ASTM A1017/A1017M-07
(Specification)Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum-Tungsten
Standard Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum-Tungsten
ABSTRACT
This specification covers chromium-molybdenum-tungsten alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service. The plates shall be available in three grades, namely Grades 23, 911, and 122, having different alloy contents. The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical requirements. The steel shall be killed and the plates shall undergo heat treatment. In order to determine mechanical properties such as yield strength and elongation, the plates shall be subjected to tension and hardness tests.
SCOPE
1.1 This specification covers Chromium-Molybdenum-Tungsten 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 three grades having different alloy contents as follows:
1.3 The maximum thickness of plates is limited only by the capacity of the composition to meet the specified mechanical property requirements.
1.4 The specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable "M" specification designation (SI units), the material shall be furnished to inch-pound units.
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.
General Information
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Standards Content (Sample)
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Designation: A1017/A1017M – 07
Standard Specification for
Pressure Vessel Plates, Alloy Steel, Chromium-
1
Molybdenum-Tungsten
This standard is issued under the fixed designation A1017/A1017M; 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* A435/A435M Specification for Straight-Beam Ultrasonic
Examination of Steel Plates
1.1 This specification covers Chromium-Molybdenum-
A577/A577M Specification for UltrasonicAngle-Beam Ex-
Tungsten alloy steel plates intended primarily for welded
amination of Steel Plates
boilers and pressure vessels designed for elevated temperature
service.
3. General Requirements
1.2 Plates are available under this specification in three
3.1 Material supplied to this material specification shall
grades having different alloy contents as follows:
conform to Specification A20/A20M. Such requirements out-
Nominal Nominal Nominal
line the testing and retesting methods and procedures, permis-
Chromium Molybdenum Tungsten
Grade Content, % Content, % Content, %
sible variations in dimensions and weight [mass], quality and
repair of defects, marking, loading, and so forth.
23 2.25 0.20 1.60
3.2 Specification A20/A20M also establishes the rules for
911 9.00 1.00 1.00
122 12.00 0.40 2.00
the ordering information that should be complied with when
purchasing material to this specification.
1.3 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
1.4 The specification is expressed in both inch-pound units
end use requirements. The purchaser is referred to the listed
and in SI units. However, unless the order specifies the
supplementary requirements in this specification and to the
applicable “M” specification designation (SI units), the mate-
detailed requirements in Specification A20/A20M.
rial shall be furnished to inch-pound units.
3.4 If the requirements of this specification are in conflict
1.5 The values stated in either inch-pound units or SI units
with the requirements of SpecificationA20/A20M, the require-
are to be regarded separately as standard. Within the text, the
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. Materials and Manufacture
be used independently of the other.
4.1 Steelmaking Practice—The steel shall be killed.
2. Referenced Documents
5. Heat Treatment
2
2.1 ASTM Standards:
5.1 Except as allowed by 5.2 and 5.3, all plates shall be
A20/A20M Specification for General Requirements for
normalized at 1900 to 1975°F [1040 to 1080°C]. Plates for
Steel Plates for Pressure Vessels
Grades 23 and 122 shall be tempered at 1350 to 1470°F [730
to 800°C]. Grade 911 plates shall be tempered at 1365 to
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
1435°F [740 to 780°C].
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
5.2 If permitted by the purchaser, plates for Grades 23 and
A01.11 on Steel Plates for Boilers and Pressure Vessels.
122 may be austenitized at 1900 to 1975°F [1040 to 1080°C],
Current edition approved March 1, 2007. Published March 2007. Originally
approved in 2001. Last previous edition approved in 2006 asA1017/A1017M – 06.
subjected to accelerated cooling from the austenitizing tem-
DOI: 10.1520/A1017_A1017M-07.
perature by air blasting or liquid quenching, and then tempered
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
at 1350 to 1470°F [730 to 800°C].
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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A1017/A1017M – 07
TABLE 1 Chemical Requirements TABLE 2 Tensile Requirements
Grade 23 Grade 911 Grade 122
NOTE—Where“.” appears in this table there is no requirement.
Tensile Strength, ksi [MPa] 74 to 100 90 to 120
Element Composition %
[510 to 690] [620 to 840] 90 [620] min.
Grade 23 Grade 911 Grade 122
Yield Strength ksi [MPa] min 58 [400] 64 [440] 58 [400]
Carbon
Elongation in 2 in. % min 20 18 20
Heat Analysis 0.04–0.10 0.09–0.13 0.07–0.14
...
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