ASTM A350/A350M-00b

Standard Specification for Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping Components

SCOPE
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 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.
Note 1—Refer to Test Methods and Definitions A370 for notes on significance of notched-bar impact testing.

General Information

• Status: Historical
• Publication Date: 09-Mar-2002
• ICS: 23.040.40 - Metal fittings
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.22 - Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications

Relations

• Replaced By: ASTM A350/A350M-00c - Standard Specification for Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping Components
• Effective Date: 10-Mar-2002
• Referred By: ASTM A961/A961M-23 - Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, Valves, and Parts for Piping Applications
• Effective Date: 10-Mar-2002
• Referred By: ASTM A420/A420M-22 - Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service
• Effective Date: 10-Mar-2002
• Referred By: ASTM A727/A727M-14(2019) - Standard Specification for Carbon Steel Forgings for Piping Components with Inherent Notch Toughness
• Effective Date: 10-Mar-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A 350/A 350M – 00b An American National Standard
Standard Specification for
Carbon and Low-Alloy Steel Forgings, Requiring Notch
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Toughness Testing for Piping Components
This standard is issued under the fixed designation A 350/A 350M; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
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1. Scope nation of Steel Forgings
2
A 370 Test Methods and Definitions for Mechanical Testing
1.1 This specification covers several grades of carbon and
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of Steel Products
low-alloy steel forged or ring-rolled flanges, forged fittings and
A 751 Test Methods, Practices, and Terminology for
valves intended primarily for low-temperature service and
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Chemical Analysis of Steel Products
requiring notch toughness testing. They are made to specified
A 788 Specification for Steel Forgings, General Require-
dimensions, or to dimensional standards, such as the ASME
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ments
and API Specifications referenced in Section 2. Although this
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E 165 Test Method for Liquid Penetrant Examination
specification covers some piping components machined from
E 381 Method of Macroetch Testing Steel Bars, Billets,
rolled bar and seamless tubular materials (see 4.3.3), it does not
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Blooms, and Forgings
cover raw material produced in these product forms.
2.2 MSS Standard:
1.2 No limitation on size is intended beyond the ability of
MSS-SP 25 Standard Marking System for Valves, Fittings,
the manufacturer to obtain the specified requirements. How-
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Flanges and Unions
ever, Class 3 of Grade LF787 is only available in the
2.3 ASME Standards:
quenched-and-precipitation heat treated condition.
Section IX, Welding Qualifications, ASME Boiler and Pres-
1.3 Supplementary requirements are provided for use when
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sure Vessel Code
additional testing or inspection is desired. These shall apply
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B 16.5 Steel Pipe Flanges and Flanged Fittings
only when specified by the purchaser in the order.
B 16.9 Factory-Made Wrought Steel Butt-Welding Fit-
1.4 This specification is expressed in both inch-pound units
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tings
and in SI units. However, unless the order specifies the
B 16.10 Face-to-Face and End-to-End Dimensions of Fer-
applicable “M” specification designation (SI units), the mate-
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rous Valves
rial shall be furnished to inch-pound units.
B 16.11 Forged Steel Fittings, Socket-Welding and
1.5 The values stated in either inch-pound units or SI units
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Threaded
are to be regarded separately as standard. Within the text, the
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B 16.30 Unfired Pressure Vessel Flange Dimensions
SI units are shown in brackets. The values stated in each
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B 16.34 Valves-Flanged, Threaded, and Welding End
system are not exact equivalents; therefore, each system must
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B 16.47 Large Diameter Steel Flanges
be used independently of the other. Combining values from the
2.4 AWS Standards:
two systems may result in nonconformance with the specifi-
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A 5.1 Mild Steel Covered Arc-Welding Electrodes
cation.
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A 5.5 Low-Alloy Steel Covered Arc-Welding Electrodes
NOTE 1—Refer to Test Methods and Definitions A 370 for notes on 10
2.5 API Standards:
significance of notched-bar impact testing.
600 Steel Gate Valves with Flanged or Butt-Welding Ends
2. Referenced Documents
2.1 ASTM Standards:
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A 275/A 275M Test Method for Magnetic Particle Exami-
Annual Book of ASTM Standards, Vol 01.05.
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Annual Book of ASTM Standards, Vol 01.03.
5
Annual Book of ASTM Standards, Vol 03.03.
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
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Annual Book of ASTM Standards, Vol 03.01.
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
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Available from the Manufacturer’s Standardization Society of the Valve and
A01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting
Fittings Industry, 1815 N. Fort Myer Drive, Arlington, VA 22209.
Materials for Piping and Special Purpose Applications.
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Available from ASME International, Three Park Avenue, New York, NY
Current edition approved September 10, 2000. Published December 2000.
10016–5990.
Originally published as A 350 – 52 T. Last previous edition A 350/A 350M – 00a.
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2 Available from American Welding Society, 550 LeJeune Rd., P.O. Box 351040,
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
Miami, FL 33135.
cation SA-350 in Section II of that Code.
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Available from American Petroleum Institute, 1220 L Street N.W., Washing-
ton, DC 20005.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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