ASTM A533/A533M-93(1999)

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Used in USDOE-NE Standards
Designation: A 533/A 533M – 93 (Reapproved 1999)
Standard Specification for
Pressure Vessel Plates, Alloy Steel, Quenched and
Tempered, Manganese-Molybdenum and Manganese-
Molybdenum-Nickel
This standard is issued under the fixed designation A 533/A 533M; 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 1.7 Plates covered by this specification are often used in the
2 beltline region of nuclear reactor vessels where the material
1.1 This specification covers manganese-molybdenum and
properties may be affected by high levels of radiation. Appen-
manganese-molybdenum-nickel alloy steel plates for use in the
dix X1 provides some information pertinent to this usage.
quenched and tempered condition for the construction of
1.8 The values stated in either inch-pound units or SI units
welded pressure vessels.
are to be regarded separately as standard. Within the text, the
1.2 This specification includes four types of chemical analy-
SI units are shown in brackets. The values stated in each
sis and three classes of strength levels as follows:
system are not exact equivalents; therefore, each system must
Nominal Nominal
be used independently of the other. Combining values from the
Molybdenum Nickel
Content, Content,
two systems may result in nonconformance with the specifi-
Type % %
cation.
A 0.50 . . .
2. Referenced Documents
B 0.50 0.55
C 0.50 0.85
2.1 ASTM Standards:
D 0.50 0.30
A 20/A 20M Specification for General Requirements for
Tensile Strength,
Steel Plates for Pressure Vessels
Class ksi [MPa]
A 435/A 435M Specification for Straight-Beam Ultrasonic
Examination of Steel Plates
1 80–100 [550 to 690]
2 90–115 [620 to 795]
A 577/A 577M Specification for Ultrasonic Angle-Beam
3 100–125 [690 to 860]
Examination of Steel Plates
1.3 The maximum thickness of Class 1 and Class 2 plates is
A 578/A 578M Specification for Straight-Beam Ultrasonic
limited only by the capacity of the composition to meet the Examination of Plain and Clad Steel Plates for Special
specified mechanical property requirements; however, current
Applications
practice normally limits the maximum thickness to 12 in. [300
3. General Requirements and Ordering Information
mm].
1.4 The maximum thickness of Class 3 plates is 2 ⁄2 in. [65 3.1 Material supplied to this material specification shall
mm]. conform to Specification A 20/A 20M. These requirements
1.5 The minimum nominal thickness of plates of all classes outline the testing and retesting methods and procedures,
is 0.25 in. [6.5 mm]. permissible variations in dimensions, and mass, quality and
1.6 These alloy steel plates in the as-rolled condition are repair of defects, marking, loading, etc.
sensitive to cracking during transit and handling, particularly in 3.2 Specification A 20/A 20M also establishes the rules for
thicknesses over about 1 or 2 in. [25 or 50 mm]. They should the ordering information which should be complied with when
be shipped in the as-rolled conditions only with the mutual purchasing material to this specification.
agreement of manufacturer and fabricator. 3.3 In addition to the basic requirements of this specifica-
tion, certain supplementary requirements are available when
additional control, testing, or examination is required to meet
end use requirements. These include:
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
3.3.1 Vacuum treatment,
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
3.3.2 Additional or special tension testing,
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved June 15, 1993. Published August 1993. Originally
published as A 533 – 65. Last previous edition A 533/A 533M – 90.
For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
cation SA-533/SA-533M in Section II of that Code. Annual Book of ASTM Standards, Vol 01.04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
A 533/A 533M – 93 (1999)
3.3.3 Impact testing, and than 1100°F [595°C] with a minimum holding time of ⁄2 h/in.
[1.2 min/mm] of thickness, but not less than ⁄2 h.
3.3.4 Nondestructive examination.
5.2 When the plates are heat treated by the fabricator, it
3.4 The purchaser is referred to the listed supplementary
shall be his responsibility to apply the proper heat treatment
requirements in this specification and to the detailed require-
and to conduct tests he deems necessary to assure that the
ments in Specification A 20/A 20M.
specified properties are attained.
3.5 If the requirements of this specification are in conflict
with the requirements of Specification A 20/A 20M, the re-
6. Chemical Requirements
quirements of this specification shall prevail.
6.1 The steel shall conform to the chemical requirements
shown in Table 1 unless otherwise modified in accordance with
4. Manufacture
Supplementary Requirement S17, Vacuum Carbon-Deoxidized
4.1 Steelmaking Practice—The steel shall be killed and
Steel, in Specification A 20/A 20M.
shall conform to the
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