ASTM A387/A387M-99e1

Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum

SCOPE
1.1 This specification covers chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service.
1.2 Plates are available under this specification in several grades having different alloy contents as follows: NominalNominal ChromiumMolybdenumGrade Content, %Content, %20.500.50121.000.50111.250.5022, 22L2.251.0021, 21L3.001.0055.000.5099.001.00919.001.00 911 9.001.00
1.3 Each grade except Grades 21L, 22L, 91 and 911 is available in two classes of tensile strength levels as defined in the Tensile Requirements tables, depending on heat treatment. In the annealed condition all grades are available only as Class 1. Grades 21L and 22L are available only as Class 1. Grade 91 and 911 are available only as Class 2.
1.4 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements.
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 this specification.

General Information

• Status: Historical
• Publication Date: 09-Mar-1999
• ICS: 77.140.30 - Steels for pressure purposes
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.11 - Steel Plates for Boilers and Pressure Vessels

Relations

• Replaces: ASTM A387/A387M-99 - Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum
• Effective Date: 10-Mar-1999
• Replaced By: ASTM A387/A387M-03 - Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum
• Effective Date: 10-May-2003
• Referred By: ASTM F1155-10(2019) - Standard Practice for Selection and Application of Piping System Materials
• Effective Date: 10-Mar-1999
• Referred By: ASTM A542/A542M-19 - Standard Specification for Pressure Vessel Plates, Alloy Steel, Quenched-and-Tempered, Chromium-Molybdenum, and Chromium-Molybdenum-Vanadium
• Effective Date: 10-Mar-1999
• Referred By: ASTM A20/A20M-20 - Standard Specification for General Requirements for Steel Plates for Pressure Vessels
• Effective Date: 10-Mar-1999
• Referred By: ASTM A691/A691M-19 - Standard Specification for Carbon and Alloy Steel Pipe, Electric-Fusion-Welded for High-Pressure Service at High Temperatures
• Effective Date: 10-Mar-1999

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Used in USDOE-NE Standards
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Designation: A 387/A 387M – 99
Standard Specification for
Pressure Vessel Plates, Alloy Steel, Chromium-
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Molybdenum
This standard is issued under the fixed designation A 387/A 387M; 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.
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e NOTE—Editorial changes were made throughout in June 2001.
1. Scope 2. Referenced Documents
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1.1 This specification covers chromium-molybdenum alloy 2.1 ASTM Standards:
steel plates intended primarily for welded boilers and pressure A 20/A 20M Specification for General Requirements for
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vessels designed for elevated temperature service. Steel Plates for Pressure Vessels
1.2 Plates are available under this specification in several A 370 Test Methods and Definitions for Mechanical Testing
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grades having different alloy contents as follows: of Steel Products
A 435/A 435M Specification for Straight-Beam Ultrasonic
Nominal Nominal
3
Chromium Molybde-
Examination of Steel Plates
num
A 577/A 577M Specification for Ultrasonic Angle-Beam
Grade Content, % Content, %
3
Examination of Steel Plates
2 0.50 0.50
12 1.00 0.50
A 578/A 578M Specification for Straight-Beam Ultrasonic
11 1.25 0.50
Examination of Plain and Clad Steel Plates for Special
22, 22L 2.25 1.00
3
Applications
21, 21L 3.00 1.00
5 5.00 0.50
9 9.00 1.00
3. General Requirements and Ordering Information
91 9.00 1.00
3.1 Material supplied to this material specification shall
911 9.00 1.00
conform to Specification A 20/A 20M. These requirements
1.3 Each grade except Grades 21L, 22L, 91 and 911 is
outline the testing and retesting methods and procedures,
available in two classes of tensile strength levels as defined in
permissible variations in dimensions and weight, quality and
the Tensile Requirements tables, depending on heat treatment.
repair of defects, marking, loading, etc.
In the annealed condition all grades are available only as Class
3.2 Specification A 20/A 20M also establishes the rules for
1. Grades 21L and 22L are available only as Class 1. Grade 91
the ordering information that should be complied with when
and 911 are available only as Class 2.
purchasing material to this specification.
1.4 The maximum thickness of plates is limited only by the
3.3 In addition to the basic requirements of this specifica-
capacity of the composition to meet the specified mechanical
tion, certain supplementary requirements are available when
property requirements.
additional control, testing, or examination is required to meet
1.5 The values stated in either inch-pound units or SI units
end use requirements. These include:
are to be regarded separately as standard. Within the text, the
3.3.1 Vacuum treatment,
SI units are shown in brackets. The values stated in each
3.3.2 Additional or special tension testing,
system are not exact equivalents. Therefore, each system must
3.3.3 Impact testing, and
be used independently of the other. Combining values from the
3.3.4 Nondestructive examination.
two systems may result in nonconformance with this specifi-
3.4 The purchaser is referred to the listed supplementary
cation.
requirements in this specification and to the detailed require-
ments in Specification A 20/A 20M. If the requirements of this
specification are in conflict with the requirements of Specifi-
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
cation A 20/A 20M, the requirements of this specification shall
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
A01.11 on Steel Plates for Boilers and Pressure Vessels. prevail.
Current edition approved March 10, 1999. Published June 1999. Originally
published as A 387 – 55 T. Last previous edition A 387/A 387M – 98.
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For ASME Boiler and Pressure Vessel Code applications, see related Specifi- Annual Book of ASTM Standards, Vol 01.04.
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cation SA-387/SA-387M in Section II of that Code. Annual Book of ASTM Standards, Vol 01.01.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
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A 387/A 387M – 99
4. Manufacture modified in accordance with Supplementary Requirement S17,
Vacuum Carbon-Deoxidized Steel, in Specification A 20/
4.1 Steelmaking Practice—The steel shall be killed.
A 20M for grades other than Grade 11.
5. Heat Treatment
5.1 Except for Grades 91 and 911, all plates shall be 7. Metallurgical Structure
...