ASTM A990/A990M-14
(Specification)Standard Specification for Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure Retaining Parts for Corrosive Service
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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Designation:A990/A990M −14
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.
1. Scope* 2. Referenced Documents
2
1.1 This specification covers iron-nickel-chromium and 2.1 ASTM Standards:
nickel alloy castings specially processed with restricted melt A351/A351M Specification for Castings, Austenitic, for
practices, weldability testing, and nondestructive examination Pressure-Containing Parts
(NDE) requirements. A488/A488M Practice for Steel Castings, Welding, Qualifi-
cations of Procedures and Personnel
1.2 Anumber of grades of iron-nickel-chromium and nickel
A494/A494M Specification for Castings, Nickel and Nickel
alloy castings are included in this specification. Since these
Alloy
grades possess varying degrees of suitability for service in
A703/A703M Specification for Steel Castings, General
corrosive environments, it is the responsibility of the purchaser
Requirements, for Pressure-Containing Parts
to determine which grade shall be furnished. Selection will
A743/A743M Specification for Castings, Iron-Chromium,
depend on design and service conditions, mechanical
Iron-Chromium-Nickel, Corrosion Resistant, for General
properties, and corrosion-resistant characteristics.
Application
1.3 The values stated in either SI units or inch-pound units
A744/A744M Specification for Castings, Iron-Chromium-
are to be regarded separately as standard. The values stated in
Nickel, Corrosion Resistant, for Severe Service
each system may not be exact equivalents; therefore, each
A802/A802M Practice for Steel Castings, Surface Accep-
system shall be used independently of the other. Combining
tance Standards, Visual Examination
values from the two systems may result in non-conformance
A903/A903M Specification for Steel Castings, Surface Ac-
with the standard.
ceptance Standards, Magnetic Particle and Liquid Pen-
1.3.1 This specification is expressed in both inch-pound
etrant Inspection
units and in SI units; however, unless the purchase order or
A985/A985M Specification for Steel Investment Castings
contract specifies the applicable M specification designation
General Requirements, for Pressure-Containing Parts
(SI units), the inch-pound units shall apply.Within the text, the
E94 Guide for Radiographic Examination
SI units are shown in brackets or parentheses.
E165 Practice for Liquid Penetrant Examination for General
1.4 This standard does not purport to address all of the Industry
1
safety concerns, if any, associated with its use. It is the
E186 Reference Radiographs for Heavy-Walled (2 to 4 ⁄2-in.
responsibility of the user of this standard to establish appro- (50.8 to 114-mm)) Steel Castings
priate safety and health practices and determine the applica-
E272 Reference Radiographs for High-Strength Copper-
bility of regulatory limitations prior to use. Base and Nickel-Copper Alloy Castings
1
E280 Reference Radiographs for Heavy-Walled (4 ⁄2 to 12-
in. (114 to 305-mm)) Steel Castings
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
2
A01.18 on Castings. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 1, 2014. Published June 2014. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1998. Last previous edition approved in 2011 as A990 – 11. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/A0990_A0990M-14. 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
1
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A990/A990M−14
E446 Reference Radiographs for Steel Castings Up to 2 in. 4.2 Investment Castings – Material furnished to this speci-
(50.8 mm) in Thickness fication shall conform to the requirements of Specification
3
A985/A985M, including any supplementary requirements that
2.2 AWS Standards:
are indicated in the purchase order. Failure to comply with the
AWS A5.4, Specification for Stainless Steel Electrodes for
general requirements of Specification A985/A985M consti-
Shielded Metal Arc Welding
tutes nonconformance with this specification. In case of con-
AWS A5.9, Specification for Bare Stainless Steel Welding
flict betwee
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: A990/A990M − 11 A990/A990M − 14
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 A990/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.
1
ε NOTE—This standard was converted to a dual designation in February 2013.
1. 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A351/A351M Specification for Castings, Austenitic, for Pressure-Containing Parts
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A488/A488M Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel
A494/A494M Specification for Castings, Nickel and Nickel Alloy
A703/A703M Specification for Steel Castings, General Requirements, for Pressure-Containing Parts
A743/A743M Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
A744/A744M Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
A802/A802M Practice for Steel Castings, Surface Acceptance Standards, Visual Examination
A903/A903M Specification for Steel Castings, Surface Acceptance Standards, Magnetic Particle and Liquid Penetrant
Inspection
A941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A985/A985M Specification for Steel Investment Castings General Requirements, for Pressure-Containing Parts
E94 Guide for Radiographic Examination
E165 Practice for Liquid Penetrant Examination for General Industry
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.
Current edition approved May 1, 2011May 1, 2014. Published June 2011June 2014. Originally approved in 1998. Last previous edition approved in 20102011 as
A990 – 10a.A990 – 11. DOI: 10.1520/A0990_A0990M-11E01.10.1520/A0990_A0990M-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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.
*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
1
---------------------- Page: 1 ----------------------
A990/A990M − 14
1
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
1
E280 Reference Radiographs for Heavy-Walled (4 ⁄2 to 12-in. (114 to 305-mm)) Steel Castings
E446 Reference Radiogr
...
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