ASTM A494/A494M-08

Standard Specification for Castings, Nickel and Nickel Alloy

ABSTRACT
This specification covers nickel, nickel-copper, nickel-copper-silicon, nickel-molybdenum, nickel-chromium, and nickel-molybdenum-chromium alloy castings for corrosion resistant service. The castings shall be heat treated. When Class 1 is specified, grades CY40 and M25S shall be supplied in the as-cast condition. When Class 2 is specified, grades CY40 and M25S shall be supplied in the solution treated condition. When Class 3 is specified, grade M25S shall be supplied in the age-hardened condition. The chemical composition requirements of the alloys are presented. The tensile property requirements including the heat treatment procedure for the castings are presented in detail. It is required that one tension test shall be made from each master heat except for grades M25S and CY5SnBiM when the master heat is used to pour the castings. One tension test shall be made from each melt except for grades M25S and CY5SnBiM. Test results shall conform to the specified tensile requirements.
SCOPE
1.1 This specification covers nickel, nickel-copper, nickel-copper-silicon, nickel-molybdenum, nickel-chromium, and nickel-molybdenum-chromium alloy castings for corrosion-resistant service.  
1.2 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.

General Information

• Status: Historical
• Publication Date: 30-Sep-2008
• ICS: 77.150.40 - Nickel and chromium products
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.18 - Castings

Relations

• Replaces: ASTM A494/A494M-07 - Standard Specification for Castings, Nickel and Nickel Alloy
• Effective Date: 01-Oct-2008
• Replaced By: ASTM A494/A494M-09 - Standard Specification for Castings, Nickel and Nickel Alloy
• Effective Date: 01-May-2009
• Referred By: ASTM A781/A781M-21 - Standard Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
• Effective Date: 01-Oct-2008
• Referred By: ASTM F1511-18(2023) - Standard Specification for Mechanical Seals for Shipboard Pump Applications
• Effective Date: 01-Oct-2008
• Referred By: ASTM F998-12(2022) - Standard Specification for Centrifugal Pump, Shipboard Use
• Effective Date: 01-Oct-2008
• Referred By: ASTM A990/A990M-21 - Standard Specification for Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure-Retaining Parts for Corrosive Service
• Effective Date: 01-Oct-2008
• Referred By: ASTM F1508-96(2021) - Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas, and Liquid Services
• Effective Date: 01-Oct-2008
• Referred By: ASTM A743/A743M-21 - Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
• Effective Date: 01-Oct-2008
• Referred By: ASTM A488/A488M-18e2 - Standard Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel
• Effective Date: 01-Oct-2008
• Referred By: ASTM A957/A957M-21 - Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
• Effective Date: 01-Oct-2008
• Referred By: ASTM A744/A744M-21a - Standard Specification for Castings, Iron-Chromium-Nickel, Corrosion Resistant, for Severe Service
• Effective Date: 01-Oct-2008

Standards Content (Sample)

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
Designation: A 494/A 494M – 08
Standard Specification for
1
Castings, Nickel and Nickel Alloy
This standard is issued under the fixed designationA 494/A 494M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* E76 Test Methods for ChemicalAnalysis of Nickel-Copper
3
Alloys
1.1 This specification covers nickel, nickel-copper, nickel-
E 354 Test Methods for Chemical Analysis of High-
copper-silicon, nickel-molybdenum, nickel-chromium, and
Temperature, Electrical, Magnetic, and Other Similar Iron,
nickel-molybdenum-chromium alloy castings for corrosion-
Nickel, and Cobalt Alloys
resistant service.
1.2 The values stated in either SI units or inch-pound units
3. Terminology
are to be regarded separately as standard. The values stated in
3.1 Definitions:
each system may not be exact equivalents; therefore, each
3.1.1 master heat—a single furnace charge of refined alloy,
system shall be used independently of the other. Combining
whichmayeitherbepoureddirectlyintocastingsorintoremelt
values from the two systems may result in non-conformance
alloy for individual melts.
with the standard.
3.1.2 melts—a single furnace charge poured into castings.
2. Referenced Documents When master heats are used to prepare melts, a melt analysis
2
shall be reported.
2.1 ASTM Standards:
A 370 Test Methods and Definitions for MechanicalTesting
4. General Conditions for Delivery
of Steel Products
4.1 Material furnished to this specification shall conform to
A 488/A 488M Practice for Steel Castings, Welding, Quali-
the requirements of Specification A 781/A 781M, including
fications of Procedures and Personnel
any supplementary requirements that are indicated in the
A 732/A 732M Specification for Castings, Investment, Car-
purchase order. Failure to comply with the general require-
bon and Low Alloy Steel for General Application, and
ments of Specification A 781/A 781M constitutes nonconfor-
Cobalt Alloy for High Strength at Elevated Temperatures
mance with this specification. In case of conflict between the
A 781/A 781M Specification for Castings, Steel and Alloy,
requirements of this specification and Specification A 781/
Common Requirements, for General Industrial Use
A 781M, this specification shall prevail.
E8 Test Methods for Tension Testing of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to
5. Ordering Information
Determine Conformance with Specifications
5.1 Orders for castings to this specification should include
E30 Test Methods for Chemical Analysis of Steel, Cast
the following information:
3
Iron, Open-Hearth Iron, and Wrought Iron
5.1.1 Quantity, in pieces, and
E38 Methods for Chemical Analysis of Nickel-Chromium
5.1.2 Grade designation (Table 1) and class (Table 2).
3
and Nickel-Chromium-Iron Alloys
5.2 The purchaser shall specify any of the following infor-
mation required to describe adequately the desired material:
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
5.2.1 Heat-treat condition (see 6.1 and 6.2),
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
5.2.2 Repair welding (see Section 11)
A01.18 on Castings.
5.2.3 Source inspection requirements, if any (see Specifica-
Current edition approved Oct. 1, 2008. Published November 2008. Originally
approved in 1963. Last previous edition approved in 2007 as A 494/A 494M – 07. tion A 781/A 781M),
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.2.4 Marking-for-identification requirements, if any (see
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
13.1), and
Standards volume information, refer to the standard’s Document Summary page on
5.2.5 Supplementary requirements desired, including the
the ASTM website.
3
Withdrawn. The last approved version of this historical standard is referenced
standards of acceptance.
on www.astm.org.
*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 ----------------------
A 494/A 494M – 08
2
TABLE 1 Chemical Requirements
NOTE—Values are maximum unless otherwise indicated.
Alloy Ni Ni-Cu Ni-Mo Ni-Cr Other
Family
A A
Grade CZ100 M25S M30C M30H M35-1 M35-2 N3M N7M N12MV CU5MCuC CW2M CW6M CW6MC CW12MW CX2M CX2MW CY40 CY5SnBiM
UNS N02100 N24025 N24130 N24030 N24135 N24020 J30003 J30007 N30012 N08826 N26455 N30107 N26625 N30002 N260022 N26059 N06040 N26055
Numbers
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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.
Designation:A494/A494M–07 Designation: A 494/A 494M – 08
Standard Specification for
1
Castings, Nickel and Nickel Alloy
This standard is issued under the fixed designationA 494/A 494M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1 This specification covers nickel, nickel-copper, nickel-copper-silicon, nickel-molybdenum, nickel-chromium, and nickel-
molybdenum-chromium alloy castings for corrosion-resistant service.
1.2The 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.
Inch-pound units are applicable for material ordered to Specification A494 and SI units for material ordered to Specification
A494M.
1.2 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 488/A 488M Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel
A 732/A 732M Specification for Castings, Investment, Carbon and LowAlloy Steel for GeneralApplication, and CobaltAlloy
for High Strength at Elevated Temperatures
A 781/A 781M Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
E 8 Test Methods for Tension Testing of Metallic Materials
E 29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
3
E 30 Test Methods for Chemical Analysis of Steel, Cast Iron, Open-Hearth Iron, and Wrought Iron
3
E 38 Methods for Chemical Analysis of Nickel-Chromium and Nickel-Chromium-Iron Alloys
3
E 76 Test Methods for Chemical Analysis of Nickel-Copper Alloys
E 354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and
Cobalt Alloys
3. Terminology
3.1 Definitions:
3.1.1 master heat—a single furnace charge of refined alloy, which may either be poured directly into castings or into remelt
alloy for individual melts.
3.1.2 melts—a single furnace charge poured into castings. When master heats are used to prepare melts, a melt analysis shall
be reported.
4. General Conditions for Delivery
4.1 Material furnished to this specification shall conform to the requirements of Specification A 781/A 781M, including any
supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirements of
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.18
on Castings.
Current edition approved MayOct. 1, 2007.2008. Published May 2007.November 2008. Originally approved in 1963. Last previous edition approved in 20052007 as
A 494/A 494M – 057.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Withdrawn.
3
Withdrawn. The last approved version of this historical standard is referenced on www.astm.org.
*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 ----------------------
A 494/A 494M – 08
Specification A 781/A 781M constitutes nonconformance with this specification. In case of conflict between the requirements of
this specification and Specification A 781/A 781M, this specification shall prevail.
5. Ordering Information
5.1 Orders for castings to this specification should include the following information:
5.1.1 Quantity, in pieces, and
5.1.2 Grade designation (Table 1
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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.
Designation:A 494/A 494M–07 Designation: A 494/A 494M – 08
Standard Specification for
1
Castings, Nickel and Nickel Alloy
This standard is issued under the fixed designationA 494/A 494M; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1 This specification covers nickel, nickel-copper, nickel-copper-silicon, nickel-molybdenum, nickel-chromium, and nickel-
molybdenum-chromium alloy castings for corrosion-resistant service.
1.2The 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.
Inch-pound units are applicable for material ordered to Specification A 494 and SI units for material ordered to Specification A
494M.
1.2 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A488/A488M Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel
A732/A732M Specification for Castings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy
for High Strength at Elevated Temperatures
A781/A781M Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
E8 Test Methods for Tension Testing of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
3
E30 Test Methods for Chemical Analysis of Steel, Cast Iron, Open-Hearth Iron, and Wrought Iron
3
E38 Methods for Chemical Analysis of Nickel-Chromium and Nickel-Chromium-Iron Alloys
3
E76 Test Methods for Chemical Analysis of Nickel-Copper Alloys
E354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and
Cobalt Alloys
3. Terminology
3.1 Definitions:
3.1.1 master heat—a single furnace charge of refined alloy, which may either be poured directly into castings or into remelt
alloy for individual melts.
3.1.2 melts—a single furnace charge poured into castings. When master heats are used to prepare melts, a melt analysis shall
be reported.
4. General Conditions for Delivery
4.1 Material furnished to this specification shall conform to the requirements of Specification A 781/A 781MA781/A781M,
includinganysupplementaryrequirementsthatareindicatedinthepurchaseorder.Failuretocomplywiththegeneralrequirements
1
This specification is under the jurisdiction ofASTM CommitteeA01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of SubcommitteeA01.18
on Castings.
Current edition approved MayOct. 1, 2007.2008. Published May 2007.November 2008. Originally approved in 1963. Last previous edition approved in 20052007 as
A 494/A 494M – 057.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Withdrawn.
3
Withdrawn. The last approved version of this historical standard is referenced on www.astm.org.
*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 ----------------------
A 494/A 494M – 08
of Specification A 781/A 781MA781/A781M constitutes nonconformance with this specification. In case of conflict between the
requirements of this specification and Specification A 781/A 781MA781/A781M, this specification shall prevail.
5. Ordering Information
5.1 Orders for castings to this specification should include the following information:
5.1.1 Quantity, in pieces, and
5.1.2 Grade designation (
...