1、Designation:A100(Reapproved 2010)Standard Specification forCarbon Steel Tee Rails1This standard is issued under the fixed designation A1;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses
2、 indicates the year of last reapproval.Asuperscriptepsilon()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 carbon steel tee rails of nomi-nal weights of 60 lb/yd
3、(29.8 kg/m)and over for use in railwaytrack,including export and industrial applications.1.2 Supplementary requirements S1 and S2 shall apply onlywhen specified by the purchaser in the order.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are m
4、athematicalconversions to SI units that are provided for information onlyand are not considered standard.2.Referenced Documents2.1 ASTM Standards:2A29/A29M Specification for Steel Bars,Carbon and Alloy,Hot-Wrought,General Requirements forA700 Practices for Packaging,Marking,and Loading Meth-ods for
5、Steel Products for ShipmentE10 Test Method for Brinell Hardness of Metallic MaterialsE127 Practice for Fabricating and Checking Aluminum Al-loy Ultrasonic Standard Reference BlocksE428 Practice for Fabrication and Control of Metal,Otherthan Aluminum,Reference Blocks Used in UltrasonicTesting2.2 Amer
6、ican Railway Engineering and Maintenance ofWay Association(AREMA)Manual for Railway Engineering:Specifications for Steel Rails,Chapter 4,Part 23,43.Ordering Information3.1 Orders for rails under this specification shall include thefollowing information:3.1.1 ASTM designation and year of issue.3.1.2
7、Type of rail desired.3.1.3 Quantity(tons or pieces as appropriate).3.1.4 Full identification of section with dimensional draw-ing,if required.3.1.5 Arrangement of drilled bolt holes,if any,with dimen-sional drawing,if required.3.1.6 Quantity of right-hand and left-hand(Note 1)drilledrails,drilled bo
8、th-end rails,and undrilled(blank)rails desired.3.1.7 Supplementary requirements that shall apply(see S1and S2).3.1.8 Disposition of various classifications of rails(see 8.3.6and 8.3.7).NOTE1The right-hand or left-hand end of the rail is determined byfacing the side of the rail on which the brand(rai
9、sed characters)appears.4.Materials and Manufacture4.1 Rail TypesRails shall be furnished as-rolled(standardand alloy),head hardened(on-line or off-line processes),orfully heat treated as agreed upon between the purchaser and themanufacturer.4.2 Melting PracticeThe steel shall be made by any of thefo
10、llowing processes:basic-oxygen or electric-furnace.4.2.1 The steel shall be cast by a continuous process,inhot-topped ingots,or by other methods agreed upon betweenthe purchaser and the manufacturer.4.3 DiscardSufficient discard shall be taken from thebloom or ingot to ensure freedom from injurious
11、segregationand pipe.4.4 Hydrogen Elimination:4.4.1 Applicability:4.4.1.1 Rails 60 through 70 lb/yd(29.8 through 34.8 kg/m)are not subject to treatment for hydrogen elimination.4.4.1.2 Rails over 70 through 84 lb/yd(over 34.8 through41.7 kg/m)may be subjected to treatment for hydrogenelimination at t
12、he option of the manufacturer.4.4.1.3 Rails over 84 lb/yd(41.7 kg/m)shall be processedby methods that prevent the formation of shatter cracks asagreed upon between the purchaser and the manufacturer.4.4.2 Rail heats shall be tested for hydrogen content usingeither a sampling/analytical method or a d
13、irect measurement1This 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 Nov.1,2010.Published November 2010.Originallyapproved in 190
14、1.Last previous edition approved in 2005 as A1 00(2005).DOI:10.1520/A0001-00R10.2For 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
15、 ASTM website.3Available fromAmerican Railway Engineering and Maintenance of WayAssn.,8201 Corporate Drive,Suite 1125,Landover,MD 20785.4Adapted from AREMA Specifications for Steel Rails(see 2.2).Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United St
16、ates1Copyright by ASTM Intl(all rights reserved);method of the liquid steel.The testing shall be performed eitherduring the continuous casting process or during ingot teeming.Hydrogen content shall be recorded and available for review orreporting at the request of the purchaser.The producer shalldefine the method used to determine hydrogen content,whichof the following methods are used for hydrogen removal,andpresent evidence of applicable procedures used to control thefinal rail hydrogen:4.4.2.
