ASTM A499-1989(2002) Standard Specification for Steel Bars and Shapes Carbon Rolled from T Rails《丁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 2002)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 the standard.2. Referenced Documents2.1 ASTM Standards:A1 Specification for Carbon Steel Tee Rails2A 29/A 29M Specification for Steel Bars, Carbon andAlloy, Hot-Wrought and Cold-Finished, General Require-ments for3A 370 Test Methods and Definitions for Mechan

5、ical Testingof Steel Products23. 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 nominal 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

6、 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 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

7、 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 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

8、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 thesmall dimension.(2) Diamonds,78 and1316 in. (22.2 and 20.6 mm) in thelongest dimension by58 to34 in. (15.9 to 19.0 mm),in

9、clusive, 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 mm) 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,i

10、n 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 Quantity (weight or number of pieces),4.1.2 Name of material (rail steel carbon bars),4.1.3 Grade of steel (Grade 50

11、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 Certification, if required (Section 11), and4.1.8 End use.NOTE 1A typical ordering description is as follows: 10 000 lb

12、, railsteel carbon bars, 1.000 in. diameter by 10 ft, round, ASTM A 499 dated_.1This specification is under the jurisdiction of ASTM A01 on Steel, StainlessSteel and Related Alloys , and is the direct responsibility of A01.15 on Bars.Current edition approved Sept. 10, 2002. Published February 1990.

13、Originallypublished as A 49989. Discontinued June 1995 and reinstated as A 49989(1997)e1.2Annual Book of ASTM Standards, Vol 01.04.3Annual Book of ASTM Standards, Vol 01.05.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. General R

14、equirements5.1 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.6. Materials and Manufacture6.1 MaterialThe material shall be hot wrought fromstandard section “T” rails. No ot

15、her materials, such as thoseknown 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 Cond

16、ition:6.3.1 The material shall 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 ro

17、lling; consequently,the composition 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 agr

18、eement with the manufacturer,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 Tabl

19、e 1.8.2 Test SpecimensTest 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 op

20、eration (normally an 8-h period).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 an

21、d suchtolerances are subject 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 nu

22、mberof feet of length divided 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

23、certification that the material 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 streng

24、th, min, ksi (MPa) 80 (550) 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 barsi

25、ze precludes a tension test specimen in accordance with Test Methods andDefinitions A 370.A 499 89 (2002)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)Permissi

26、ble Variations in Length of 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.

27、255) 0.010 (0.255) 0.012 (0.305)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

28、 in mill facilities and rolling 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)

29、Permissible Variations in Width, 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

30、)132 (0.8)Over 4 to 6 (102 to 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

31、 UnderOver516 to716 (7.9 to 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

32、of the bar, measured at the 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 Specifie

33、d Size, in. (mm) Out-of-Hexagon 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

34、 cross section between opposite 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

35、 Thickness GivenTo316 (4.8), 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 includ

36、e special channel sections.A 499 89 (2002)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

37、the riskof infringement of such 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

38、 of this standard or for additional 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 shou

39、ldmake your views known to the 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 obtai

40、ned by contacting ASTM at the 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

41、StemStem Out-of-SquareBWidth 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), inc

42、lAThe longer member of the unequal 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 Roun

43、ds,Squares, Hexagons, andOctagonsSpecified 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 Shea

44、ringTo 1 (25), incl To 1 (25), 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 (2002)4