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ASTM A266/A266M-03

Historical Revision

Standard Specification for Carbon Steel Forgings for Pressure Vessel Components

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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 1
Grade 2Class 2
Grade 3Class 3
Grade 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.


SDO ASTM: ASTM International
Document Number A266
Publication Date April 10, 2003
Language en - English
Page Count 4
Revision Level 03
Supercedes
Committee A01.06
Publish Date Document Id Type View
May 1, 2024 A0266_A0266M-24 Revision
May 1, 2021 A0266_A0266M-21 Revision
Nov. 1, 2020 A0266_A0266M-20 Revision
March 1, 2018 A0266_A0266M-18 Revision
Nov. 1, 2013 A0266_A0266M-13 Revision
Oct. 1, 2011 A0266_A0266M-11 Revision
Sept. 10, 2003 A0266_A0266M-03A Revision
April 10, 2003 A0266_A0266M-03 Revision
Sept. 10, 1999 A0266_A0266M-99 Revision
March 1, 2008 A0266_A0266M-03AR08 Reaffirmation