ASTM A788/A788M-10

Standard Specification for Steel Forgings, General Requirements

ABSTRACT
This specification covers a group of common requirements that, unless covered by the individual product specification in another ASTM document, applies to steel forgings for general use. Materials shall be produced primarily by either electric-furnace, basic oxygen, vacuum-induction (VIM), or open-hearth melting process. The primary melting may incorporate separate degassing or refining and may be followed by secondary melting, using electro slag (ESR) or vacuum arc remelting (VAR). Steel shall be forged by any of these three classes based on forging temperature: cold-worked forging, hot-cold-worked forging, or hot-worked forging. After forging, specimens shall be allowed to cool prior to reheating for heat treatment. Details of heat and product analyses for the evaluation of chemical composition are thoroughly discussed. Tension and hardness tests shall be conducted to evaluate mechanical properties such as percentage of elongation and reduction of area. Repair welding shall not be allowed unless permitted by the product specification.
SCOPE
1.1 This specification covers a group of common requirements that, unless otherwise specified in the individual product specification, shall apply to steel forgings under any of the following specifications issued by ASTM:

General Information

• Status: Historical
• Publication Date: 14-Nov-2010
• 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

Relations

• Replaces: ASTM A788/A788M-08a - Standard Specification for Steel Forgings, General Requirements
• Effective Date: 15-Nov-2010
• Replaced By: ASTM A788/A788M-11 - Standard Specification for Steel Forgings, General Requirements
• Effective Date: 01-Oct-2011
• Referred By: ASTM A541/A541M-05(2020) - Standard Specification for Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components
• Effective Date: 15-Nov-2010
• Referred By: ASTM A503/A503M-15(2020) - Standard Specification for Ultrasonic Examination of Forged Crankshafts
• Effective Date: 15-Nov-2010
• Referred By: ASTM A181/A181M-23 - Standard Specification for Carbon Steel Forgings, for General-Purpose Piping
• Effective Date: 15-Nov-2010
• Referred By: ASTM A275/A275M-18(2023) - Standard Practice for Magnetic Particle Examination of Steel Forgings
• Effective Date: 15-Nov-2010
• Referred By: ASTM A966/A966M-15(2020) - Standard Practice for Magnetic Particle Examination of Steel Forgings Using Alternating Current
• Effective Date: 15-Nov-2010
• Referred By: ASTM A986/A986M-01(2021) - Standard Specification for Magnetic Particle Examination of Continuous Grain Flow Crankshaft Forgings
• Effective Date: 15-Nov-2010
• Referred By: ASTM A1090/A1090M-19 - Standard Specification for Forged Rings and Hollows for Use as Base Plates in Power Transmission Structures
• Effective Date: 15-Nov-2010
• Referred By: ASTM A105/A105M-23 - Standard Specification for Carbon Steel Forgings for Piping Applications
• Effective Date: 15-Nov-2010
• Referred By: ASTM A266/A266M-21 - Standard Specification for Carbon Steel Forgings for Pressure Vessel Components
• Effective Date: 15-Nov-2010
• Referred By: ASTM A471/A471M-19 - Standard Specification for Vacuum-Treated Alloy Steel Forgings for Turbine Rotor Disks and Wheels
• Effective Date: 15-Nov-2010
• Referred By: ASTM A965/A965M-21a - Standard Specification for Steel Forgings, Austenitic, for Pressure and High Temperature Parts
• Effective Date: 15-Nov-2010
• Referred By: ASTM A182/A182M-23 - Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
• Effective Date: 15-Nov-2010
• Referred By: ASTM A504/A504M-18(2023) - Standard Specification for Wrought Carbon Steel Wheels
• Effective Date: 15-Nov-2010

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
An American National Standard
Designation: A788/A788M – 10
Standard Specification for
1
Steel Forgings, General Requirements
This standard is issued under the fixed designationA788/A788M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
A649/A649M Forged Steel Rolls Used for Corrugating Pa-
per Machinery
2
1.1 This specification covers a group of common require-
A668/A668M Steel Forgings, Carbon and Alloy, for General
ments that, unless otherwise specified in the individual product
Industrial Use
A711/A711M Steel Forging Stock
specification, shall apply to steel forgings under any of the
A723/A723M Alloy Steel Forgings for High-Strength Pres-
following specifications issued by ASTM:
sure Component Application
ASTM A729/A729M Alloy Steel Axles, Heat Treated, for Mass
Transit and Electric Railway Service
Designation Title
A266/A266M Carbon Steel Forgings for Pressure Vessel A765/A765M Carbon Steel and Low-Alloy Steel Pressure-
Vessel-Component Forgings with Manda-
Components
A288 Carbon and Alloy Steel Forgings for Magnetic tory Toughness Requirements
A768/A768M Vacuum-Treated 12 % Chromium Alloy Steel
Retaining Rings for Turbine Generators
Forgings for Turbine Rotors and Shafts
A289/A289M Alloy Steel Forgings for Nonmagnetic Retain-
A837/A837M Steel Forgings, Alloy, for Carburizing Applica-
ing Rings for Generators
tions
A290/A290M Carbon and Alloy Steel Forgings for Rings for
A859/A859M Age-Hardening Alloy Steel Forgings for Pres-
Reduction Gears
sure Vessel Components
A291/A291M Steel Forgings, Carbon and Alloy, for Pinions,
A891/A891M Precipitation Hardening Iron Base Superalloy
Gears, and Shafts for Reduction Gears
Forgings for Turbine Rotor Disks and
A336/A336M Alloy Steel Forgings for Pressure and High-
Wheels
Temperature Parts
A909/A909M Steel Forgings, Microalloy, for General Indus-
A372/A372M Carbon and Alloy Steel Forgings for Thin-
trial Use
Walled Pressure Vessels
A940/A940M Vacuum Treated Steel Forgings, Alloy, Differ-
A427/A427M Wrought Alloy Steel Rolls for Cold and Hot
entially Heat Treated, for Turbine Rotors
Reduction
A965/A965M Steel Forgings, Austenitic, for Pressure and
A469/A469M Vacuum-Treated Steel Forgings for Generator
High Temperature Parts
Rotors
A982/A982M Steel Forgings, Stainless, for Compressor
A470/A470M Vacuum-Treated Carbon and Alloy Steel
Forgings for Turbine Rotors and Shafts and Turbine Airfoils
A983/A983M Specification for Continous Grain Flow
A471/A471M Vacuum-Treated Alloy Steel Forgings for Tur-
bine Rotor Disks and Wheels Forged Carbon and Alloy Steel Crankshafts
for Medium Speed Diesel Engines
A504/A504M Wrought Carbon Steel Wheels
A508/A508M Quenched and Tempered Vacuum-Treated A986/A986M Magnetic Particle Examination of Continuous
Grain Flow Crankshaft Forgings
Carbon and Alloy Steel Forgings for Pres-
sure Vessels A1021/A1021M Martensitic Stainless Steel Forgings and
Forging Stock for High-Temperature Ser-
A521/A521M Steel, Closed-Impression Die Forgings for
General Industrial Use vice
A1048/A1048M Pressure Vessel Forgings, Alloy Steel, Higher
A541/A541M Quenched and Tempered Carbon and Alloy
Strength Chromium-Molybdenum-Tungsten
Steel Forgings for Pressure Vessel Compo-
for Elevated Temperature Service
nents
A1049/A1049M Stainless Steel Forgings, Ferritic/Austenitic
A579/A579M Superstrength Alloy Steel Forgings
(Duplex), for Pressure Vessels and Related
A592/A592M High-Strength Quenched and Tempered Low-
Components
Alloy Steel Forged Fittings and Parts for
Pressure Vessels
1.2 In case of conflict in requirements, the requirements of
A646/A646M Premium Quality Alloy Steel Blooms and Bil-
lets for Aircraft and Aerospace Forgings
the individual product specifications shall prevail over those of
this specification.
1.3 The purchaser may specify additional requirements (see
4.2.3) that do not negate any of the provisions of either this
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
specification or of the individual product specifications. The
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
acceptance of any such additional requirements shall be
A01.06 on Steel Forgings and Billets.
Current edition approved Nov. 15, 2010. Published December 2010. Originally
dependent on negotiations with the supplier and must be
approved in 1984. Last previous edition approved in 2008 as A788/A788M – 08a.
included in the order.
DOI: 10.1520/A0788_A0788M-10.
2
1.4 If, by agreement, forgings are to be supplied in a
For ASME Boiler
...

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.
An American National Standard
Designation:A788/A788M–08a Designation: A788/A788M – 10
Standard Specification for
1
Steel Forgings, General Requirements
This standard is issued under the fixed designationA788/A788M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1This specification
2
1.1 This specification covers a group of common requirements that, unless otherwise specified in the individual product
specification, shall apply to steel forgings under any of the following specifications issued by ASTM:
ASTM
Designation Title
A266/A266M Carbon Steel Forgings for Pressure Vessel
Components
A288 Carbon and Alloy Steel Forgings for Magnetic
Retaining Rings for Turbine Generators
A289/A289M Alloy Steel Forgings for Nonmagnetic Retain-
ing Rings for Generators
A290/A290M Carbon and Alloy Steel Forgings for Rings for
Reduction Gears
A291/A291M Steel Forgings, Carbon and Alloy, for Pinions,
Gears, and Shafts for Reduction Gears
A336/A336M Alloy Steel Forgings for Pressure and High-
Temperature Parts
A372/A372M Carbon and Alloy Steel Forgings for Thin-
Walled Pressure Vessels
A427 Wrought Alloy Steel Rolls for Cold and Hot
Reduction
A427/A427M Wrought Alloy Steel Rolls for Cold and Hot
Reduction
A469/A469M Vacuum-Treated Steel Forgings for Generator
Rotors
A470/A470M Vacuum-Treated Carbon and Alloy Steel
Forgings for Turbine Rotors and Shafts
A471 Vacuum-Treated Alloy Steel Forgings for Tur-
bine Rotor Disks and Wheels
A471/A471M Vacuum-Treated Alloy Steel Forgings for Tur-
bine Rotor Disks and Wheels
A504/A504M Wrought Carbon Steel Wheels
A508/A508M Quenched and Tempered Vacuum-Treated
Carbon and Alloy Steel Forgings for Pres-
sure Vessels
A521 Steel, Closed-Impression Die Forgings for
General Industrial Use
A521/A521M Steel, Closed-Impression Die Forgings for
General Industrial Use
A541/A541M Quenched and Tempered Carbon and Alloy
Steel Forgings for Pressure Vessel Compo-
nents
A579/A579M Superstrength Alloy Steel Forgings
A592/A592M High-Strength Quenched and Tempered Low-
Alloy Steel Forged Fittings and Parts for
Pressure Vessels
A646/A646M Premium Quality Alloy Steel Blooms and Bil-
lets for Aircraft and Aerospace Forgings
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.06
on Steel Forgings and Billets.
Current edition approved Nov. 1, 2008.15, 2010. Published November 2008.December 2010. Originally approved in 1984. Last previous edition approved in 2008 as
A788/A788M – 08a. DOI: 10.1520/A0788_A0788M-108A.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA–788 in Section II of that code.
*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 ----------------------
A788/A788M – 10
A649/A649M Forged Steel Rolls Used for Corrugating Pa-
per Machinery
A668/A668M Steel Forgings, Carbon and Alloy, for General
Industrial Use
A711/A711M Steel Forging Stock
A723/A723M Alloy Steel Forgings for High-Strength Pres-
sure Component Application
A729/A729M Alloy Steel Axles, Heat Treated, for Mass
Transit and Electric Railway Service
A765/A765M Carbon Steel and Low-Alloy Steel Pressure-
Vessel-Component Forgings with Manda-
tory Toughness Requirements
A768/A768M Vacuum-Treated 12 % Chromium Alloy Steel
Forgings for Turbine Rotors and Shafts
A837/A837M Steel Forgings, Alloy, for Carburizing Applica-
tions
A859/A859M Age-Hardening Alloy Steel Forgings for Pres-
sure Vessel Components
A891 Precipitation Hardening Iron Base Superalloy
Forgings for Turbine Rotor Disks and
Wheels
A891/A891M Precipitation Hardening Iron Base Superalloy
Forgings for Turbine Rotor Disks and
Wheels
A909 Steel Forgings, Microalloy, for General Indus-
trial Use
A909/A909M Steel Forgings, Microalloy, for General Indus-
trial Use
A940 Vacuum Treated Steel Forgings, Alloy, Differ-
entially Heat Treated, for Turbine Rotors
A940/A940M Vacuum Treated Steel Forgings, Alloy, Differ-
entially Heat Treated, for Turbine Rotors
A965/A965M Steel Forgings, Austenitic, for Pressure and
High T
...

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.
An American National Standard
Designation:A788/A788M–08a Designation: A788/A788M – 10
Standard Specification for
1
Steel Forgings, General Requirements
This standard is issued under the fixed designationA788/A788M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1This specification
2
1.1 This specification covers a group of common requirements that, unless otherwise specified in the individual product
specification, shall apply to steel forgings under any of the following specifications issued by ASTM:
ASTM
Designation Title
A266/A266M Carbon Steel Forgings for Pressure Vessel
Components
A288 Carbon and Alloy Steel Forgings for Magnetic
Retaining Rings for Turbine Generators
A289/A289M Alloy Steel Forgings for Nonmagnetic Retain-
ing Rings for Generators
A290/A290M Carbon and Alloy Steel Forgings for Rings for
Reduction Gears
A291/A291M Steel Forgings, Carbon and Alloy, for Pinions,
Gears, and Shafts for Reduction Gears
A336/A336M Alloy Steel Forgings for Pressure and High-
Temperature Parts
A372/A372M Carbon and Alloy Steel Forgings for Thin-
Walled Pressure Vessels
A427 Wrought Alloy Steel Rolls for Cold and Hot
Reduction
A427/A427M Wrought Alloy Steel Rolls for Cold and Hot
Reduction
A469/A469M Vacuum-Treated Steel Forgings for Generator
Rotors
A470/A470M Vacuum-Treated Carbon and Alloy Steel
Forgings for Turbine Rotors and Shafts
A471 Vacuum-Treated Alloy Steel Forgings for Tur-
bine Rotor Disks and Wheels
A471/A471M Vacuum-Treated Alloy Steel Forgings for Tur-
bine Rotor Disks and Wheels
A504/A504M Wrought Carbon Steel Wheels
A508/A508M Quenched and Tempered Vacuum-Treated
Carbon and Alloy Steel Forgings for Pres-
sure Vessels
A521 Steel, Closed-Impression Die Forgings for
General Industrial Use
A521/A521M Steel, Closed-Impression Die Forgings for
General Industrial Use
A541/A541M Quenched and Tempered Carbon and Alloy
Steel Forgings for Pressure Vessel Compo-
nents
A579/A579M Superstrength Alloy Steel Forgings
A592/A592M High-Strength Quenched and Tempered Low-
Alloy Steel Forged Fittings and Parts for
Pressure Vessels
A646/A646M Premium Quality Alloy Steel Blooms and Bil-
lets for Aircraft and Aerospace Forgings
A649/A649M Forged Steel Rolls Used for Corrugating Pa-
per Machinery
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.06
on Steel Forgings and Billets.
Current edition approved Nov. 1, 2008.15, 2010. Published November 2008.December 2010. Originally approved in 1984. Last previous edition approved in 2008 as
A788/A788M – 08a. DOI: 10.1520/A0788_A0788M-108A.
2
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA–788 in Section II of that code.
*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 ----------------------
A788/A788M – 10
A668/A668M Steel Forgings, Carbon and Alloy, for General
Industrial Use
A711/A711M Steel Forging Stock
A723/A723M Alloy Steel Forgings for High-Strength Pres-
sure Component Application
A729/A729M Alloy Steel Axles, Heat Treated, for Mass
Transit and Electric Railway Service
A765/A765M Carbon Steel and Low-Alloy Steel Pressure-
Vessel-Component Forgings with Manda-
tory Toughness Requirements
A768/A768M Vacuum-Treated 12 % Chromium Alloy Steel
Forgings for Turbine Rotors and Shafts
A837/A837M Steel Forgings, Alloy, for Carburizing Applica-
tions
A859/A859M Age-Hardening Alloy Steel Forgings for Pres-
sure Vessel Components
A891 Precipitation Hardening Iron Base Superalloy
Forgings for Turbine Rotor Disks and
Wheels
A891/A891M Precipitation Hardening Iron Base Superalloy
Forgings for Turbine Rotor Disks and
Wheels
A909 Steel Forgings, Microalloy, for General Indus-
trial Use
A909/A909M Steel Forgings, Microalloy, for General Indus-
trial Use
A940 Vacuum Treated Steel Forgings, Alloy, Differ-
entially Heat Treated, for Turbine Rotors
A940/A940M Vacuum Treated Steel Forgings, Alloy, Differ-
entially Heat Treated, for Turbine Rotors
A965/A965M Steel Forgings, Austenitic, for Pressure and
High T
...