Standard Test Methods for Conducting Creep, Creep-Rupture, and Stress-Rupture Tests of Metallic Materials

SCOPE
1.1 These test methods cover the determination of the amount of deformation as a function of time (creep test) and the measurement of the time for fracture to occur when sufficient force is present (rupture test) for materials when under constant tensile forces at constant temperature. It also includes the essential requirements for testing equipment. For information of assistance in determining the desirable number and duration of tests, reference should be made to Section 9.
1.2 These test methods list the information which should be included in reports of tests. The intention is to ensure that all useful and readily available information is transmitted to interested parties. Reports receive special attention for the following reasons: ( 1) results from different, recognized procedures vary significantly; therefore, identification of methods used is important; ( 2) later studies to establish important variables are often hampered by the lack of detailed information in published reports; ( 3) the nature of prolonged tests often makes retest impractical, and at the same time makes it difficult to remain within the recommended variations of some controlled variables. A detailed report permits transmittal of test results without implying a degree of control which was not achieved.
1.3 Tests on notched specimens are not included. These tests are addressed in Practice E 292.
1.4 Tests under conditions of short times are not included. These test methods are addressed in Test Methods E 21.
1.5 The values stated in inch-pound units are to be regarded as the standard.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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Historical
Publication Date
09-May-2000
Technical Committee
Drafting Committee
Current Stage
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ASTM E139-00e1 - Standard Test Methods for Conducting Creep, Creep-Rupture, and Stress-Rupture Tests of Metallic Materials
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e1
Designation:E139–00
Standard Test Methods for
Conducting Creep, Creep-Rupture, and Stress-Rupture
1
Tests of Metallic Materials
This standard is issued under the fixed designation E139; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript 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
e NOTE—Section 9.2.3 was editorially updated in February 2003.
1. Scope 2. Referenced Documents
1.1 These test methods cover the determination of the 2.1 ASTM Standards:
2
amount of deformation as a function of time (creep test) and E4 Practices for Force Verification of Testing Machines
the measurement of the time for fracture to occur when E6 Terminology Relating to Methods of Mechanical Test-
2
sufficient force is present (rupture test) for materials when ing
2
under constant tensile forces at constant temperature. It also E8 TestMethodsforTensionTestingofMetallicMaterials
includes the essential requirements for testing equipment. For E21 Test Methods for Elevated Temperature Tension Tests
2
information of assistance in determining the desirable number of Metallic Materials
and duration of tests, reference should be made to Section 9. E29 Practice for Using Significant Digits in Test Data to
3
1.2 These test methods list the information which should be Determine Conformance with Specifications
included in reports of tests. The intention is to ensure that all E74 Practice for Calibration of Force-Measuring Instru-
useful and readily available information is transmitted to ments for Verifying the Force Indication of Testing Ma-
2
interested parties. Reports receive special attention for the chines
following reasons: (1) results from different, recognized pro- E83 Practice for Verification and Classification of Exten-
2
cedures vary significantly; therefore, identification of methods someters
used is important; ( 2) later studies to establish important E177 Practice for Use of the Terms Precision and Bias in
3
variables are often hampered by the lack of detailed informa- ASTM Test Methods
tion in published reports; ( 3) the nature of prolonged tests E220 Method for Calibration of Thermocouples by Com-
4
often makes retest impractical, and at the same time makes it parison Techniques
difficult to remain within the recommended variations of some E292 Practice for Conducting Time-for-Rupture Notch
2
controlled variables. A detailed report permits transmittal of Tension Tests of Materials
testresultswithoutimplyingadegreeofcontrolwhichwasnot E633 Guide for Use ofThermocouples in Creep and Stress
2
achieved. Rupture Testing to 1800°F (1000°C) in Air
1.3 Testsonnotchedspecimensarenotincluded.Thesetests E1012 Practice for Verification of Specimen Alignment
2
are addressed in Practice E292. Under Tensile Loading
1.4 Tests under conditions of short times are not included. 2.2 Military Standard:
5
These test methods are addressed in Test MethodsE21. MIL-STD-120 Gage Inspection
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1.5 The values stated in inch-pound units are to be regarded 2.3 ASTM Adjuncts:
as the standard. Standardunmachinedspecimensforcalibratingcreeptesting
15
1.6 This standard does not purport to address all of the machines (4 by ⁄16 in. square bar)
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica- 3.1 Definitions—The definitions of terms relating to creep
testing, which appear in Section E of Terminology E6 shall
bility of regulatory limitations prior to use.
2
Annual Book of ASTM Standards, Vol 03.01.
1 3
This practice is under the jurisdiction of the ASTM Committee E28 on Annual Book of ASTM Standards, Vol 14.02.
4
Mechanical Testing and is the direct responsibility of Subcommittee 28.04 on Annual Book of ASTM Standards, Vol 14.03.
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Uniaxial Testing. AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
Current edition approved May 10, 2000. Published August 2000. Originally Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
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published as E139–58. Last previous edition E139–96. Available from ASTM Headquarters. Order Adjunct: ADJE0139.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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e1
E139–00
apply to the terms used in this practice. For the purpose of this test data used will depend on the criterion of load-carrying
practiceonly,someofthemoregeneraltermsareusedwiththe ability which best defines the service usefulness of the mate-
restrict
...

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