1、Designation: A759 10Standard Specification forCarbon Steel Crane Rails1This standard is issued under the fixed designation A759; 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 parentheses ind
2、icates the year of last reapproval. Asuperscript epsilon () 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 carbon steel crane rails ofspecial designs only, and
3、 nominal weights of 104 lb/yd (51.6kg/m) through 175 lb/yd (86.8 kg/m) for crane runway use.1.2 When standard tee rail sections are desired, they shall beordered in accordance with Specification A1.1.3 Supplementary Requirements S1 through S3 of anoptional nature are provided. They shall apply only
4、whenspecified by the purchaser in the order.1.4 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.2. Referenced Documents2.1 ASTM Standards
5、:2A1 Specification for Carbon Steel Tee RailsA700 Practices for Packaging, Marking, and Loading Meth-ods for Steel Products for Shipment3. Ordering Information3.1 Orders for crane rails under this specification shallinclude the following information as appropriate:3.1.1 Quantity (tons or pieces),3.1
6、.2 ASTM designation and year of issue,3.1.3 Complete identification of section with dimensionaldrawing if required (see Section 2),3.1.4 Length of rails or length of runway as required, (see6.3),3.1.5 Arrangement of drilled bolt holes with dimensionaldrawing if required,3.1.6 Supplementary requireme
7、nts that shall apply (see S1through S3), and3.1.7 Certification and Test Report Requirements (see Sec-tion 10).4. Manufacture4.1 Melting PracticeThe steel shall be made by any of thefollowing processes: basic-oxygen or electric-furnace.4.1.1 The steel may be cast by a continuous process, or iningots
8、.4.2 DiscardA sufficient discard shall be made to securefreedom from injurious segregation and piping.4.3 Control Cooling:4.3.1 Rails shall be control cooled in accordance with thefollowing procedure, except when produced from vacuum-degassed steel or control cooled blooms, in which case the railsma
9、y be air cooled and 4.3.2-4.3.6 are not applicable.4.3.2 All rails shall be cooled on hot beds or runways untilfull transformation is accomplished, and then charge immedi-ately into the containers. In no case should the rail be chargedbelow 725F (386C).4.3.3 The temperature of the rails before charg
10、ing shall bedetermined with reliable equipment at the head of the rail atleast 12 in. (305 mm) from the end.4.3.4 The cover shall be placed on the container immedi-ately after completion of the charge and shall remain in placefor at least 10 h. After the removal or raising of the lid of thecontainer
11、, no rails shall be removed until the temperature of thetop layer of rails has fallen to 300F (149C) or lower.4.3.5 The temperature between an outside rail and theadjacent rail in the bottom tier of the container at a point notless than 12 in. (305 mm), nor more than 36 in. (914 mm), fromthe rail en
12、d shall be recorded. This temperature shall be thecontrol for judging rate of cooling.4.3.6 The container shall be so protected and insulated thatthe control temperature shall not drop below 300F (149C) in7 h from the time that the bottom tier is placed in the container.1This specification is under
13、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 Nov. 1, 2010. Published December 2010. Originallyapproved in 1978. Last previous edition approved in 2005
14、as A759 00 (2005).DOI: 10.1520/A0759-10.2For 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.1*A Summary of Change
15、s 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.If this cooling requirement is not met, the rails shall beconsidered control cooled provided the temperature at alocation not less than 12 i
16、n. (305 mm) from the end of a rail atapproximately the center of the middle tier does not drop below300F (149C) in less than 15 h.4.4 High Strength RailsWhen specified in accordancewith Supplementary Requirement S1, all or a portion of thequantity of rails ordered shall be high strength.4.5 Chamferi
17、ngWhen specified in accordance withSupplementary Requirement S2, the ends of rails shall bechamfered.4.6 Ends Prepared for Electric Arc WeldingWhen railsare to be joined by electric arc welding, special end preparationmay be available from individual manufacturers as may bedeveloped in accordance wi
18、th Supplementary Requirement S3.5. Chemical Requirements5.1 Heat or Cast AnalysisAn analysis for each heat orcast of steel shall be made by the manufacturer to determine thepercentage of the elements specified in Table 1. The analysisshall be made from a test sample taken preferably during thepourin
19、g of the heat or cast and shall conform to the require-ments in Table 1.5.2 When ladle tests are not available, finished materialrepresenting the heat may be product tested. The productanalysis allowance beyond the limits of the specified ladleanalysis shall be within the limits for product analyses
20、 speci-fied in Table 2.5.3 Alternate chemistries may be allowed when agreed to bypurchaser and supplier.6. Permissible Variations of Dimension, Weight, andOther Physical Attributes6.1 Section:6.1.1 The section of the rail shall conform to the designspecified by the purchaser.6.1.2 A variation of132
21、in. (0.8 mm) less or132 in. greaterthan the specified height will be permitted.6.1.3 A variation of116 in. (1.6 mm) in the width of eitherflange will be permitted for sections other than 175 lb/yd (86.8kg/m), but the variation in total width of base shall not exceed116 in. (1.6 mm). For 175-lb/yd (8
22、6.8-kg/m) sections a varia-tion of332 in. (2.4 mm) in the width of either flange will bepermitted but the variation in total width of base shall notexceed332 in.6.2 WeightA variation of 1 % from the calculated weightof section as applied to the entire order will be permitted.6.3 Length:6.3.1 The sta
23、ndard length of rail shall be 80 ft (24.4 m) or 39ft (11.9 m) when measured at a temperature of 60F (15.5C).6.3.2 Up to 9% for 39 ft rail or 15% for 80 ft rail of theentire order will be accepted in lengths shorter than standardvarying by 1 ft (0.3 M) as follows: 79, 78, 77, 75, 70, 65, 60,39, 38, 3
24、7, 36, 33, 30, 27, and 25 ft.6.3.3 Special cut lengths to complete an overall runwaylength may be specified.6.3.4 A variation of716 in. (11.1 mm) for 39 ft rails or78 in.(22 mm) for 80 ft rails from the specified length of individualrails will be permitted.6.4 End Finish:6.4.1 Rails shall be milled,
25、 abrasive wheel cut, or ground tolength, with a variation in end squareness of not more than132in. (0.8 mm) allowed.6.4.2 Harmful burrs on the ends shall be removed.6.5 Drilling:6.5.1 Circular holes for joint bolts, when specified, shall bedrilled to conform to the specified drawings and dimensions.
26、6.5.2 Avariation of116 in. (1.6 mm) over and nothing underin the size of the bolt holes shall be permitted.6.5.3 A variation of132 in. (0.8 mm) in the location of theholes will be permitted.7. Workmanship, Finish, and Appearance7.1 All rails shall have a workmanlike finish and be free ofvarious impe
27、rfections that may detrimentally affect their suit-ability for the service for which they are intended.7.2 Rails shall be straightened cold in a press or rollermachine to be commercially straight, as determined by visualinspection.7.3 Deviations in the vertical and horizontal alignmentthroughout the
28、 length of the rail shall be uniform. Sharpdeviations in either direction shall not be acceptable.7.4 Deviations of the lateral (horizontal) line in eitherdirection at the rail ends shall not exceed a maximum ordinateof 0.040 in. (1 mm) in 3 ft (0.9 m).7.5 All ordinate determinations shall be made o
29、n the con-cave side, between the rail surface and the straightedge.7.6 Rails presented for inspection that do not conform to therequirements of 7.1-7.4 may be reconditioned by the manufac-turer.8. Inspection8.1 The manufacturer shall afford the purchasers inspectorall reasonable facilities necessary
30、 to satisfy that the material isbeing produced and furnished in accordance with this specifi-cation. Mill inspection by the purchaser shall not interfereunnecessarily with the manufacturers operations. All tests andinspections shall be made at the place of manufacture, unlessotherwise agreed upon.TA
31、BLE 1 Chemical Requirements, %Carbon 0.67 to 0.84Manganese 0.70 to 1.10Phosphorus, max 0.04Sulfur, max 0.05Silicon 0.10 to 0.50TABLE 2 Product Analysis Allowance Beyond Limits ofSpecified Chemical AnalysisUnder Minimum Limit, % Over Maximum Limit, %Carbon 0.04 0.04Manganese 0.06 0.06Phosphorus . . .
32、 0.008Sulfur . . . 0.008Silicon 0.02 0.02AAContinuously cast allowances shall be 0.05 % over maximum limit for silicon.A759 1029. Rejection and Rehearing9.1 Material that fails to conform to the requirements of thisspecification may be rejected. Rejections shall be reported tothe manufacturer or sup
33、plier promptly and in writing. In caseof dissatisfaction with the test results, the manufacturer orsupplier may make claim for a rehearing.10. Certification10.1 When specified in the purchase order or contract, amanufacturers certification shall be furnished to the purchaserthat the material was pro
34、duced and tested in accordance withthis specification and has been found to meet the requirements.10.2 When specified in the purchase order or contract, areport of the chemical and mechanical test results shall befurnished.10.3 A material Test Report, Certificate of Inspection orsimilar document pri
35、nted from or used in electronic from anelectronic data interchange (EDI) transmission shall be re-garded as having the same validity as a counterpart printed inthe certifiers facility. The content of the EDI transmitteddocument must meet the requirements of the invoked ASTMstandard(s) and conform to
36、 any existing EDI agreement be-tween the purchaser and the supplier.10.4 Notwithstanding the absence of a signature, the orga-nization submitting either a printed document (Material TestReport, Certificate of Inspection or similar document) or anEDI transmission is responsible for the content of the
37、 report.11. Product Marking11.1 The name or brand of the manufacturer, the year andmonth of manufacture, and the weight and section designationof the rail shall be legibly rolled in raised letters and figures onthe web.11.2 The heat number, the rail letter, and the ingot numberor a designation for t
38、he strand and bloom for continuously castrail shall be hot stamped into the web of each rail where it willnot be covered by the joint bars.11.3 The requirements of 11.1 and 11.2 shall not apply whensections shorter than 25 ft (7.6 m) are specified, since brandingor stamping, or both, may be incomple
39、te or missing entirely.11.4 Bar Coding:11.4.1 The automotive Industry Action Group (AIAG) BarCode Standard for Primary Metals for Steel Products may beconsidered as an auxiliary method of identification. Use of thismethod shall be by agreement between purchaser and supplier.12. U.S. Government Procu
40、rement12.1 When specified in the contract or purchase order,material shall be prepared for shipment and storage in accor-dance with the requirements of Practices A700.13. Keywords13.1 rails; railway application; steel crane rails; steel railsSUPPLEMENTARY REQUIREMENTSThe following supplementary requ
41、irements shall apply only when specified by the purchaser in theinquiry, order, or contract.S1. High Strength RailsS1.1 Heat-treated, head hardened, or alloy rails may bespecified in accordance with the manufacturers standardpractice. High strength rails shall conform to a Brinell hardnessnumber ran
42、ge from 321 to 388 when the decarburized surfacehas been removed.S2. ChamferingS2.1 Chamfered ends may be specified. Chamfering willconsist of grinding a bevel approximately116 in. (1.6 mm) backand18 in. (3.2 mm) from the top and sides of the end face ofthe rail head, when specified.S3. Ends Prepare
43、d for Electric Arc WeldingS3.1 The purchaser shall consult with the manufacturer as tospecial end preparation if crane rails are to be supplied forwelding.A759 103SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue(A759 00 (2005) that
44、 may impact the use of this standard. (Approved Nov. 1, 2010.)(1) Updated Section 2.(2) Deleted 4.4 and renumbered subsequent sections.(3) Added 5.3.(4) Removed all information regarding the End HardeningSupplementary Requirement.ASTM International takes no position respecting the validity of any pa
45、tent 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 responsibility.This standard is subject to revisio
46、n 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 ASTM International Headquarters. Your com
47、ments 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 address shown below.This standard is copyright
48、ed 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). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).A759 104
