Carbon andAlloy,Hot-Wrought, General Requirements forA 370 Test Methods and Definitions for Mechanical Testingof Steel Products3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 Rail steel bars and bar size shapes are available in thefollowing sections and nom

6、inal sizes:3.1.1.1 Rounds, Squares, and Round Corner Squares insizes ranging from38 to 114 in. (9.5 to 32 mm).3.1.1.2 Square and Round Edge Flats,58 to 5 in. (15.9 to127 mm), inclusive, in width and thickness from764 to 1 in.(2.8 to 25 mm), inclusive, within 6 lb/ft (8.8 kg/m) limit.3.1.1.3 Hexagons

7、 and Octagons, in sizes12 to 1 in. (12.7to 25 mm) in116-in. (1.6-mm) increments.3.1.1.4 Bar Size Shapes:(1) Equal and Unequal Angles,34 to 3 in. (19.0 to 76 mm)length of legs and thickness ranging from764 to38 in. (2.8 to9.5 mm), inclusive.(2) Tees, 114 ,138 ,112 by18 and316 in. thickness (32,35, 38

8、 mm by 3.2 and 4.8 mm thickness).(3) Channels,1to212 in. (25 to 64 mm), inclusive, indepth and38 to 1 in. (9.5 to 25 mm), inclusive, in width offlange.3.1.1.5 Special Bar Sections:(1) Ovals, from58 to78 in. (15.9 to 22.2 mm) in longestdimension by516 to716 in. (7.9 to 11.1 mm), inclusive, in thesmal

9、l dimension.(2) Diamonds,78 and1316 in. (22.2 and 20.6 mm) in thelongest dimension by58 to34 in. (15.9 to 19.0 mm),inclusive, in the smallest dimension.(3) I-Beams,112 and 218 in. (35 and 54 mm) in width and18 to14 in. (3.2 to 6.4 mm), inclusive, in thickness.(4) U-Bars,114 and 1516 in. (32 and 33 m

10、m) in width and532 to516 in. (4.0 to 7.9 mm) in thickness.(5) Channeled Flats,114 to 2 in. (32 to 51 mm), inclusive,in depth, and316 to38 in. (4.8 to 9.5 mm), inclusive, inthickness.4. Ordering Information4.1 Orders for material under this specification shouldinclude the following information:4.1.1

11、Quantity (weight or number of pieces),4.1.2 Name of material (rail steel carbon bars),4.1.3 Grade of steel (Grade 50 and Grade 60),4.1.4 Dimensions (diameter, thickness, width, etc. andlength),4.1.5 Cross section (rounds, square, hexagon, etc.) (3.1),4.1.6 ASTM designation and date of issue,4.1.7 Ce

12、rtification, if required (Section 11), and4.1.8 End use.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys, and is the direct responsibility of A01.15 onBars.Current edition approved March 1, 2008. Published April 2008. Originallyapproved

13、in 1964. Last previous edition approved in 2002 as A 499 89 (2002).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 Document Summary page onthe ASTM we

14、bsite.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.NOTE 1A typical ordering description is as follows: 10 000 lb, railsteel carbon bars, 1.000 in. diameter by 10 ft, round, ASTM A 499 dated_.5. General Requirements5.1 Material fur

15、nished under this specification shall con-form to the applicable requirements of the current edition ofSpecification A 29/A 29M, unless otherwise provided herein.6. Materials and Manufacture6.1 MaterialThe material shall be hot wrought fromstandard section “T” rails. No other materials, such as thos

16、eknown by the terms “rerolled,” “rail steel equivalent,” or “railsteel quality,” shall be substituted.6.2 Hot FormingThe material shall be produced by hotforming slit railroad rail parts to yield straight lengths in thesections and nominal sizes specified in 3.1.1.6.3 Condition:6.3.1 The material sh

17、all be furnished hot wrought, aswrought.6.3.2 The material shall be furnished in cut lengths or rangesof random lengths, as specified by the purchaser.7. Chemical Composition7.1 The chemical composition of rails does not changeduring use in track, reheating, slitting or rolling; consequently,the com

18、position of rail steel products will fall within the limitsspecified in Specification A1for standard section “T” rails ofopen-hearth, basic-oxygen, electric-furnace, and Bessemerprocess.7.2 Rail steel products are not supplied to definite compo-sition limits. By mutual agreement with the manufacture

19、r,material may be supplied from rails with a desired range ofcarbon and manganese when such rails are available.8. Mechanical Properties8.1 RequirementsThe material as represented by the testspecimens shall conform to the tensile or hardness require-ments specified in Table 1.8.2 Test SpecimensTest

20、specimens may be taken from afull section or a machined section.8.3 Number of TestsOne tension test or one hardness test,at the manufacturers option, shall be made from each lot.Alotshall consist of one section of the same size produced in onecontinuous shift (turn) of operation (normally an 8-h per

21、iod).9. Dimensions and Permissible Variations9.1 DimensionsThe permissible variations in dimensionsshall be in accordance with the requirements specified inTables 2-7. Due to differences in mill facilities, tolerances ofspecial bar sections vary among the manufacturers and suchtolerances are subject

22、 to agreement between manufacturer andpurchaser.9.2 LengthThe permissible variations for length shall bein accordance with the requirements specified in Table 8.9.3 StraightnessVariations in straightness shall not ex-ceed14 in. (6.4 mm) in any 5 ft (1.52 m); or14 in. 3 numberof feet of length divide

23、d by 5 (6.4 mm 3 number of metres oflength divided by 1.52).10. Workmanship, Finish, and Appearance10.1 DescalingThe bars shall be furnished “not des-caled.”11. Certification and Report of Testing11.1 Upon request of the purchaser in the contract or order,a manufacturers certification that the mater

24、ial was manufac-tured and tested in accordance with this specification togetherwith a report of the test results shall be furnished at the time ofshipment.12. Keywords12.1 carbon steel bars; carbon steel shapesTABLE 1 Mechanical RequirementsGrade 50 Grade 60Tensile strength, min, ksi (MPa) 80 (550)

25、90 (620)Yield point, min, ksi (MPa) 50 (345) 60 (415)Elongation in 8 in. or 200 mm, min, % 5 5Elongation in 2 in. or 50 mm, min, % 7 7Brinell hardness, minA159 190Rockwell B hardness, minA83 91AHardness tests are an acceptable alternative for tension tests where the barsize precludes a tension test

26、specimen in accordance with Test Methods andDefinitions A 370.A 499 89 (2008)2TABLE 2 Permissible Variations in Thickness and Length of Leg for AnglesSpecified Length of Leg, in.(mm)APermissible Variations in Thickness, for Thickness Given, Over andUnder, in. (mm)Permissible Variations in Length of

27、Leg, forThickness Given, Over and Under, in. (mm)To316 (4.8), inclOver316 to38 (4.8 to9.5), inclOver38 (9.5)To316 (4.8),inclOver316 to14(4.8 to 6.4), inclOver14 (6.4)To 1 (25), incl 0.008 (0.203) 0.010 (0.255) . . .132 (0.8)364 (1.2)BOver 1 to 2 (25 to 51), incl 0.010 (0.255) 0.010 (0.255) 0.012 (0.

28、305)364 (1.2)116 (1.6)BOver 2 to 3 (51 to 76), incl 0.012 (0.305) 0.015 (0.380) 0.015 (0.380)116 (1.6)116 (1.6)BAThe longer leg of an unequal angle determines the size for tolerance. The out-of-square tolerance in either direction is 112 deg (0.03 rad).BDue to differences in mill facilities and roll

29、ing techniques, these are subject to agreement between manufacturer and purchaser.TABLE 3 Permissible Variations in Thickness and Width for Square and Round Edge FlatsSpecified Width, in. (mm)Permissible Variations in Thickness for Thickness Given, Overand Under, in. (mm)Permissible Variations in Wi

30、dth, in. (mm)To12 (12.7), incl Over12 to 1 (12.7 to 25), incl Over UnderTo 1 (25), incl 0.008 (0.203) 0.010 (0.255)132 (0.8)132 (0.8)Over 1 to 2 (25 to 51), incl 0.012 (0.305) 0.015 (0.380)132 (0.8)132 (0.8)Over 2 to 4 (51 to 102), incl 0.015 (0.380) 0.020 (0.510)116 (1.6)132 (0.8)Over 4 to 6 (102 t

31、o 152), incl 0.015 (0.380) 0.020 (0.510)332 (2.4)116 (1.6)TABLE 4 Permissible Variations in Cross Section for Rounds, Squares, and Round-Cornered SquaresSpecified Size, in. (mm) Permissible Variation from Specified Size, in. (mm)Out-of-Round or Out-of-Square,in. (mm)AOver UnderOver516 to716 (7.9 to

32、11.1), incl 0.012 (0.305) 0.012 (0.305) 0.018 (0.455)Over716 to 1 (11.1 to 25), incl 0.015 (0.380) 0.015 (0.380) 0.022 (0.600)Over 1 to 114 (25 to 32), incl 0.020 (0.510) 0.020 (0.510) 0.030 (0.760)AOut-of-round is the difference between the maximum and minimum diameters of the bar, measured at the

33、same cross section. Out-of-square is the difference in thetwo dimensions at the same cross section of a square between opposite faces.TABLE 5 Permissible Variations for Octagons and HexagonsSpecified Size Between Opposite Faces, in.(mm)Permissible Variations from Specified Size, in. (mm) Out-of-Hexa

34、gon or Out-of-Octagon,in. (mm)AOver UnderTo12 (12.7), incl 0.010 (0.255) 0.007 (0.178) 0.015 (0.380)Over12 to 1 (12.7 to 25), incl 0.015 (0.380) 0.015 (0.380) 0.020 (0.510)AOut-of-hexagon and out-of-octagon is the greatest difference between any two dimensions at the same cross section between oppos

35、ite faces.TABLE 6 Permissible Variations in Dimensions for ChannelsSpecified Size of Channel, in.(mm)Permissible Variations in Size, Over and Under, in. (mm)Out-of-Square of EitherFlange, in./in. (mm/mm) ofFlange WidthDepth of SectionAWidth of FlangesAThickness of Web for Thickness GivenTo316 (4.8),

36、 incl Over316 (4.8)To 112 (38), incl132 (0.8)132 (0.8) 0.010 (0.255) 0.015 (0.380)364 (1.2)Over 112 to 3 (38 to 76), incl116 (1.6)116 (1.6) 0.015 (0.380) 0.020 (0.510)364 (1.2)AMeasurements for depth of section and width of flanges are over-all. This table does not include special channel sections.A

37、 499 89 (2008)3ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of s

38、uch rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for add

39、itional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to t

40、he ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at th

41、e aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).TABLE 7 Permissible Variations in Dimensions for TeesSpecified Size of Tee,in. (mm)APermissible Variations in Size, in. (mm) Thickness of StemStem Out-of-SquareBWidth

42、 or DepthCThickness of FlangeOver Under Over Under Over UnderTo 114 (32), incl364 (1.2)364 (1.2) 0.010 (0.255) 0.010 (0.255) 0.005 (0.127) 0.020 (0.510)132 (0.8)Over 114 to 2116 (1.6)116 (1.6) 0.012 (0.305) 0.012 (0.305) 0.010 (0.255) 0.020 (0.510)116 (1.6)(32 to 51), inclAThe longer member of the u

43、nequal tee determines the size for tolerances.BStem out-of-square is the variation from its true position of the center line of the stem measured at the point.CMeasurements for both width and depth are overall.TABLE 8 Permissible Variations in LengthSpecified Size of Rounds,Squares, Hexagons, andOct

44、agonsSpecified Size of Flats, in. (mm) Permissible Variations Over Specified Length, in. (mm)A,BThickness WidthTo5ft(1.52 m),inclOver 5 to 10ft (1.52 to3.05 m),inclOver 10 to 20ft (3.05 to6.10 m),inclOver 20 to 30ft (6.10 to9.14 m),incl30 to 40 ft(9.14 to12.19 m)Mill ShearingTo 1 (25), incl To 1 (25

45、), incl To 3 (76), incl38 (9.5)12 (12.7)58 (15.9)34 (19.0) 114 (32)Over 1 to 2 (25 to 51), incl To 1 (25), incl Over 3 to 6 (76 to 152),incl12 (12.7)58 (15.9)34 (19.0) 1 (25) 112 (38)Other Sections Classified as BarSize, Shapes, and Angles12 (12.7)58 (15.9)34 (19.0) 1 (25) 112 (38)ANo permissible variations under.BWhere a plus and minus tolerance from specified length is desired and the order so specifies, half of these tolerances may be taken over and half under.A 499 89 (2008)4