ASTM A909/A909M-06(2016)

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

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 exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.  
1.6 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: 31-Aug-2016
• ICS: 77.140.85 - Iron and steel forgings
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.06 - Steel Forgings and Billets

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:A909/A909M −06 (Reapproved 2016)
Standard Specification for
1
Steel Forgings, Microalloy, for General Industrial Use
This standard is issued under the fixed designationA909/A909M; 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.
1. Scope* 2. Referenced Documents
2
1.1 This specification covers wrought, microalloyed carbon 2.1 ASTM Standards:
steel forgings for industrial use. Microalloyed steels develop A29/A29M SpecificationforGeneralRequirementsforSteel
their properties by the addition of small amounts of microal- Bars, Carbon and Alloy, Hot-Wrought
loying elements such as vanadium, columbium, titanium, or A275/A275M Practice for Magnetic Particle Examination of
molybdenum.Thepropertiesmaybeinfluencedalsobycontrol Steel Forgings
of the hot working process and temperature and by control of A370 Test Methods and Definitions for Mechanical Testing
the subsequent cooling rate. of Steel Products
A576 Specification for Steel Bars, Carbon, Hot-Wrought,
1.2 The forgings shall be furnished to chemical composition
Special Quality
and mechanical property requirements as specified herein.
A751 Test Methods, Practices, and Terminology for Chemi-
Chemical composition is based on standard carbon steel grades
cal Analysis of Steel Products
modified to include microalloying elements. Strength level is
A788/A788M Specification for Steel Forgings, General Re-
specified based on desired mechanical properties in the forg-
quirements
ings. Depending on the forging process, different strength
A921/A921M Specification for Steel Bars, Microalloy, Hot-
classes may be attainable from a single chemical composition.
Wrought, Special Quality, for Subsequent Hot Forging
Conversely, mechanical properties of a given strength class
E10 Test Method for Brinell Hardness of Metallic Materials
may be achieved using different chemical compositions. The
E18 Test Methods for Rockwell Hardness of Metallic Ma-
manufacturer should be consulted if development of chemical
terials
composition is necessary.
E45 Test Methods for Determining the Inclusion Content of
1.3 For the purpose of this specification, forgings with
Steel
maximum section thickness of 4 in. [100 mm] are to be
considered. 3. Terminology
1.4 Supplementary Requirements S1 to S8 are provided for 3.1 Definitions of Terms Specific to This Standard:
use when additional controls or requirements are desired. 3.1.1 microalloy forgings—forgings from microalloyed
These shall apply only when specified on the purchase order. steels produced by effectively controlling the thermomechani-
cal components of the forging process to achieve required
1.5 The values stated in either inch-pound units or SI
mechanical properties with no post-forging heat treatment.
(metric) units are to be regarded separately as standard. Within
3.1.2 microalloy forging procedure—the written thermo-
the text and tables, SI units are shown in brackets. The values
mechanical processing parameters to be followed during the
stated in each system are not exact equivalents; therefore, each
production of a microalloy forging. It would include, but is not
system shall be used independently of the other. Combining
limited to: starting stock size; chemical composition, including
values from the two systems may result in nonconformance
any optional microalloying additions; reheat practice; forging
with this specification.
temperature range; method of heating; cooling methods; and
1.6 Unless the order specifies the applicable “M” specifica-
lot size definition.
tion designation, the material shall be furnished to the inch-
pound units.
4. Ordering Information
4.1 Orders for material supplied to this specification should
include the information specified in 4.1 of Specification A788/
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
2
A01.06 on Steel Forgings and Billets. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Sept. 1, 2016. Published September 2016. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1992. Last previous edition approved in 2011 as A909/A909M – 06 Standards volume information, refer to the standard’s Document Summary page on
(2011). DOI: 10.1520/A0909_A0909M-06R16. the ASTM website.
*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
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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: A909/A909M − 06 (Reapproved 2011) A909/A909M − 06 (Reapproved 2016)
Standard Specification for
1
Steel Forgings, Microalloy, for General Industrial Use
This standard is issued under the fixed designation A909/A909M; 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.
1. 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 exact equivalents; therefore, each system shall
be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.
1.6 Unless the order specifies the applicable “M” specification designation, the material shall be furnished to the inch-pound
units.
2. Referenced Documents
2
2.1 ASTM Standards:
A29/A29M Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
A275/A275M Practice for Magnetic Particle Examination of Steel Forgings
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A576 Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
A788/A788M Specification for Steel Forgings, General Requirements
A921/A921M Specification for Steel Bars, Microalloy, Hot-Wrought, Special Quality, for Subsequent Hot Forging
E10 Test Method for Brinell Hardness of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E45 Test Methods for Determining the Inclusion Content of Steel
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
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 April 1, 2011Sept. 1, 2016. Published June 2011September 2016. Originally approved in 1992. Last previous edition approved in 20062011 as
A909/A909M – 06.A909/A909M – 06 (2011). DOI: 10.1520/A0909_A0909M-06R11.10.1520/A0909_A0909M-06R16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*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

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A909/A909M − 06 (2016)
3.1.1 microalloy forgings—forgings from microalloyed steels produced by effectively controlling the thermomechanical
components of the forging process to achieve required mechanical properties with no post-forging heat treatment.
3.1.2 microalloy forging procedure—the written thermo-mechanical processing parameters to be followed during the
prod
...