ASTM A961/A961M-08a
(Specification)Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications
Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications
ABSTRACT
This specification covers a group of common requirements that shall apply to steel flanges, forged fittings, valves, and parts for piping applications. If the primary melting is required it shall incorporate separate degassing or refining and may be followed by secondary melting, such as electroslag remelting or vacuum remelting. If secondary melting is employed, the heat shall be defined as all of the ingot remelted from a single primary heat. Material requiring heat treatment shall be treated as specified in the individual product specification using the following procedures such as full annealing, solution annealing, isothermal annealing, normalizing, tempering and post-weld heat treatment, stress relieving. Heat analysis shall be used to determine the percentages of carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, molybdenum, titanium, tantalum, copper, cobalt, nitrogen, aluminum, vanadium, cerium to meet the required chemical composition. The product analysis shall be used to determine if the chemical composition shall conform to the limits of the product specified. Mechanical tests shall be performed to determine the mechanical properties such as hardness, tensile properties, and impact properties.
SCOPE
1.1 This specification covers a group of common requirements that shall apply to steel flanges, forged fittings, valves, and parts for piping applications under any of the following individual product specifications:
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Designation: A961/A961M – 08a
Standard Specification for
Common Requirements for Steel Flanges, Forged Fittings,
1
Valves, and Parts for Piping Applications
This standard is issued under the fixed designationA961/A961M; 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* in each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining
1.1 This specification covers a group of common require-
values from the two systems may result in non-conformance
ments that shall apply to steel flanges, forged fittings, valves,
with the standard. The inch-pound units shall apply, unless the
and parts for piping applications under any of the following
“M”designation(SI)oftheproductspecificationisspecifiedin
individual product specifications:
the order.
Title of Specification ASTM Designation
2. Referenced Documents
Forgings, Carbon Steel, for Piping Components A105/A105M
Forgings, Carbon Steel, for General-Purpose Piping A181/A181M
2
2.1 ASTM Standards:
Forged or Rolled Alloy-Steel Pipe Flanges, Forged A182/A182M
A105/A105M Specification for Carbon Steel Forgings for
Fittings, and Valves and Parts for High Temperature
Service
Piping Applications
Forgings, Carbon and Low Alloy Steel, Requiring Notch A350/A350M
A181/A181M Specification for Carbon Steel Forgings, for
Toughness Testing for Piping Components
General-Purpose Piping
Forged or Rolled 8 and 9 % Nickel Alloy A522/A522M
Steel Flanges, Fittings, Valves, and Parts
A182/A182M Specification for Forged or RolledAlloy and
for Low-Temperature Service
Stainless Steel Pipe Flanges, Forged Fittings, and Valves
Forgings, Carbon and Alloy Steel, for Pipe Flanges, A694/A694M
and Parts for High-Temperature Service
Fittings, Valves, and Parts for High-Pressure
Transmission Service
A275/A275M Practice for Magnetic Particle Examination
Flanges, Forged, Carbon and Alloy Steel for Low A707/A707M
of Steel Forgings
Temperature Service
A350/A350M Specification for Carbon and Low-Alloy
Forgings, Carbon Steel, for Piping Components with A727/A727M
Inherent Notch Toughness
Steel Forgings, Requiring Notch Toughness Testing for
Forgings, Titanium-Stabilized Carbon Steel, for A836/A836M
Piping Components
Glass-Lined Piping and Pressure Vessel Service
A370 Test Methods and Definitions for Mechanical Testing
1.2 In case of conflict between a requirement of the indi-
of Steel Products
vidual product specification and a requirement of this general
A522/A522M Specification for Forged or Rolled 8 and 9%
requirement specification, the requirements of the individual
Nickel Alloy Steel Flanges, Fittings, Valves, and Parts for
product specification shall prevail over those of this specifica-
Low-Temperature Service
tion.
A694/A694M Specification for Carbon and Alloy Steel
1.3 By mutual agreement between the purchaser and the
Forgings for Pipe Flanges, Fittings, Valves, and Parts for
supplier, additional requirements may be specified (see Section
High-Pressure Transmission Service
4.1.2). The acceptance of any such additional requirements
A700 PracticesforPackaging,Marking,andLoadingMeth-
shall be dependent on negotiations with the supplier and must
ods for Steel Products for Shipment
be included in the order as agreed upon between the purchaser
A707/A707M Specification for Forged Carbon and Alloy
and supplier.
Steel Flanges for Low-Temperature Service
1.4 The values stated in either SI units or inch-pound units
A727/A727M Specification for Carbon Steel Forgings for
are to be regarded separately as standard. Within the text and
Piping Components with Inherent Notch Toughness
the tables, the SI units are shown in brackets.The values stated
A751 Test Methods, Practices, andTerminology for Chemi-
cal Analysis of Steel Products
A836/A836M Specification for Titanium-Stabilized Carbon
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
A01.22 on Steel Forgings andWrought Fittings for PipingApplications and Bolting
2
Materials for Piping and Special Purpose Applications. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Oct. 1, 2008. Published November 2008. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1996. Last previous edition approved in 2008 as A961/A961M–08. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0961_A0961M-08A. the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyri
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:A961/A961M–08 Designation: A 961/A 961M – 08a
Standard Specification for
Common Requirements for Steel Flanges, Forged Fittings,
1
Valves, and Parts for Piping Applications
This standard is issued under the fixed designationA 961/A 961M; 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 a group of common requirements that shall apply to steel flanges, forged fittings, valves, and parts
for piping applications under any of the following individual product specifications:
Title of Specification ASTM Designation
Forgings, Carbon Steel, for Piping Components A 105/A 105M
Forgings, Carbon Steel, for General-Purpose Piping A 181/A 181M
Forged or Rolled Alloy-Steel Pipe Flanges, Forged A 182/A 182M
Fittings, and Valves and Parts for High Temperature
Service
Forgings, Carbon and Low Alloy Steel, Requiring Notch A 350/A 350M
Toughness Testing for Piping Components
Forged or Rolled 8 and 9 % Nickel Alloy A 522/A 522M
Steel Flanges, Fittings, Valves, and Parts
for Low-Temperature Service
Forgings, Carbon and Alloy Steel, for Pipe Flanges, A 694/A 694M
Fittings, Valves, and Parts for High-Pressure
Transmission Service
Flanges, Forged, Carbon and Alloy Steel for Low A 707/A 707M
Temperature Service
Forgings, Carbon Steel, for Piping Components with A 727/A 727M
Inherent Notch Toughness
Forgings, Titanium-Stabilized Carbon Steel, for A 836/A 836M
Glass-Lined Piping and Pressure Vessel Service
1.2 In case of conflict between a requirement of the individual product specification and a requirement of this general
requirement specification, the requirements of the individual product specification shall prevail over those of this specification.
1.3 By mutual agreement between the purchaser and the supplier, additional requirements may be specified (see Section 4.1.2).
The acceptance of any such additional requirements shall be dependent on negotiations with the supplier and must be included in
the order as agreed upon between the purchaser and supplier.
1.4 The values stated in either inch-poundSI units or SIinch-pound units (metric) are to be regarded separately as standard.
Withinthetextandthetables,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemaremaynotbeexactequivalents;
therefore, each system mustshall be used independently of the other. Combining values from the two systems may result in
non-conformance with the specification.standard. The inch-pound units shall apply, unless the “M” designation (SI) of the product
specification is specified in the order.
2. Referenced Documents
2
2.1 ASTM Standards:
A 105/A 105M Specification for Carbon Steel Forgings for Piping Applications
A 181/A 181M Specification for Carbon Steel Forgings, for General-Purpose Piping
A 182/A 182M Specification for Forged or RolledAlloy and Stainless Steel Pipe Flanges, Forged Fittings, andValves and Parts
for High-Temperature Service
A 275/A 275M Practice for Magnetic Particle Examination of Steel Forgings
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.22
on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.
Current edition approved MayOct. 1, 2008. Published JuneNovember 2008. Originally approved in 1996. Last previous edition approved in 20072008 as
A 961/A 961M–078.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. 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
---------------------- Page: 1 ----------------------
A 961/A 961M – 08a
A 350/A 350M Specification for Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping
Components
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 522/A 522M Specification for Forged or Rolled 8 and 9% Nickel Alloy Steel Flanges, Fittings, Valves, and Parts for
Low-Temperature Service
A 694/A 694M Specification for Carbon and Al
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:A 961/A 961M–08 Designation: A961/A961M – 08a
Standard Specification for
Common Requirements for Steel Flanges, Forged Fittings,
1
Valves, and Parts for Piping Applications
This standard is issued under the fixed designationA961/A961M; 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 a group of common requirements that shall apply to steel flanges, forged fittings, valves, and parts
for piping applications under any of the following individual product specifications:
Title of Specification ASTM Designation
Forgings, Carbon Steel, for Piping ComponentsA 105/ A105/A105M
A 105M
Forgings, Carbon Steel, for Piping Components A105/A105M
Forgings, Carbon Steel, for General-Purpose PipingA 181/ A181/A181M
A 181M
Forgings, Carbon Steel, for General-Purpose Piping A181/A181M
Forged or Rolled Alloy-Steel Pipe Flanges, ForgedA 182/ A182/A182M
A 182M
Forged or Rolled Alloy-Steel Pipe Flanges, Forged A182/A182M
Fittings, and Valves and Parts for High Temperature
Service
Forgings, Carbon and Low Alloy Steel, Requiring Not- A350/A350M
chA 350/A 350M
Forgings, Carbon and Low Alloy Steel, Requiring Notch A350/A350M
Toughness Testing for Piping Components
Forged or Rolled 8 and 9 % Nickel AlloyA 522/A 522M A522/A522M
Forged or Rolled 8 and 9 % Nickel Alloy A522/A522M
Steel Flanges, Fittings, Valves, and Parts
for Low-Temperature Service
Forgings, Carbon and Alloy Steel, for Pipe Flanges,A 694/ A694/A694M
A 694M
Forgings, Carbon and Alloy Steel, for Pipe Flanges, A694/A694M
Fittings, Valves, and Parts for High-Pressure
Transmission Service
Flanges, Forged, Carbon and Alloy Steel for LowA 707/ A707/A707M
A 707M
Flanges, Forged, Carbon and Alloy Steel for Low A707/A707M
Temperature Service
Forgings, Carbon Steel, for Piping Components withA 727/ A727/A727M
A 727M
Forgings, Carbon Steel, for Piping Components with A727/A727M
Inherent Notch Toughness
Forgings, Titanium-Stabilized Carbon Steel, forA 836/ A836/A836M
A 836M
Forgings, Titanium-Stabilized Carbon Steel, for A836/A836M
Glass-Lined Piping and Pressure Vessel Service
1.2 In case of conflict between a requirement of the individual product specification and a requirement of this general
requirement specification, the requirements of the individual product specification shall prevail over those of this specification.
1.3 By mutual agreement between the purchaser and the supplier, additional requirements may be specified (see Section 4.1.2).
The acceptance of any such additional requirements shall be dependent on negotiations with the supplier and must be included in
the order as agreed upon between the purchaser and supplier.
1.4 The values stated in either inch-poundSI units or SIinch-pound units (metric) are to be regarded separately as standard.
Withinthetextandthetables,theSIunitsareshowninbrackets.Thevaluesstatedineachsystemaremaynotbeexactequivalents;
therefore, each system mustshall be used independently of the other. Combining values from the two systems may result in
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.22
on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.
Current edition approved MayOct. 1, 2008. Published JuneNovember 2008. Originally approved in 1996. Last previous edition approved in 20072008 as A 961/A
961M–07.A961/A961M–08. DOI: 10.1520/A0961_A0961M-08A.
*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 ----------------------
A961/A961M – 08a
non-conformance with the specification.standard. The inch-pound units shall apply, unless the “M” designation (SI) of the product
specification is specified in the order.
2. Referenced Documents
2
2.1 ASTM Standards:
A105/A105M Specification for Carbon Steel Forgings for Piping Applications
A181/A181M Specification for Carbon Steel Forgings, for General-Purpose Piping
A182/A182M Specification for Forged or RolledAlloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts
for High-Temperature Service
A275/A275M Practice for M
...
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