ASTM A266/A266M-03a
Standard Specification for Carbon Steel Forgings for Pressure Vessel Components

Standard No.

ASTM A266/A266M-03a

Release Date

2003

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM A266/A266M-03a(2008)

Latest

ASTM A266/A266M-21

Scope

1.1 This specification covers four grades of carbon steel forgings for boilers, pressure vessels, and associated equipment.

Note 18212;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 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.

ASTM A266/A266M-03a Referenced Document

• ASTM A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products
• ASTM A788 Standard Specification for Steel Forgings, General Requirements
• ASTM E112 Standard Test Methods for Determining Average Grain Size
• ASTM E165 Standard Test Method for Liquid Penetrant Examination
• ASTM E381 Standard Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings

ASTM A266/A266M-03a history

• 2021 ASTM A266/A266M-21 Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
• 2020 ASTM A266/A266M-20 Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
• 2018 ASTM A266/A266M-18 Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
• 2013 ASTM A266/A266M-13 Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
• 2011 ASTM A266/A266M-11 Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
• 2003 ASTM A266/A266M-03a(2008) Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
• 2003 ASTM A266/A266M-03a Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
• 2003 ASTM A266/A266M-03 Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
• 1999 ASTM A266/A266M-99 Standard Specification for Carbon Steel Forgings for Pressure Vessel Components