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ASTM A266/A266M-03

(Specification)

Standard Specification for Carbon Steel Forgings for Pressure Vessel Components

Standard Specification for Carbon Steel Forgings for Pressure Vessel Components

SCOPE
1.1 This specification covers four grades of carbon steel forgings for boilers, pressure vessels, and associated equipment.Note 1Designations have been changed as follows: Current Formerly Grade 1Class 1Grade 2Class 2Grade 3Class 3Grade 4Class 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 inch-pound units or SI (metric) units are to be regarded separately as the standard. Within the text and tables, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
1.4 Unless the order specifies the applicable "M" specification designation, the material shall be furnished to the inch-pound units.

General Information

Status
Historical
Publication Date
09-Apr-2003
ICS
77.140.30 - Steels for pressure purposes
77.140.85 - Iron and steel forgings
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.06 - Steel Forgings and Billets
Current Stage
Ref Project

Relations

Replaces
ASTM A266/A266M-99 - Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
Effective Date
10-Apr-2003
Replaced By
ASTM A266/A266M-03a - Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
Effective Date
10-Sep-2003
Referred By
ASTM A788/A788M-23 - Standard Specification for Steel Forgings, General Requirements
Effective Date
10-Apr-2003
Referred By
ASTM A105/A105M-23 - Standard Specification for Carbon Steel Forgings for Piping Applications
Effective Date
10-Apr-2003
Referred By
ASTM A181/A181M-23 - Standard Specification for Carbon Steel Forgings, for General-Purpose Piping
Effective Date
10-Apr-2003

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ASTM A266/A266M-03 - Standard Specification for Carbon Steel Forgings for Pressure Vessel ComponentsASTM A266/A266M-03 - Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
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ASTM A266/A266M-03 - Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
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Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: A 266/A 266M – 03
Standard Specification for
1
Carbon Steel Forgings for Pressure Vessel Components
This standard is issued under the fixed designation A 266/A 266M; 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 (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. Scope* E 112 Test Methods for Determining the Average Grain
6
2
Size
1.1 This specification covers four grades of carbon steel
7
E 165 Test Method for Liquid Penetrant Examination
forgings for boilers, pressure vessels, and associated equip-
E 381 Method of Macroetch Testing Steel Bars, Billets,
ment.
6
Blooms, and Forgings
NOTE 1—Designations have been changed as follows:
Current Formerly
2.2 Other Standard:
Grade 1 Class 1
ASME Boiler and Pressure Vessel Code, Section IX, Weld-
Grade 2 Class 2
8
Grade 3 Class 3 ing Qualifications
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 A 788, the purchaser shall include with the
1.3 The values stated in either inch-pound units or SI inquiry and order a detailed drawing, sketch, or written
(metric) units are to be regarded separately as the standard.
description of the forging.
Within the text and tables, the SI units are shown in brackets. 3.2 Material supplied to this specification shall conform to
The values stated in each system are not exact equivalents;
the requirements of Specification A 788, which outlines addi-
therefore, each system must be used independently of the other. tional ordering information, manufacturing requirements, test-
Combining values from the two systems may result in noncon-
ing and retesting methods and procedures, marking, certifica-
formance with the specification. tion, product analysis variations, and additional supplementary
1.4 Unless the order specifies the applicable “M” specifica-
requirements.
tion designation, the material shall be furnished to the inch- 3.3 If the requirements of this specification are in conflict
pound units.
with the requirements of Specification A 788, the requirements
of this specification shall prevail.
2. Referenced Documents
3.4 For hubbed flanges and tube sheets ordered for ASME
3
2.1 ASTM Standards:
Boiler and Pressure Vessel Code application, Supplementary
A 275/A 275M Test Method for Magnetic Particle Exami-
Requirement S12 of Specification A 788 should be specified in
4
nation of Steel Forgings
addition to Supplementary Requirement S8 of this specifica-
A 370 Test Methods and Definitions for Mechanical Testing tion.
5
of Steel Products
4. Materials and Manufacture
A 788 Specification for Steel Forgings, General Require-
4
ments 4.1 The steel shall be made in accordance with the Melting
Process Section of Specification A 788. A sufficient discard
shall be made to secure freedom from injurious pipe and undue
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
segregation.
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
A01.06 on Steel Forgings and Billets.
4.2 The material shall be forged as close as practical to the
Current edition approved April 10, 2003. Published June 2003. Originally
specified shape and size.
approved in 1943. Last previous edition approved in 1999 as A 266/A 266M–99.
2 4.3 The finished product shall be a hot-worked forging as
For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
cation SA–266/ SA–266M in Section II of that code. defined by Specification A 788.
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
6
Standards volume information, refer to the standard’s Document Summary page on Annual Book of ASTM Standards, Vol 03.01.
7
the ASTM website. Annual Book of ASTM Standards, Vol 03.03.
4 8
Annual Book of ASTM Standards, Vol 01.05. Available from the American Society of Mechanical Engineers, 345 East 47th
5
Annual Book of ASTM Standards, Vol 01.03. St., New York, NY 10017.
*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 ----------------------
NOTICE: This standard has either been superceded and replaced by a new version or disconti
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