ASTM A543/A543M-09(2014)

Standard Specification for Pressure Vessel Plates, Alloy Steel, Quenched and Tempered Nickel-Chromium-Molybdenum

ABSTRACT
This specification covers nickel-chromium-molybdenum alloy steel plates for use in the quenched and tempered condition, intended for the fabrication of welded pressure vessels and other pressure equipment. Material under this specification is available in two types, B and C. The material is also available in three classes as follows: Class 1; Class 2; and Class 3. The steel shall be killed and shall conform to the fine austenitic grain size requirement. All plates shall be heat treated by heating to a suitable austenitizing temperature. The steel shall conform to the chemical requirements specified. Tension tests shall be made to meet the required specifications.
SCOPE
1.1 This specification2 covers nickel-chromium-molybdenum alloy steel plates for use in the quenched and tempered condition, intended for the fabrication of welded pressure vessels and other pressure equipment. These alloy compositions are normally considered for construction involving plate thicknesses of 2 in. [50 mm] or greater.  
1.2 Material under this specification is available in two types, B and C. The material is also available in three classes as follows:
Class  
Minimum Tensile Strength, ksi [MPa]  
1  
105 [725]  
2  
115 [795]  
3  
90 [620]  
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 minimum plate thickness is 3/16 in. [5 mm].  
1.5 These alloy steel plates in the as-rolled condition are sensitive to cracking during flame cutting, transit, and handling. They should be shipped in the as-rolled condition only with the mutual agreement of the manufacturer and the purchaser or fabricator.  
1.6 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.

General Information

• Status: Historical
• Publication Date: 28-Feb-2014
• 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

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A543/A543M −09 (Reapproved 2014)
Standard Specification for
Pressure Vessel Plates, Alloy Steel, Quenched and
1
Tempered Nickel-Chromium-Molybdenum
This standard is issued under the fixed designationA543/A543M; 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.
1. Scope 2. Referenced Documents
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2
2.1 ASTM Standards:
1.1 This specification covers nickel-chromium-
A20/A20M SpecificationforGeneralRequirementsforSteel
molybdenum alloy steel plates for use in the quenched and
Plates for Pressure Vessels
tempered condition, intended for the fabrication of welded
A435/A435M Specification for Straight-Beam Ultrasonic
pressure vessels and other pressure equipment. These alloy
Examination of Steel Plates
compositions are normally considered for construction involv-
A577/A577M Specification for Ultrasonic Angle-Beam Ex-
ing plate thicknesses of 2 in. [50 mm] or greater.
amination of Steel Plates
1.2 Material under this specification is available in two
A578/A578M Specification for Straight-Beam Ultrasonic
types, B and C. The material is also available in three classes
Examination of Rolled Steel Plates for Special Applica-
as follows:
tions
Class Minimum Tensile Strength, ksi [MPa]
1 105 [725]
3. General Requirements and Ordering Information
2 115 [795]
3.1 Material supplied to this material specification shall
3 90 [620]
conform to Specification A20/A20M. These requirements out-
1.3 The maximum thickness of plates is limited only by the
line the testing and retesting methods and procedures, permit-
capacity of the chemical composition to meet the specified
ted variations in dimensions, and mass, quality and repair of
mechanical property requirements.
defects, marking, loading, and ordering information.
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1.4 The minimum plate thickness is ⁄16 in. [5 mm].
3.2 In addition to the basic requirements of this
1.5 These alloy steel plates in the as-rolled condition are
specification, certain supplementary requirements are available
sensitive to cracking during flame cutting, transit, and han-
when additional control, testing, or examination is required to
dling. They should be shipped in the as-rolled condition only
meet end use requirements. The purchaser is referred to the
with the mutual agreement of the manufacturer and the
listed supplementary requirements in this specification and to
purchaser or fabricator.
the detailed requirements in Specification A20/A20M.
3.3 If the requirements of this specification are in conflict
1.6 The values stated in either inch-pound units or SI units
are to be regarded separately as standard. Within the text, the with the requirements of Specification A20/A20M, the require-
ments of this specification shall prevail.
SI units are shown in brackets. The values stated in each
system are not exact equivalents; therefore, each system must
4. Manufacture
be used independently of the other. Combining values from the
4.1 Steelmaking Practice—The steel shall be killed and
two systems may result in nonconformance with the specifi-
shall conform to the fine austenitic grain size requirement of
cation.
Specification A20/A20M.
5. Heat Treatment
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This specification is under the jurisdiction of ASTM Committee A01 on Steel,
5.1 All plates shall be heat treated by heating to a suitable
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
austenitizing temperature, holding for a sufficient time period
A01.11 on Steel Plates for Boilers and Pressure Vessels.
Current edition approved March 1, 2014. Published March 2014. Originally
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approved in 1965. Last previous edition approved in 2009 as A543/A543M – 09. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
DOI: 10.1520/A0543_A0543M-09R14.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
2
For ASME Boiler and Pressure Vessel Code applications, see related Specifi-
Standards volume information, refer to the standard’s Document Summary page on
cation SA-543 in Section II of that Code.
the ASTM website.
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A543/A543M − 09 (2014)
TABLE 1 Chemical Requirements
to attain uniform temperature through the thickness and
quenching in a suitable liquid medium by spraying or immer- Composition, %
Element
Type B Type C
sion. The plates shall then be tempered to produce the required
A
Carbon, max 0.20 0.18
properties by heating to a suitable temperature not lower than
A
Manganese, max 0.40 0.40
1
1100°F [595°C] with a holding
...