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

ABSTRACT
This specification covers iron-nickel-chromium and nickel alloy castings specially processed with restricted melt practices, weldability testing, and nondestructive examination (NDE) requirements for use in pressure retaining parts with corrosive service environments. The choice of manufacturing procedure to be used for producing the alloy castings shall be according to specified metallic contents. Materials shall conform to specified chemical composition and tensile property requirements, and weldability qualifications. Nondestructive examination requirements such as casting thickness shall be evaluated by visual, radiographic, and liquid penetrant inspection. Castings shall be repair welded and solution heat treated prior to final cleaning by blasting, and shall not be peened, plugged, or impregnated.
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 grades 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 SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.3.1 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M specification designation (SI units), the inch-pound units shall apply. Within the text, the SI units are shown in brackets or parentheses.  
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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30-Apr-2011
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ASTM A990/A990M-11e01 - Standard Specification for Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure Retaining Parts for Corrosive Service
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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
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Designation:A990/A990M −11
StandardSpecification 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 designationA990/A990M; 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.
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ε NOTE—This standard was converted to a dual designation in February 2013.
1. Scope* 2. Referenced Documents
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2.1 ASTM Standards:
1.1 This specification covers iron-nickel-chromium and
A351/A351M Specification for Castings, Austenitic, for
nickel alloy castings specially processed with restricted melt
Pressure-Containing Parts
practices, weldability testing, and nondestructive examination
A370 Test Methods and Definitions for Mechanical Testing
(NDE) requirements.
of Steel Products
1.2 Anumber of grades of iron-nickel-chromium and nickel
A488/A488M Practice for Steel Castings, Welding, Qualifi-
alloy castings are included in this specification. Since these
cations of Procedures and Personnel
grades possess varying degrees of suitability for service in
A494/A494M Specification for Castings, Nickel and Nickel
corrosive environments, it is the responsibility of the purchaser
Alloy
to determine which grade shall be furnished. Selection will
A703/A703M Specification for Steel Castings, General
depend on design and service conditions, mechanical
Requirements, for Pressure-Containing Parts
properties, and corrosion-resistant characteristics.
A743/A743M Specification for Castings, Iron-Chromium,
Iron-Chromium-Nickel, Corrosion Resistant, for General
1.3 The values stated in either SI units or inch-pound units
Application
are to be regarded separately as standard. The values stated in
A744/A744M Specification for Castings, Iron-Chromium-
each system may not be exact equivalents; therefore, each
Nickel, Corrosion Resistant, for Severe Service
system shall be used independently of the other. Combining
A802/A802M Practice for Steel Castings, Surface Accep-
values from the two systems may result in non-conformance
tance Standards, Visual Examination
with the standard.
A903/A903M Specification for Steel Castings, Surface Ac-
1.3.1 This specification is expressed in both inch-pound
ceptance Standards, Magnetic Particle and Liquid Pen-
units and in SI units; however, unless the purchase order or
etrant Inspection
contract specifies the applicable M specification designation
A941 TerminologyRelatingtoSteel,StainlessSteel,Related
(SI units), the inch-pound units shall apply.Within the text, the
Alloys, and Ferroalloys
SI units are shown in brackets or parentheses.
A985/A985M Specification for Steel Investment Castings
1.4 This standard does not purport to address all of the General Requirements, for Pressure-Containing Parts
E94 Guide for Radiographic Examination
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- E165 Practice for Liquid Penetrant Examination for General
Industry
priate safety and health practices and determine the applica-
1
bility of regulatory limitations prior to use. E186 Reference Radiographs for Heavy-Walled (2 to 4 ⁄2-in.
(50.8 to 114-mm)) Steel Castings
E272 Reference Radiographs for High-Strength Copper-
Base and Nickel-Copper Alloy Castings
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This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
2
A01.18 on Castings. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2011. Published June 2011. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1998. Last previous edition approved in 2010 as A990 – 10a. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/A0990_A0990M-11E01. the ASTM website.
*A Summary 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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A990/A990M−11
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E280 Reference Radiographs for Heavy-Walled (4 ⁄2 to 12- A703M constitutes nonconformance with this specification. In
in. (114 to 305-mm)) Steel Castings case of conflict between the requirements of this specification
E446 Reference Radiographs for Steel Castings Up to 2 in. and Specification A703/A703M, this specification shall pre-
(50.8 mm) in Thickness vail.
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2.2 AWS Standards:
4.2 Investment Castings – Material furnished to this speci-
AWS A5.4, Specification f
...

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