ASTM A266/A266M-13
(Specification)Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
ABSTRACT
This specification covers four grades of carbon steel forgings for boiler and pressure vessel components, and associated equipment. Materials shall be manufactured by melting process and hot-worked forging. Heat and product analyses shall be performed wherein forgings shall conform to chemical requirements for carbon, manganese, phosphorus, sulphur, and silicon. Mechanical properties such as tensile strength, yield strength, elongation, and reduction of area shall be inspected as well. The requirements for annealed, normalized, or normalized and tempered steel forgings, and that for quenched and tempered steel forgings have been specified separately.
SCOPE
1.1 This specification2 covers four grades of carbon steel forgings for boilers, pressure vessels, and associated equipment.Note 1—Designations have been changed as follows:
Current
Formerly
Grade 1
Class 1
Grade 2
Class 2
Grade 3
Class 3
Grade 4
Class 4
1.2 Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only when specified individually by the purchaser in the order.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.4 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound units.
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Designation:A266/A266M −13
Standard Specification for
1
Carbon Steel Forgings for Pressure Vessel Components
This standard is issued under the fixed designationA266/A266M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* A1058 Test Methods for Mechanical Testing of Steel
2 Products—Metric
1.1 This specification covers four grades of carbon steel
E112 Test Methods for Determining Average Grain Size
forgings for boilers, pressure vessels, and associated equip-
E165/E165M Practice for Liquid Penetrant Examination for
ment.
General Industry
NOTE 1—Designations have been changed as follows:
E381 Method of Macroetch Testing Steel Bars, Billets,
Current Formerly
Blooms, and Forgings
Grade 1 Class 1
2.2 Other Standard:
Grade 2 Class 2
4
Grade 3 Class 3 ASME Boiler and Pressure Vessel Code, Section IX
Grade 4 Class 4
3. Ordering Information and General Requirements
1.2 Supplementary requirements are provided for use when
additional testing or inspection is desired. These shall apply
3.1 In addition to the ordering information required by
only when specified individually by the purchaser in the order.
Specification A788/A788M, the purchaser shall include with
the inquiry and order a detailed drawing, sketch, or written
1.3 The values stated in either SI units or inch-pound units
description of the forging.
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
3.2 Material supplied to this specification shall conform to
system shall be used independently of the other. Combining
the requirements of Specification A788/A788M, which out-
values from the two systems may result in non-conformance
lines additional ordering information, manufacturing
with the standard.
requirements, testing and retesting methods and procedures,
marking, certification, product analysis variations, and addi-
1.4 Unless the order specifies the applicable “M” specifica-
tional supplementary requirements.
tion designation, the material shall be furnished to the inch-
pound units.
3.3 If the requirements of this specification are in conflict
with the requirements of Specification A788/A788M, the
2. Referenced Documents
requirements of this specification shall prevail.
3
2.1 ASTM Standards:
3.4 ForhubbedflatheadsandtubesheetsorderedforASME
A275/A275M Practice for Magnetic Particle Examination of
Boiler and Pressure Vessel Code application, Supplementary
Steel Forgings
Requirement S12 of Specification A788/A788M shall be
A370 Test Methods and Definitions for Mechanical Testing
specified in addition to Supplementary Requirement S8 of this
of Steel Products
specification.
A788/A788M Specification for Steel Forgings, General Re-
quirements
4. Materials and Manufacture
4.1 The steel shall be made in accordance with the Melting
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Process Section of Specification A788/A788M. A sufficient
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
discard shall be made to secure freedom from injurious pipe
A01.06 on Steel Forgings and Billets.
and undue segregation.
Current edition approved Nov. 1, 2013. Published January 2014. Originally
approved in 1943. Last previous edition approved in 2011 as A266/A266M – 11.
4.2 The material shall be forged as close as practical to the
DOI: 10.1520/A0266_A0266M-13.
specified shape and size.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
cation SA–266/ SA–266M in Section II of that code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4
contactASTM Customer Service at service@astm.org. ForAnnual Book ofASTM Available from American Society of Mechanical Engineers (ASME), ASME
Standards volume information, refer to the standard’s Document Summary page on International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
the ASTM website. www.asme.org.
*A Summary of Changes 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
1
---------------------- Page: 1 ----------------------
A266/A266M−13
4.3 The finished product shall be a hot-worked forging as propertiesprescribedinTable2whentestedinaccordancewith
defined by Specification A788/A788M. the latest issue of Test Methods and Definitions A370 or Test
MethodsA1058whentheMsuffixstandardhasbeenspecified.
5. Machining
Thelargestobtainabletensiontestspecimenass
...
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: A266/A266M − 11 A266/A266M − 13
Standard Specification for
1
Carbon Steel Forgings for Pressure Vessel Components
This standard is issued under the fixed designation A266/A266M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
2
1.1 This specification covers four grades of carbon steel forgings for boilers, pressure vessels, and associated equipment.
NOTE 1—Designations have been changed as follows:
Current Formerly
Grade 1 Class 1
Grade 2 Class 2
Grade 3 Class 3
Grade 4 Class 4
Current Formerly
Grade 1 Class 1
Grade 2 Class 2
Grade 3 Class 3
Grade 4 Class 4
1.2 Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only
when specified individually by the purchaser in the order.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.4 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound
units.
2. Referenced Documents
3
2.1 ASTM Standards:
A275/A275M Practice for Magnetic Particle Examination of Steel Forgings
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A788/A788M Specification for Steel Forgings, General Requirements
A1058 Test Methods for Mechanical Testing of Steel Products—Metric
E112 Test Methods for Determining Average Grain Size
E165E165/E165M Practice for Liquid Penetrant Examination for General Industry
E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
2.2 Other Standard:
4
ASME Boiler and Pressure Vessel Code, Section IX, Welding QualificationsIX
3. Ordering Information and General Requirements
3.1 In addition to the ordering information required by Specification A788/A788M, the purchaser shall include with the inquiry
and order a detailed drawing, sketch, or written description of the forging.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.06
on Steel Forgings and Billets.
Current edition approved Oct. 1, 2011Nov. 1, 2013. Published October 2011January 2014. Originally approved in 1943. Last previous edition approved in 20082011 as
A266/A266M – 03a (2008).A266/A266M – 11. DOI: 10.1520/A0266_A0266M-11. 10.1520/A0266_A0266M-13.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA–266/ SA–266M in Section II of that code.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
4
Available from the American Society of Mechanical Engineers, 345 East 47th St., Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY
10017.10016-5990, http://www.asme.org.
*A Summary of Changes 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
1
---------------------- Page: 1 ----------------------
A266/A266M − 13
3.2 Material supplied to this specification shall conform to the requirements of Specification A788/A788M, which outlines
additional ordering information, manufacturing requirements, testing and retesting methods and procedures, marking, certification,
product analysis variations, and additional supplementary requirements.
3.3 If the requirements of this specification are in conflict with the requirements of Specification A788/A788M, the
requirements of this specification shall prevail.
3.4 For hubbed flanges flat heads and tube sheets ordered for ASME Boiler and Pressure Vessel Code application,
Supplementary Requirement S12 of Specification A788/A788M shall be specified in addition to Supplementary Requirement S8
of this specification.
4. Materials and Manufacture
4.1 The steel shall be made in accordance with the Melting Process
...
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