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ASTM A961/A961M-12

Historical Revision

Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications

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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 A105/A105M
Forgings, Carbon Steel, for General-Purpose Piping A181/A181M
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 Notch A350/A350M
Toughness Testing for Piping Components
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, A694/A694M
Fittings, Valves, and Parts for High-Pressure
Transmission Service
Flanges, Forged, Carbon and Alloy Steel for Low A707/A707M
Temperature Service
Forgings, Carbon Steel, for Piping Components with A727/A727M
Inherent Notch Toughness
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 SI units or inch-pound units are to be regarded separately as standard. Within the text and the tables, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply, unless the M designation (SI) of the product specification is specified in the order.


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.


SDO ASTM: ASTM International
Document Number A961
Publication Date May 1, 2012
Language en - English
Page Count 8
Revision Level 12
Supercedes
Committee A01.22
Publish Date Document Id Type View
Oct. 15, 2024 A0961_A0961M-24B Revision
Aug. 15, 2024 A0961_A0961M-24A Revision
May 1, 2024 A0961_A0961M-24 Revision
May 1, 2023 A0961_A0961M-23 Revision
Sept. 1, 2021 A0961_A0961M-21 Revision
June 1, 2020 A0961_A0961M-20 Revision
Nov. 1, 2019 A0961_A0961M-19A Revision
March 1, 2019 A0961_A0961M-19 Revision
Dec. 1, 2016 A0961_A0961M-16A Revision
June 1, 2016 A0961_A0961M-16 Revision
Nov. 1, 2015 A0961_A0961M-15 Revision
Nov. 1, 2014 A0961_A0961M-14 Revision
Oct. 1, 2013 A0961_A0961M-13 Revision
Nov. 1, 2012 A0961_A0961M-12A Revision
May 1, 2012 A0961_A0961M-12 Revision
May 1, 2011 A0961_A0961M-11 Revision
Oct. 1, 2008 A0961_A0961M-08A Revision
May 1, 2008 A0961_A0961M-08 Revision
Feb. 1, 2007 A0961_A0961M-07 Revision
March 1, 2005 A0961_A0961M-05 Revision
Sept. 1, 2004 A0961_A0961M-04A Revision