ASTM A662/A662M-99
(Specification)Standard Specification for Pressure Vessel Plates, Carbon-Manganese-Silicon Steel, for Moderate and Lower Temperature Service
Standard Specification for Pressure Vessel Plates, Carbon-Manganese-Silicon Steel, for Moderate and Lower Temperature Service
SCOPE
1.1 This specification covers three grades of carbon-manganese-silicon steel plates intended primarily for service in welded pressure vessels where improved low temperature notch toughness is important.
1.2 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements; however, current practice normally limits the maximum thickness of plates furnished under this specification to 2 in. [50 mm].
1.3 Grades A, B, and C comply substantially with the requirements of ISO Pressure Vessel Steels P9, P15, and P18, respectively.
1.4 For plates produced from coil, the additional requirements, including additional testing requirements and the reporting of additional test results, of Specification A 20/A 20M apply.
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.
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Designation: A 662/A 662M – 99
AMERICAN SOCIETY FOR TESTING AND MATERIALS
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Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Pressure Vessel Plates, Carbon-Manganese-Silicon Steel,
for Moderate and Lower Temperature Service
This standard is issued under the fixed designation A 662/A 662M; 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.
1. Scope outline the testing and retesting methods and procedures,
permissible variations in dimensions, and mass, quality, and
1.1 This specification covers three grades of carbon-
repair of defects, marking, loading, etc.
manganese-silicon steel plates intended primarily for service in
3.2 Specification A 20/A 20M also establishes the rules for
welded pressure vessels where improved low temperature
the ordering information that should be complied with when
notch toughness is important.
purchasing material to this specification.
1.2 The maximum thickness of plates is limited only by the
3.3 In addition to the basic requirements of this specification
capacity of the composition to meet the specified mechanical
certain supplementary requirements are available when addi-
property requirements; however, current practice normally
tional control, testing, or examination is required to meet the
limits the maximum thickness of plates furnished under this
end use requirements. These include:
specification to 2 in. [50 mm].
3.3.1 Vacuum treatment.
1.3 Grades A, B, and C comply substantially with the
3.3.2 Additional or special tension testing,
requirements of ISO Pressure Vessel Steels P9, P15, and P18,
3.3.3 Impact testing, and
respectively.
3.3.4 Nondestructive examination.
1.4 The values stated in either inch-pound units or SI units
3.4 The purchaser is referred to the listed supplementary
are to be regarded separately as standard. Within the text, the
requirements in this specification and to the detailed require-
SI units are shown in brackets. The values stated in each
ments in Specification A 20/A 20M.
system are not exact equivalents; therefore, each system must
3.4.1 If the requirements of this specification are in conflict
be used independently of the other. Combining values from the
with the requirements of Specification A 20/A 20M, the re-
two systems may result in nonconformance with the specifi-
quirements of this specification shall prevail.
cation.
4. Manufacture
2. Referenced Documents
4.1 Steelmaking Practice—The steel shall be killed and
2.1 ASTM Standards:
shall conform to the fine austenitic grain size requirement of
A 20/A 20M Specification for General Requirements for
Specification A 20/A 20M.
Steel Plates for Pressure Vessels
A 435/A 435M Specification for Straight-Beam Ultrasonic
5. Heat Treatment
Examination of Steel Plates
5.1 All plates of Grade A and plates of Grades B and C over
A 577/A 577M Specification for Ultrasonic Angle-Beam
3 1 ⁄2 in. [40 mm] in thickness shall be normalized.
Examination of Steel Plates
5.2 Plates of Grades B and C, 1 ⁄2 in. [40 mm] and under in
A 578/A 578M Specification for Straight-Beam Ultrasonic
thickness, are normally supplied in the as-rolled condition. The
Examination of Plain and Clad Steel Plates for Special
3 plates may be ordered normalized or stress relieved, or both.
Applications
6. Chemical Requirements
3. General Requirements and Ordering Information
6.1 The steel shall conform to the requirements as to
3.1 Material supplied to this material specification shall
chemical composition prescribed in Table 1 unless otherwise
conform to Specification A 20/A 20M. These requirements
modified in accordance with Supplementary Requirement S17,
Vacuum Carbon-Deoxidized Steel, in Specification A 20/
This specification is under the jurisdiction of Committee A-1 on Steel, Stainless
A 20M.
Steel, and Related Alloys and is the direct responsibility of Subcommittee A01.11 on
Steel Plates for Boilers and Pressure Vessels.
7. Mechanical Requirements
Curr
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