B31T_2010.pdf

AN AMERICAN NATIO NAL STANDARD ASME B31T-2010Standard Toughness Requirements for PipingASME Code for Pressure Piping,B31Copyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.INTENTIONALLY LEFT BLANKCopyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.ASME B31T-2010StandardToughnessRequirementsfor PipingASME Code for Pressure Piping,B31AN AMERICAN NATIONAL STANDARDCopyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.Date of Issuance:June 1,2010This Standard will be revised when the Society approves the issuance of a new edition.There willbe no addenda issued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard.Interpretations are published on the ASME Web site under the Committee Pages athttp:/cstools.asme.org as they are issued.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput from industry,academia,regulatory agencies,and the public-at-large.ASME does not“approve,”“rate,”or“endorse”any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assumes any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2010 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright 2010 by the American Society of Mechanical Engineers.No reproduction may be made of this material without written consent of ASME.cCopyrighted material licensed to Stanford University by Thomson Scientific(),downloaded on Oct-05-2010 by Stanford University User.No further reproduction or distribution is permitted.Uncontrolled when printed.CONTENTSForeword.ivCommittee Roster.vCorrespondence With the B31 Committee.vi1Introduction.12Glossary.13Low-Temperature Ranges and Requirements.24Impact Testing Methods and Acceptance Criteria.6Tables3.1-1Low-Temperature Service Requirements by Material Group.93.2-1Material Groupings by Material Specification.204.4.2-1Charpy Impact Test(Absorbed Energy)Temperature Reduction for Materialor Specimens 0.3SR 0.310.90.80.70.60.50.4 0.3SR 0.3Carbon SteelsCS 55.Max.possible Charpy294848.291044848484848484848104t 2.5 mmNote(2)CS 55.Max.possible Charpy29.48.291044848484848484848104t 2.5 mmNote(3)CS 50.Max.possible Charpy294848.291044848484848484848104t 2.5 mmNote(2)CS 50.Max.possible Charpy29.46.291044648484848484848104t 2.5 mmNote(3)CS 20.Max.possible Charpy294848.291044848484848484848104t 2.5 mmNote(2)CS 20.Max.possible Charpy29.29.291042934404648484848104t 2.5 mmNote(3)CS 20(A).292929.2929N/A.CS 0.181818.29291823293440484848104CS+20(A).777.77N/A.CS A 10.0Max.possible Charpy74848.71044848484848484848104t 93.7.49.49.491044943383227164481049Copyright 2010 by the