ASTM A350/A350M-13
(Specification)Standard Specification for Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping Components
Standard Specification for Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping Components
ABSTRACT
This specification covers several grades of carbon and low alloy steel forged or ring-rolled flanges, forged fittings and valves for low-temperature service. The steel specimens shall be melt processed using open-hearth, basic oxygen, electric furnace or vacuum-induction melting. A sufficient discard shall be made to secure freedom from injurious piping and undue segregation. The materials shall be forged and shall undergo heat treatment such as normalizing, tempering, quenching and precipitation heat treatment. Heat analysis and product analysis shall be performed wherein the steel materials shall conform to the required chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, copper, columbium, vanadium, and nitrogen. The materials shall also undergo tension tests and shall conform to the required values of tensile strength, yield strength and elongation. Impact tests shall also be performed and the steel materials shall conform to the required values of minimum impact energy, temperature, and minimum equivalent absorbed energy. Hardness and hydrostatic tests shall also be performed.
SCOPE
1.1 This specification2 covers several grades of carbon and low-alloy steel forged or ring-rolled flanges, forged fittings and valves intended primarily for low-temperature service and requiring notch toughness testing. They are made to specified dimensions, or to dimensional standards, such as the ASME and API Specifications referenced in Section 2. Although this specification covers some piping components machined from rolled bar and seamless tubular materials (see 5.3.3), it does not cover raw material produced in these product forms.
1.2 No limitation on size is intended beyond the ability of the manufacturer to obtain the specified requirements. However, Class 3 of Grade LF787 is only available in the quenched-and-precipitation heat treated condition.
1.3 Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only when specified by the purchaser in the order.
1.4 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.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, 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.
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Designation:A350/A350M −13
StandardSpecification for
Carbon and Low-Alloy Steel Forgings, Requiring Notch
1
Toughness Testing for Piping Components
This standard is issued under the fixed designationA350/A350M; 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 U.S. Department of Defense.
1. Scope* 2. Referenced Documents
3
2
2.1 ASTM Standards:
1.1 This specification covers several grades of carbon and
A788/A788M Specification for Steel Forgings, General Re-
low-alloy steel forged or ring-rolled flanges, forged fittings and
quirements
valves intended primarily for low-temperature service and
A961/A961M Specification for Common Requirements for
requiring notch toughness testing. They are made to specified
Steel Flanges, Forged Fittings, Valves, and Parts for
dimensions, or to dimensional standards, such as the ASME
Piping Applications
and API Specifications referenced in Section 2. Although this
2.2 ASME Standards:
specification covers some piping components machined from
4
B 16.5 Steel Pipe Flanges and Flanged Fittings
rolledbarandseamlesstubularmaterials(see5.3.3),itdoesnot 4
B 16.9 Factory-MadeWroughtSteelButt-WeldingFittings
cover raw material produced in these product forms.
B 16.10 Face-to-Face and End-to-End Dimensions of
4
Ferrous Valves
1.2 No limitation on size is intended beyond the ability of
B 16.11 Forged Steel Fittings, Socket-Welding and
the manufacturer to obtain the specified requirements.
4
Threaded
However, Class 3 of Grade LF787 is only available in the
4
B 16.30 Unfired Pressure Vessel Flange Dimensions
quenched-and-precipitation heat treated condition.
4
B 16.34 Valves-Flanged, Threaded, and Welding End
4
1.3 Supplementary requirements are provided for use when
B 16.47 Large Diameter Steel Flanges
additional testing or inspection is desired. These shall apply 2.3 ASME Boiler and Pressure Vessel Code:
2
only when specified by the purchaser in the order. Section IX Welding Qualifications
2.4 AWS Standards:
1.4 This specification is expressed in both inch-pound units 5
A 5.1 Mild Steel Covered Arc-Welding Electrodes
and in SI units. However, unless the order specifies the 5
A 5.5 Low-Alloy Steel Covered Arc-Welding Electrodes
6
applicable “M” specification designation (SI units), the mate-
2.5 API Standards:
rial shall be furnished to inch-pound units.
600 Steel Gate Valves with Flanged or Butt-Welding Ends
602 Compact Design Carbon Steel Gate Valves for Refinery
1.5 The values stated in either SI units or inch-pound units
Use
are to be regarded separately as standard. Within the text, the
605 Large Diameter Carbon Steel Flanges
SI units are shown in brackets. The values stated in each
system may not be exact equivalents; therefore, each system
3. Ordering Information
shall be used independently of the other. Combining values
3.1 It is the purchaser’s responsibility to specify in the
from the two systems may result in non-conformance with the
purchase order information necessary to purchase the needed
standard.
3
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
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel, Standards volume information, refer to the standard’s Document Summary page on
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee the ASTM website.
4
A01.22 on Steel Forgings andWrought Fittings for PipingApplications and Bolting Available from American Society of Mechanical Engineers (ASME), ASME
Materials for Piping and Special Purpose Applications. International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
Current edition approved Oct. 1, 2013. Published October 2013. Originally www.asme.org.
5
approved in 1952. Last previous edition approved in 2012 as A350/A350M–12. Available from American Welding Society (AWS), 550 NW LeJeune Rd.,
DOI: 10.1520/A0350_A0350M-13. Miami, FL 33126, http://www.aws.org.
2 6
For ASME Boiler and Pressure Vessel Code applications see related Specifi- Available from American Petroleum Institute (API), 1220 L. St., NW,
cation SA-350 in Section II of that Code. Washington, DC 20005-4070, http://api-ec.api.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 ----------------------
A350/A350M−13
material. In addition to the ordering information guidelines in Elbows, ret
...
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: A350/A350M − 12 A350/A350M − 13
Standard Specification for
Carbon and Low-Alloy Steel Forgings, Requiring Notch
1
Toughness Testing for Piping Components
This standard is issued under the fixed designation A350/A350M; 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*
2
1.1 This specification covers several grades of carbon and low-alloy steel forged or ring-rolled flanges, forged fittings and
valves intended primarily for low-temperature service and requiring notch toughness testing. They are made to specified
dimensions, or to dimensional standards, such as the ASME and API Specifications referenced in Section 2. Although this
specification covers some piping components machined from rolled bar and seamless tubular materials (see 5.3.3), it does not cover
raw material produced in these product forms.
1.2 No limitation on size is intended beyond the ability of the manufacturer to obtain the specified requirements. However, Class
3 of Grade LF787 is only available in the quenched-and-precipitation heat treated condition.
1.3 Supplementary requirements are provided for use when additional testing or inspection is desired. These shall apply only
when specified by the purchaser in the order.
1.4 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.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units
are shown in brackets. The values stated in each system may not be exact quivalents;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.
2. Referenced Documents
3
2.1 ASTM Standards:
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
2.2 ASME Standards:
4
B 16.5 Steel Pipe Flanges and Flanged Fittings
4
B 16.9 Factory-Made Wrought Steel Butt-Welding Fittings
4
B 16.10 Face-to-Face and End-to-End Dimensions of Ferrous Valves
4
B 16.11 Forged Steel Fittings, Socket-Welding and Threaded
4
B 16.30 Unfired Pressure Vessel Flange Dimensions
4
B 16.34 Valves-Flanged, Threaded, and Welding End
4
B 16.47 Large Diameter Steel Flanges
2.3 ASME Boiler and Pressure Vessel Code:
2
Section IX Welding Qualifications
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 March 1, 2012Oct. 1, 2013. Published April 2012October 2013. Originally approved in 1952. Last previous edition approved in 20112012 as
A350/A350M–11.–12. DOI: 10.1520/A0350_A0350M-12.10.1520/A0350_A0350M-13.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-350 in Section II of that Code.
3
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.
4
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
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 ----------------------
A350/A350M − 13
2.4 AWS Standards:
5
A 5.1 Mild Steel Covered Arc-Welding Electrodes
5
A 5.5 Low-Alloy Steel Covered Arc-Welding Electrodes
6
2.5 API Standards:
600 Steel Gate Valves with Flanged or Butt-Welding Ends
602 Compact Design Carbon Steel Gate Valves for Refinery Use
605 Large Diameter Carbon Steel Flanges
3. Ordering Information
3.1 It is the purchaser’s responsibility to spe
...
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