ASTM E1253-21

Standard Guide for Reconstitution of Charpy-Sized Specimens

SIGNIFICANCE AND USE
3.1 Practice E185 defines the minimum requirements for light-water reactor surveillance program Charpy V-notch specimens and Practice E2215 describes the evaluation of test specimens from surveillance capsules. It may be desirable to extend the original surveillance program with additional specimens for plant aging management issues, such as plant license renewal, to better define existing data, or to determine fracture toughness of a material when no standard fracture toughness test specimens are available. The possibility to reconstitute the broken halves of existing specimens can provide specimens which can be tested.  
3.2 Charpy-sized specimens are typically machined from material not previously mechanically tested. There are occasions that exist when either (1) no full size specimen blanks are available or (2) the material available with the desired history (such as having been subjected to irradiation) is not sufficient for the machining of full-size specimens, or both.  
3.3 A solution to this problem, which is addressed in this guide, is to fabricate new specimens using the broken halves of previously tested Charpy-sized specimens or other pieces of ferritic steel too small to fabricate a full Charpy-sized specimen. In this guide, the central segment of each new specimen utilizes a broken half of a previously tested specimen and end tabs that are welded to the central segment, or the central section may simply be a piece of untested material shorter than a Charpy-sized specimen. While specifically addressing reconstitution of irradiated pressure vessel steels, this guide can also provide guidance for reconstitution of Charpy-sized specimens for other situations where material availability is limited.
SCOPE
1.1 This guide covers procedures for the reconstitution of ferritic steel, Type A Charpy V-notch specimens (Test Methods E23) and Charpy-sized fracture toughness specimens suitable for testing in three point bending in accordance with Test Methods E1921 or E1820. Ferritic steels (principally broken specimens used in nuclear power plant irradiation programs) are reconstituted by welding end tabs of similar material onto remachined specimen sections that were unaffected by the initial test. Guidelines are given for the selection of suitable specimen halves and end tab materials, for dimensional control, and for avoidance of overheating the notch area. A comprehensive overview of the reconstitution methodologies can be found in Ref  (1).2  
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Aug-2021
• ICS: 19.060 - Mechanical testing
• Technical Committee: E10 - Nuclear Technology and Applications
• Drafting Committee: E10.02 - Behavior and Use of Nuclear Structural Materials

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E1253 − 21
Standard Guide for
1
Reconstitution of Charpy-Sized Specimens
This standard is issued under the fixed designation E1253; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E23 Test Methods for Notched Bar Impact Testing of Me-
tallic Materials
1.1 This guide covers procedures for the reconstitution of
E185 Practice for Design of Surveillance Programs for
ferritic steel, TypeACharpy V-notch specimens (Test Methods
Light-Water Moderated Nuclear Power Reactor Vessels
E23) and Charpy-sized fracture toughness specimens suitable
E220 Test Method for Calibration of Thermocouples By
for testing in three point bending in accordance with Test
Comparison Techniques
Methods E1921 or E1820. Ferritic steels (principally broken
E1820 Test Method for Measurement of Fracture Toughness
specimens used in nuclear power plant irradiation programs)
E1921 Test Method for Determination of Reference
are reconstituted by welding end tabs of similar material onto
Temperature, T , for Ferritic Steels in the Transition
o
remachined specimen sections that were unaffected by the
Range
initial test. Guidelines are given for the selection of suitable
E2215 Practice for Evaluation of Surveillance Capsules
specimen halves and end tab materials, for dimensional
from Light-Water Moderated Nuclear Power Reactor Ves-
control, and for avoidance of overheating the notch area. A
sels
comprehensive overview of the reconstitution methodologies
2
can be found in Ref (1).
3. Significance and Use
1.2 The values stated in SI units are to be regarded as
3.1 Practice E185 defines the minimum requirements for
standard. The values given in parentheses after SI units are
light-waterreactorsurveillanceprogramCharpyV-notchspeci-
provided for information only and are not considered standard.
mens and Practice E2215 describes the evaluation of test
specimens from surveillance capsules. It may be desirable to
1.3 This standard does not purport to address all of the
extend the original surveillance program with additional speci-
safety concerns, if any, associated with its use. It is the
mens for plant aging management issues, such as plant license
responsibility of the user of this standard to establish appro-
renewal, to better define existing data, or to determine fracture
priate safety, health, and environmental practices and deter-
toughness of a material when no standard fracture toughness
mine the applicability of regulatory limitations prior to use.
test specimens are available. The possibility to reconstitute the
1.4 This international standard was developed in accor-
broken halves of existing specimens can provide specimens
dance with internationally recognized principles on standard-
which can be tested.
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
3.2 Charpy-sized specimens are typically machined from
mendations issued by the World Trade Organization Technical
material not previously mechanically tested. There are occa-
Barriers to Trade (TBT) Committee.
sionsthatexistwheneither(1)nofullsizespecimenblanksare
available or (2) the material available with the desired history
2. Referenced Documents
(such as having been subjected to irradiation) is not sufficient
3
for the machining of full-size specimens, or both.
2.1 ASTM Standards:
3.3 A solution to this problem, which is addressed in this
guide, is to fabricate new specimens using the broken halves of
previously tested Charpy-sized specimens or other pieces of
1
This guide is under the jurisdiction of ASTM Committee E10 on Nuclear
ferritic steel too small to fabricate a full Charpy-sized speci-
Technology and Applicationsand is the direct responsibility of Subcommittee
E10.02 on Behavior and Use of Nuclear Structural Materials.
men. In this guide, the central segment of each new specimen
Current edition approved Sept. 1, 2021. Published October 2021. Originally
utilizes a broken half of a previously tested specimen and end
approved in 1993. Last previous edition approved in 2013 as E1253-13. DOI:
tabs that are welded to the central segment, or the central
10.1520/E1253-21.
2
section may simply be a piece of untested material shorter than
The boldface numbers in parentheses refer to the list of references at the end of
this standard.
a Charpy-sized specimen. While specifically addressing recon-
3
For referenced ASTM standards, visit the ASTM webs
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E1253 − 13 E1253 − 21
Standard Guide for
1
Reconstitution of Irradiated Charpy-Sized Specimens
This standard is issued under the fixed designation E1253; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This guide covers procedures for the reconstitution of ferritic pressure vessel steels used in nuclear power plant applications,
steel, Type A Charpy V-notch specimens (Test Methods E23) specimens and Charpy-sized fracture toughness specimens suitable
for testing in three point bending in accordance with Test Methods E1921 or E1820. Materials from irradiation programs
(principally broken specimens) Ferritic steels (principally broken specimens used in nuclear power plant irradiation programs) are
reconstituted by welding end tabs of similar material onto remachined specimen sections that were unaffected by the initial test.
Guidelines are given for the selection of suitable specimen halves and end tab materials, for dimensional control, and for avoidance
2
of overheating the notch area. A comprehensive overview of the reconstitution methodologies can be found in Ref (1).
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. after
SI units are provided for information only and are not considered standard.
1.3 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
3
2.1 ASTM Standards:
E23 Test Methods for Notched Bar Impact Testing of Metallic Materials
E185 Practice for Design of Surveillance Programs for Light-Water Moderated Nuclear Power Reactor Vessels
E220 Test Method for Calibration of Thermocouples By Comparison Techniques
E1820 Test Method for Measurement of Fracture Toughness
E1921 Test Method for Determination of Reference Temperature, T , for Ferritic Steels in the Transition Range
o
E2215 Practice for Evaluation of Surveillance Capsules from Light-Water Moderated Nuclear Power Reactor Vessels
3. Significance and Use
3.1 Practice E185 defines the minimum requirements for light-water reactor surveillance program Charpy V-notch specimens and
1
This guide is under the jurisdiction of ASTM Committee E10 on Nuclear Technology and Applicationsand is the direct responsibility of Subcommittee E10.02 on
Behavior and Use of Nuclear Structural Materials.
Current edition approved Jan. 1, 2013Sept. 1, 2021. Published January 2013October 2021. Originally approved in 1993. Last previous edition approved in 20072013 as
E1253-07.-13. DOI: 10.1520/E1253-13.10.1520/E1253-21.
2
The boldface numbers in parentheses refer to the list of references at the end of this standard.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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E1253 − 21
Practice E2215 describes the evaluation of test specimens from surveillance capsules. It may be desirable to extend the original
surveillance program beyond availablewith additional specimens for plant aging management issues, such as plant license renewal,
to better define existing data, or to determine fracture toughness of a material when no standard fracture toughness test specimens
are available. The abilitypossibility to reconstitute the broken halves of existing specimens can provide such data.specimens which
can be tested.
3.2 Charpy-sized specimens are typically machined from virgin material, that is, material not previously mechanically tested.
T
...