Standard Specification for Castings, Austenitic, Austenitic-Ferritic (Duplex), for Pressure-Containing Parts

SCOPE
1.1 This specification covers austenitic and austenitic-ferritic (duplex) steel castings for valves, flanges, fittings, and other pressure-containing parts (Note 1).
Note 1-Carbon steel castings for pressure-containing parts are covered by Specification A216/A216M, and low-alloy steel castings by Specification A217/A217M.
1.2 A number of grades of austenitic and austenitic-ferritic steel castings are included in this specification. Since these grades possess varying degrees of suitability for service at high temperatures or in corrosive environments, it is the responsibility of the purchaser to determine which grade shall be furnished. Selection will depend on design and service conditions, mechanical properties, and high-temperature or corrosion-resistant characteristics, or both.
1.2.1 Because of thermal instability, Grades CE20N, CF3MA, and CF8A are not recommended for service at temperatures above 800°F [425°C].
1.2.2 Because of embrittlement phases, Grade CD4MCu is not recommended for service at temperatures above 600°F [316°C].  
1.3 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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09-Sep-2000
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ASTM A351/A351M-00 - Standard Specification for Castings, Austenitic, Austenitic-Ferritic (Duplex), for Pressure-Containing Parts
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Used in USDOE-NE Standards
Designation: A 351/A 351M – 00
Standard Specification for
Castings, Austenitic, Austenitic-Ferritic (Duplex), for
1
Pressure-Containing Parts
This standard is issued under the fixed designation A 351/A 351M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope A 216/A 216M Specification for Steel Castings, Carbon,
2
Suitable for Fusion Welding, for High-Temperature Ser-
1.1 This specification covers austenitic and austenitic-
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vice
ferritic (duplex) steel castings for valves, flanges, fittings, and
A 217/A 217M Specification for Steel Castings, Martensi-
other pressure-containing parts (Note 1).
tic Stainless and Alloy, for Pressure-Containing Parts,
NOTE 1—Carbon steel castings for pressure-containing parts are cov- 3
Suitable for High-Temperature Service
ered by Specification A 216/A 216M, and low-alloy steel castings by
A 488/A 488M Practice for Steel Castings, Welding, Quali-
Specification A 217/A 217M.
3
fication of Procedures and Personnel
1.2 A number of grades of austenitic and austenitic-ferritic
A 703/A 703M Specification for Steel Castings, General
3
steel castings are included in this specification. Since these
Requirements, for Pressure-Containing Parts
grades possess varying degrees of suitability for service at high 4
E 165 Test Method for Liquid Penetrant Examination
4
temperatures or in corrosive environments, it is the responsi-
E 709 Guide for Magnetic Particle Examination
bility of the purchaser to determine which grade shall be
2.2 Manufacturers Standardization Society of the Valve and
furnished. Selection will depend on design and service condi-
Fittings Industry Standard:
tions, mechanical properties, and high-temperature or
SP-55 Quality Standard for Steel Castings for Valves,
corrosion-resistant characteristics, or both.
Flanges, and Fittings and Other Components (Visual
5
1.2.1 Because of thermal instability, Grades CE20N, CF3A,
Method)
CF3MA, and CF8A are not recommended for service at
temperatures above 800°F [425°C]. 3. General Conditions for Delivery
1.2.2 Because of embrittlement phases, Grade CD4MCu is
3.1 Material furnished to this specification shall conform to
not recommended for service at temperatures above 600°F
the requirements of Specification A 703/A 703M, including
[316°C].
any supplementary requirements that are indicated in the
1.3 The values stated in either inch-pound units or SI units
purchase order. Failure to comply with the general require-
are to be regarded separately as standard. Within the text, the
ments of Specification A 703/A 703M constitutes nonconfor-
SI units are shown in brackets. The values stated in each
mance with this specification. In case of conflict between the
system are not exact equivalents; therefore, each system must
requirements of this specification and Specification A 703/
be used independently of the other. Combining values from the
A 703M, this specification shall prevail.
two systems may result in nonconformance with the specifi-
3.2 The post weld heat treatment requirements of Supple-
cation.
mentary Requirement S11 may be specified when austenitic
castings other than HK, HT, or CT15C are to be subjected to
2. Referenced Documents
severe corrosive service.
2.1 ASTM Standards:
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
A01.18 on Castings.
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Current edition approved Sept. 10, 2000. Published October 2000. Originally Annual Book of ASTM Standards, Vol 01.02.
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published as A 351 – 52 T. Last previous edition A 351/A 351M-94a (1999). Annual Book of ASTM Standards, Vol 03.03.
2 5
For ASME Boiler and Pressure Vessel Code applications, see related Specifi- Available from Manufacturers’ Standardization Society of the Valve and
cation SA-351/SA-351M in Section II of that code. Fittings Industry, 1815 N. Fort Myer Drive, Arlington, VA 22209.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
A 351/A 351M – 00
4. Ordering Information 8. Tensile Properties
4.1 The inquiry and order should include or indicate the
8.1 Steel used for the castings shall conform to the require-
following:
ments as to tensile properties prescribed in
...

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