ASTM A707/A707M-19
(Specification)Standard Specification for Forged Carbon and Alloy Steel Flanges for Low-Temperature Service
Standard Specification for Forged Carbon and Alloy Steel Flanges for Low-Temperature Service
ABSTRACT
This specification covers forged carbon and alloy steel flanges intended primarily for petroleum and gas pipelines in areas subject to low ambient temperatures. Eight grades, four yield-strength classes, and three different notch toughness levels are included. All material shall be heat treated by annealing, normalizing, precipitation hardening, quenching-and-tempering, normalizing-and-tempering, normalizing-and-precipitation hardening, or quenching-and-precipitation hardening. A chemical heat analysis shall be made and conform to the requirements as to chemical composition specified. The material in the weld neck shall conform to the mechanical property requirements specified. Hardness test, impact test, ultrasonic test, tension test, and hydrostatic test shall be made to conform to the specified requirements.
SCOPE
1.1 This specification covers forged carbon and alloy steel flanges intended primarily for petroleum and gas pipelines in areas subject to low ambient temperatures. Included are flanges to specified dimensions or to dimensional standards such as those MSS, ASME, and API specifications that are referenced in Section 2.
1.2 Supplementary requirements are provided for use when additional requirements are desired. These shall apply only when specified individually by the purchaser in the order.
1.3 Eight grades, four yield-strength classes, and three different notch toughness levels are included.
1.4 The availability of a particular size of flange of a specific grade and class is limited only by the capability of the composition to meet the specified mechanical property requirements. However, current practice normally limits the following:
(a) Grade L1 to Classes 1 and 2,
(b) Grade L2 to Classes 1, 2, and 3,
(c) Grade L3 to Classes 1, 2, and 3,
(d) Grade L4 to Classes 1, 2, and 3,
(e) Grade L7 to Classes 1 and 2, and
(f) Grades L5, L6, and L8 are generally available in any class.
1.5 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished to inch-pound units.
1.6 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.
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.
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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.
Designation:A707/A707M −19
Standard Specification for
Forged Carbon and Alloy Steel Flanges for Low-
1
Temperature Service
This standard is issued under the fixed designationA707/A707M; 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* be used independently of the other. Combining values from the
two systems may result in nonconformance with the specifi-
1.1 This specification covers forged carbon and alloy steel
cation.
flanges intended primarily for petroleum and gas pipelines in
1.7 This international standard was developed in accor-
areassubjecttolowambienttemperatures.Includedareflanges
dance with internationally recognized principles on standard-
to specified dimensions or to dimensional standards such as
ization established in the Decision on Principles for the
those MSS, ASME, and API specifications that are referenced
Development of International Standards, Guides and Recom-
in Section 2.
mendations issued by the World Trade Organization Technical
1.2 Supplementary requirements are provided for use when
Barriers to Trade (TBT) Committee.
additional requirements are desired. These shall apply only
when specified individually by the purchaser in the order.
2. Referenced Documents
1.3 Eight grades, four yield-strength classes, and three
2.1 In addition to those reference documents listed in
different notch toughness levels are included.
Specification A961/A961M, the following list of standards
apply to this specification:
1.4 The availability of a particular size of flange of a
2
specific grade and class is limited only by the capability of the
2.2 ASTM Standards:
composition to meet the specified mechanical property require-
A388/A388M Practice for Ultrasonic Examination of Steel
ments. However, current practice normally limits the follow-
Forgings
ing:
A788/A788M Specification for Steel Forgings, General Re-
(a) Grade L1 to Classes 1 and 2,
quirements
(b) Grade L2 to Classes 1, 2, and 3,
A961/A961M Specification for Common Requirements for
(c) Grade L3 to Classes 1, 2, and 3,
Steel Flanges, Forged Fittings, Valves, and Parts for
(d) Grade L4 to Classes 1, 2, and 3,
Piping Applications
(e) Grade L7 to Classes 1 and 2, and
2.3 MSS Standards:
(f) Grades L5, L6, and L8 are generally available in any
3
SP 44 Steel Pipeline Flanges
class.
2.4 API Standard:
4
1.5 This specification is expressed in both inch-pound units
605 Large Diameter Carbon Steel Flanges
and in SI units. However, unless the order specifies the
2.5 ASME Boiler and Pressure Vessel Code:
applicable “M” specification designation (SI units), the mate-
5
Section VIII Division I, Part UG-84
rial shall be furnished to inch-pound units.
5
Section IX
1.6 The values stated in either inch-pound units or SI units
are to be regarded separately as standard. Within the text, the
SI units are shown in brackets. The values stated in each
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
system are not exact equivalents; therefore, each system must
contact ASTM 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.
3
AvailablefromManufacturersStandardizationSocietyoftheValveandFittings
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee hq.com.
4
A01.22 on Steel Forgings and Wrought Fittings for PipingApplications and Bolting Available from American Petroleum Institute (API), 1220 L. St., NW,
Materials for Piping and Special Purpose Applications. Washington, DC 20005-4070, http://api-ec.api.org.
5
Current edition approved Nov. 1, 2019. Published November 2019. Originally Available from American Society of Mechanical Engineers (ASME), ASME
approved in 1974. Last previous edition approved in 2014 as A707/A707M – 14. International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
DOI: 10.1520/A0707_A0707M-19. www.asme.org.
*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 ----------------------
A707/A707M−19
TABLE 1 Chemical Requirements
Grade
Element
A A B
L1 L2 L3 L4 L5 L6 L7 L8
Carbon, max, %
Heat analysis 0.20 0.30 0.
...
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: A707/A707M − 14 A707/A707M − 19
Standard Specification for
Forged Carbon and Alloy Steel Flanges for Low-
1
Temperature Service
This standard is issued under the fixed designation A707/A707M; 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 forged carbon and alloy steel flanges intended primarily for petroleum and gas pipelines in areas
subject to low ambient temperatures. Included are flanges to specified dimensions or to dimensional standards such as those MSS,
ASME, and API specifications that are referenced in Section 2.
1.2 Supplementary requirements are provided for use when additional requirements are desired. These shall apply only when
specified individually by the purchaser in the order.
1.3 Eight grades, four yield-strength classes, and three different notch toughness levels are included.
1.4 The availability of a particular size of flange of a specific grade and class is limited only by the capability of the composition
to meet the specified mechanical property requirements. However, current practice normally limits the following:
(a) Grade L1 to Classes 1 and 2,
(b) Grade L2 to Classes 1, 2, and 3,
(c) Grade L3 to Classes 1, 2, and 3,
(d) Grade L4 to Classes 1, 2, and 3,
(e) Grade L7 to Classes 1 and 2, and
(f) Grades L5, L6, and L8 are generally available in any class.
1.5 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable
“M” specification designation (SI units), the material shall be furnished to inch-pound units.
1.6 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units
are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used
independently of the other. Combining values from the two systems may result in nonconformance with the specification.
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.
2. Referenced Documents
2.1 In addition to those reference documents listed in Specification A961/A961M, the following list of standards apply to this
specification:
2
2.2 ASTM Standards:
A388/A388M Practice for Ultrasonic Examination of Steel Forgings
A788/A788M Specification for Steel Forgings, General Requirements
A961/A961M Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping
Applications
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 and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.
Current edition approved Oct. 1, 2014Nov. 1, 2019. Published October 2014November 2019. Originally approved in 1974. Last previous edition approved in 20132014
as A707/A707MA707/A707M – 14.–13. DOI: 10.1520/A0707_A0707M-14.10.1520/A0707_A0707M-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM 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 ----------------------
A707/A707M − 19
2.3 MSS Standards:
3
SP 44 Steel Pipeline Flanges
2.4 API Standard:
4
605 Large Diameter Carbon Steel Flanges
2.5 ASME Boiler and Pressure Vessel Code:
5
Section VIII Division I, Part UG-84
5
Section IX
2.6 ASME Standard:
5
B 16.5 Dimensional Standards for Steel Pipe Flanges and Flanged Fittings
2.7 AWS Standards:
6
A 5.5 Low-Alloy Steel Covered Arc-Welding Electrodes
3. Terminology
3.1 Definitions:
3.1.1 flakes—short discontinuous internal fissures attributed to stresses produced by localized transformation and decreased
solubility of hydrogen du
...
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