ASTM A66-2007 Standard Specification for Steel Screw Spikes《钢螺丝钉的标准规范》.pdf

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1、Designation: A 66 07Standard Specification forSteel Screw Spikes1This standard is issued under the fixed designationA66; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year of last revision. A number in parentheses indicates t

2、he year of last reapproval. A superscriptepsilon (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 steel screw spikes used asfastenings between railroad rails

3、, tie plates, and ties.1.2 The values stated 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.1.3 This standard does not purport to address all of thesafety

4、 concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A 370 Test Methods and Definitions

5、 for Mechanical Testingof Steel ProductsA 700 Practices for Packaging, Marking, and LoadingMethods for Steel Products for Shipment3. Ordering Information3.1 Orders for screw spikes under this specification shallinclude the following information as appropriate:3.1.1 Quantity (weight),3.1.2 Style of H

6、eadA,B,orC3or other, includingdrawings if necessary,3.1.3 Type of Pointpilot point or not pointed,3.1.4 Dimensionsdiameter and length, under head,3.1.5 Supplementary Requirement if to apply (see S1)3.1.6 Certification and Test Report (see 11.1).4. Manufacture4.1 The steel shall be made by any of the

7、 followingprocesses: electric-furnace or basic-oxygen.4.2 The steel may be cast by a continuous process, or iningots.4.3 The heads and threads of the spikes may be formed byhot- or cold-forming methods.5. Mechanical Requirements5.1 Tensile Requirements:5.1.1 The material as represented by a tension

8、test of afull-size finished spike, or a specimen machined from afinished spike, shall conform to the requirements prescribed inTable 1.5.1.2 Tension tests of full-size spikes shall be performedusing a 10 wedge as described in Test Methods A 370,Supplement S11.1.5.5.1.3 Where the design of the spike

9、is such that full-sizetesting is impracticable, the tension test may be made on aspecimen machined from a finished spike. Dimensions of thetest specimen shall conform to the requirements of TestMethods A 370.5.1.4 When a machined specimen test is performed, theelongation requirement prescribed in Ta

10、ble 1 shall apply. If ascrew spike is machined and the specimen is tested andreported. the elongation meets or exceeds 18 %, the bend testis not required. See 5.2.5.1.5 The yield point shall be determined by the drop of thebeam or halt in the gage of the testing machine.5.2 Bend RequirementThe body

11、of a full-size finishedspike shall withstand the bend test described in Table 2 withoutcracking on the outside of the bent portion.6. Dimensions and Permissible Variations6.1 The finished spikes shall conform to the dimensionsspecified by the purchaser, subject to the permissible variationsprescribe

12、d in Table 3.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.01 on Steel Rails and Accessories.Current edition approved May 1, 2007. Published May 2007. Originallyapproved in 1916. Las

13、t previous edition approved in 2001 as A 66 01.2For 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 website.3Consult manuf

14、acturers literature for design details for A, B, and C-style heads.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.2 The threads shall be sharp and true to gage and

15、of thedesign specified by the purchaser.7. Workmanship, Finish, and Appearance7.1 The head of the finished spikes shall be concentric withand firmly joined to the body.7.2 The material shall be free of injurious imperfections andshall have a workmanlike finish.8. Number of Tests and Retests8.1 One t

16、ension test and one bend test shall be made fromeach lot of 100 kegs or fraction thereof.8.2 If the percentage of elongation of a machined tensiontest specimen is less than that specified in Table 1 and any partof the fracture is more than34 in. (19 mm) from the center ofthe gage length, as indicate

17、d by scribe scratches marked on thespecimen before testing, a retest shall be allowed.8.3 If, during the tension or bend tests, a previously undis-covered material or manufacturing flaw should be disclosedthat interferes with the test or the interpretation of results, thesubstitution of another samp

18、le spike shall be permitted after itis demonstrated to the satisfaction of the purchaser or hisrepresentative, that the condition is not typical of the remainderof the lot.8.4 If any test specimen fails because of mechanical reasonssuch as failure of testing equipment or improper specimenpreparation

19、, it may be discarded and another specimen taken.9. Inspection9.1 The manufacturer shall afford the purchasers inspectorall reasonable facilities necessary to satisfy that the material isbeing produced and furnished in accordance with the specifi-cation. Mill inspection by the purchaser shall not in

20、terfereunnecessarily with the manufacturers operations. All tests andinspections shall be made at the place of manufacture, unlessotherwise agreed upon.10. Rejection and Rehearing10.1 Material that fails to conform to the requirements ofthis specification may be rejected. Rejections shall be reporte

21、dto the manufacturer or supplier promptly and in writing. In caseof dissatisfaction with the test results, the manufacturer orsupplier may make claim for a rehearing.11. Certification and Test Report11.1 When specified in the purchaser order or contract, amanufacturers certification shall be furnish

22、ed to the purchaserthat the material was produced and tested in accordance withthis specification and has been found to meet the requirements.11.2 When specified in the purchase order or contract, areport of the chemical and mechanical test results shall befurnished.11.3 A Material Test Report, Cert

23、ificate of Inspection, orsimilar document printed from or used in electronic form froman electronic data interchange (EDI) transmission shall beregarded as having the same validity as a counterpart printed inthe certifiers facility. The content of the EDI transmitteddocument must meet the requiremen

24、ts of the invoked ASTMstandard(s) and conform to any existing EDI agreement be-tween the purchaser and the supplier.11.4 Notwithstanding the absence of a signature, the orga-nization submitting either a printed document (Material TestReport, Certificate of Inspection or similar document) or anEDI tr

25、ansmission is responsible for the content of the report.12. Product Marking12.1 The manufacturers symbol shall appear on the head ofthe spike.12.2 Bar Coding:12.2.1 The Automotive Industry Action Group (AIAG) BarCode Standard for Primary Metals for Steel Products may beconsidered as a possible auxil

26、iary method of identification onthe containers. Use of this method shall be by agreementbetween purchaser and supplier.13. U. S. Government Procurement13.1 When specified in the contract or purchase order,material shall be prepared for shipment and storage in accor-dance with the requirements of Pra

27、ctices A 700.14. Keywords14.1 rails; railway applications; steel screw spikes; trackspikesTABLE 1 Tension Test RequirementsSpecimenFull size MachinedTensile strength, min, psi (MPa) 60 000(415)60 000(415)Yield point, min 30 000(205)30 000(250)Elongation in 2 in. or 50 mm, min, % 18TABLE 2 Bend Test

28、RequirementBody bend, cold 90around pin 3 times spike diameterTABLE 3 Permissible Variations in DimensionsOver Underin. mm in. mmDiameter, unthreaded portion 1/32 0.8 . .Diameter, threaded portion 1/32 0.8 . .Reach of head 1/8 3.2 1/16 1.6Width across flats 0 0.0 1/32 0.8Length 1/8 3.2 1/83.2A66072S

29、UPPLEMENTARY REQUIREMENTSThe following supplementary requirement shall apply only when specified by the purchaser in theinquiry, contract, and order.S1. Copper may be specified to a minimum of 0.20 %. Themaximum copper content shall be determined upon mutualagreement between the purchaser and the ma

30、nufacturer.SUMMARY OF CHANGESCommittee A01 has identified the loactions of several changes made to this standard since the last edition(A 66 01). Approved May 2007.(1) Deleted references to S1 in the Scope(2) Clarified 5.1.4(3) Revised Table 1.(4) Changed wording of S1.ASTM International takes no po

31、sition 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 such rights, are entirely their own responsibi

32、lity.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 additional standardsand should be addressed to A

33、STM 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 the ASTM Committee on Standards, at the addres

34、s 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 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).A66073