Standard Specification for Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure Retaining Parts for Corrosion Service

SCOPE
1.1 This specification covers iron-nickel-chromium and nickel alloy castings specially processed with restricted melt practices, weldability testing and nondestructive examination (NDE) requirements.
1.2 A number of grade of iron-nickel-chromium and nickel alloy castings are included in this specification. Since these grades possess varying degrees of suitability for service 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 corrosion-resistant characteristics.
1.3 The values stated in either inch-pound units or SI units are to be regarded separately as the standard. Within the text, the SI units are shown in parentheses. The value 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 this specification.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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09-Sep-2000
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ASTM A990-00 - Standard Specification for Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure Retaining Parts for Corrosion Service
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A 990 – 00 An American National Standard
Standard Specification for
Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially
Controlled for Pressure Retaining Parts for Corrosive
1
Service
This standard is issued under the fixed designation A 990; 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 A 494/A 494M Specification for Castings, Nickel and
2
Nickel Alloy
1.1 This specification covers iron-nickel-chromium and
A 703/A 703M Specification for Steel Castings, General
nickel alloy castings specially processed with restricted melt
2
Requirements, for Pressure-Containing Parts
practices, weldability testing and nondestructive examination
A 743/A 743M Specification for Castings, Iron-Chromium,
(NDE) requirements.
Iron-Chromium-Nickel, Corrosion Resistant, for General
1.2 A number of grades of iron-nickel-chromium and nickel
2
Application
alloy castings are included in this specification. Since these
A 744/A 744M Specification for Castings, Iron-
grades possess varying degrees of suitability for service in
Chromium-Nickel, Corrosion-Resistant, for Severe Ser-
corrosive environments, it is the responsibility of the purchaser
2
vice
to determine which grade shall be furnished. Selection will
A 802/A 802M Practice for Steel Castings, Surface Accep-
depend on design and service conditions, mechanical proper-
2
tance Standards, Visual Examination
ties, and corrosion-resistant characteristics.
A 903/A 903M Specification for Steel Castings, Surface
1.3 The values stated in either inch-pound units or SI units
Acceptance Standards, Magnetic Particle and Liquid Pen-
are to be regarded separately as the standard. Within the text,
2
etrant Inspection
the SI units are shown in parentheses. The values stated in each
2
A 919 Terminology Relating to Heat Treatment of Metals
system are not exact equivalents; therefore, each system must
3
E 94 Guide for Radiographic Testing
be used independently of the other. Combining values from the
3
E 165 Test Method for Liquid Penetrant Examination
two systems may result in nonconformance with this specifi-
1
E 186 Reference Radiographs for Heavy-Walled (2 to 4 ⁄2-
cation.
3
in. (51 to 114-mm)) Steel Castings
1.4 This standard does not purport to address all of the
E 272 Reference Radiographs for High-Strength Copper-
safety concerns, if any, associated with its use. It is the
3
Base and Nickel-Copper Alloy Castings
responsibility of the user of this standard to establish appro-
1
E 280 Reference Radiographs for Heavy-Walled (4 ⁄2 to
priate safety and health practices and determine the applica-
3
12-in. (114 to 305-mm)) Steel Castings
bility of regulatory limitations prior to use.
E 446 Reference Radiographs for Steel Castings Up to 2 in.
3
2. Referenced Documents
(51 mm) in Thickness
4
2.2 AWS Standards:
2.1 ASTM Standards:
AWS A5.4, Specification for Stainless Steel Electrodes for
A 351/A 351M Specification for Castings, Austenitic,
Shielded Metal Arc Welding
Austenitic-Ferritic (Duplex), for Pressure-Containing
2
AWS A5.9, Specification for Bare Stainless Steel Welding
Parts
Electrodes and Rods
A 370 Test Methods and Definitions for Mechanical Testing
2
AWS A5.11, Specification for Nickel and Nickel Alloy
of Steel Products
Electrodes for Shielded Metal Arc Welding
A 488/A 488M Practice for Steel Castings, Welding, Quali-
2
AWS A5.14, Specification for Nickel and Nickel Alloy Bare
fication of Procedures and Personnel
Welding Electrodes and Rods
5
2.3 ASME/ANSI Standard:
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
3
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee Annual Book of ASTM Standards, Vol 03.03.
4
A01.18 on Castings. Available from the American Welding Society, 2501 NW, 7th Street, Miami, FL
Current edition approved September 10, 2000. Published October 2000. Origi- 33125.
5
nally published as A 990–98. Last previous edition A 990–98. Available from the American Society of Mechanical Engineers, United Engi-
2
Annual Book of ASTM Standards, Vol 01.02. neering Center, 345 East 47th Street, New York, NY 10017.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
A 990
ASME/ANSI B16.34, Valves-Flanged, Threaded, and 6. Process and Manufacture
Welding End
6.1 Alloys shall be made by one of the two following
processes:
3. Terminology
6.1.1 Electric arc or induction furnace melting followed by
3.1 Definitions— The definitions in Test Methods and Defi-
AOD or VOD refining, or
nitions A 370 and Terminology
...

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