ASTM A302/A302M-17(2022)
(Specification)Standard Specification for Pressure Vessel Plates, Alloy Steel, Manganese-Molybdenum and Manganese-Molybdenum-Nickel
Standard Specification for Pressure Vessel Plates, Alloy Steel, Manganese-Molybdenum and Manganese-Molybdenum-Nickel
ABSTRACT
This specification covers manganese-molybdenum and manganese-molybdenum-nickel alloy steel plates intended particularly for welded boilers and other pressure vessels. According to their strength levels, the plates are available in four grades: Grades A, B, C, and D. The maximum thickness of plates is limited only by the capacity of the chemical composition to meet the specified mechanical property requirements. The steel shall be killed and shall conform to fine grain size requirements. The plates shall be subjected to tension test to determine the tensile strength, yield strength, and elongation.
SCOPE
1.1 This specification2 covers manganese-molybdenum and manganese-molybdenum-nickel alloy steel plates intended particularly for welded boilers and other pressure vessels.
1.2 Plates under this specification are available in four grades having different strength levels as follows:
Grade
Tensile Strength,
ksi [MPa]
Type
A
75–95 [515–655]
manganese-molybdenum
B
80–100 [550–690]
manganese-molybdenum
C
80–100 [550–690]
manganese-molybdenum-nickel
D
80–100 [550–690]
manganese-molybdenum-nickel
1.3 The maximum thickness of plates is limited only by the capacity of the chemical composition to meet the specified mechanical property requirements.
1.4 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.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: A302/A302M −17 (Reapproved 2022)
Standard Specification for
Pressure Vessel Plates, Alloy Steel, Manganese-
Molybdenum and Manganese-Molybdenum-Nickel
This standard is issued under the fixed designationA302/A302M; 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
2.1 ASTM Standards:
1.1 This specification covers manganese-molybdenum and
A20/A20M SpecificationforGeneralRequirementsforSteel
manganese-molybdenum-nickel alloy steel plates intended par-
Plates for Pressure Vessels
ticularly for welded boilers and other pressure vessels.
A435/A435M Specification for Straight-Beam Ultrasonic
1.2 Plates under this specification are available in four
Examination of Steel Plates
grades having different strength levels as follows:
A577/A577M Specification for Ultrasonic Angle-Beam Ex-
Tensile Strength, amination of Steel Plates
Grade Type
ksi [MPa]
A578/A578M Specification for Straight-Beam Ultrasonic
A 75–95 [515–655] manganese-molybdenum
Examination of Rolled Steel Plates for Special Applica-
B 80–100 [550–690] manganese-molybdenum
C 80–100 [550–690] manganese-molybdenum-nickel
tions
D 80–100 [550–690] manganese-molybdenum-nickel
3. General Requirements and Ordering Information
1.3 The maximum thickness of plates is limited only by the
3.1 Material supplied to this material specification shall
capacity of the chemical composition to meet the specified
conform to Specification A20/A20M. These requirements out-
mechanical property requirements.
line the testing and retesting methods and procedures, permit-
1.4 The values stated in either inch-pound units or SI units
ted variations in dimensions, and mass, quality and repair of
are to be regarded separately as standard. Within the text, the
defects, marking, loading, and ordering information.
SI units are shown in brackets. The values stated in each
3.2 In addition to the basic requirements of this
system are not exact equivalents; therefore, each system must
specification, certain supplementary requirements are available
be used independently of the other. Combining values from the
when additional control, testing, or examination is required to
two systems may result in nonconformance with the specifi-
meet end use requirements. The purchaser is referred to the
cation.
listed supplementary requirements in this specification and to
1.5 This international standard was developed in accor- the detailed requirements in Specification A20/A20M.
dance with internationally recognized principles on standard-
3.3 Coils are excluded from qualification to this specifica-
ization established in the Decision on Principles for the
tion until they are processed into finished plates. Plates
Development of International Standards, Guides and Recom-
produced from coil means plates that have been cut to
mendations issued by the World Trade Organization Technical
individuallengthsfromcoil.Theprocessordirectlycontrols,or
Barriers to Trade (TBT) Committee.
is responsible for, the operations involved in the processing of
coils into finished plates. Such operations include decoiling,
leveling, cutting to length, testing, inspection, conditioning,
heat treatment (if applicable), packaging, marking, loading for
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
shipment, and certification.
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved Sept. 1, 2022. Published September 2022. Originally
approved in 1947. Last previous edition approved in 2017 as A302/A302M – 17. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/A0302_A0302M-17R22. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
For ASME Boiler and Pressure Vessel Code applications, see related Specifi- Standardsvolume information, refer to the standard’s Document Summary page on
cation SA-302/SA-302M in Section II of that Code. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
A302/A302M − 17 (2022)
TABLE 1 Chemical Requirements
NOTE 1—Where “…” appears, there is no requirement.
Composition, %
Elements
Grade A Grade B Grade C Grade D
A
Carbon, max:
Up to 1 in. [25 mm], incl, in thickness 0.20 0.20 0.20 0.20
Over 1 in. to 2 in. [50 mm], incl 0.23 0.23 0.23 0.23
Over 2 in. [50 mm] in thickness 0.25 0.25 0.25 0.25
Manganese:
Heat analysis 0.95–1.30 1.15–1.50 1.15–1.50 1.15–1.50
Product analysis 0.87–1.41 1.07–1.62 1.07–1.62 1.07–1.62
A
Phosphorus, max 0.025 0.025 0.025 0.025
A
Sulfur, max 0.025 0.025 0.025 0.025
Silicon:
Heat analysis 0.15–0.40 0.15–0.40 0.15–0.40 0.15–0.40
Product analysis 0.13–0.45 0.13–0.45 0.13–0.45 0.13–0.45
Molybd
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.