ASTM-A909/A909M 2021

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A909/A909M-06(2021) Standard Specification for Steel Forgings, Microalloy, for General Industrial Use

Published By	Publication Date	Number of Pages
ASTM	2021	4

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Categories: 77.140.85 - Iron and steel forgings, ASTM

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Description

ASTM A909/A909M-06-Reapproved2021

Active Standard: Standard Specification for Steel Forgings, Microalloy, for General Industrial Use

ASTM A909/A909M

Scope

1.1 This specification covers wrought, microalloyed carbon steel forgings for industrial use. Microalloyed steels develop their properties by the addition of small amounts of microalloying elements such as vanadium, columbium, titanium, or molybdenum. The properties may be influenced also by control of the hot working process and temperature and by control of the subsequent cooling rate.

1.2 The forgings shall be furnished to chemical composition and mechanical property requirements as specified herein. Chemical composition is based on standard carbon steel grades modified to include microalloying elements. Strength level is specified based on desired mechanical properties in the forgings. Depending on the forging process, different strength classes may be attainable from a single chemical composition. Conversely, mechanical properties of a given strength class may be achieved using different chemical compositions. The manufacturer should be consulted if development of chemical composition is necessary.

1.3 For the purpose of this specification, forgings with maximum section thickness of 4 in. [100 mm] are to be considered.

1.4 Supplementary Requirements S1 to S8 are provided for use when additional controls or requirements are desired. These shall apply only when specified on the purchase order.

1.5 The values stated in either inch-pound units or SI (metric) units are to be regarded separately as standard. Within the text and tables, SI units are shown in brackets. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.

1.6 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound units.

1.7 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.

Keywords

forging procedure; microalloyed; steel forgings;

ICS Code

ICS Number Code 77.140.85 (Iron and steel forgings)

DOI: 10.1520/A0909_A0909M-06R21

Additional information

Standard Title	A909/A909M-06(2021) Standard Specification for Steel Forgings, Microalloy, for General Industrial Use
Published Code	ASTM
Publication Date	2021
Pages Count	4
ICS Codes	77.140.85 - Iron and steel forgings