ASTM A747/A747M-07
(Specification)Standard Specification for Steel Castings, Stainless, Precipitation Hardening
Standard Specification for Steel Castings, Stainless, Precipitation Hardening
ABSTRACT
This specification covers iron-chromium-nickel-copper corrosion resistance steel castings capable of being strengthened by precipitation hardening heat treatment. The steel shall be made by electric furnace process with or without separate refining such as argon-oxygen decarburization. The steel materials shall also undergo homogenization heat treatment, solution annealing heat treatment, precipitation hardening and shall conform to the required values of temperature and time and cooling treatment. The materials shall conform to the required chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, chromium, nickel, copper, columbium, and nitrogen.
SCOPE
1.1 This specification covers iron-chromium-nickel-copper corrosion-resistant steel castings, capable of being strengthened by precipitation hardening heat treatment.
1.2 These castings may be used in services requiring corrosion resistance and high strengths at temperatures up to 600°F [315°C]. They may be machined in the solution-annealed condition and subsequently precipitation hardened to the desired high-strength mechanical properties specified in Table 1 with little danger of cracking or distortion.
1.3 The material is not intended for use in the solution-annealed condition. Note 1 - If the service environment in which the material is to be used is considered conducive to stress-corrosion cracking, precipitation hardening should be performed at a temperature that will minimize the susceptibility of the material to this type of attack.
1.4 Supplementary requirements of an optional nature are provided for use at the option of the purchaser. The Supplementary requirements shall apply only when specified individually by the purchaser in the purchase order or contract.
1.5 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. 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 may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
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Designation: A747/A747M – 07
Standard Specification for
1
Steel Castings, Stainless, Precipitation Hardening
This standard is issued under the fixed designationA747/A747M; 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* A781/A781M Specification for Castings, Steel and Alloy,
Common Requirements, for General Industrial Use
1.1 This specification covers iron-chromium-nickel-copper
A957/A957M Specification for Investment Castings, Steel
corrosion-resistant steel castings, capable of being strength-
and Alloy, Common Requirements, for General Industrial
ened by precipitation hardening heat treatment.
Use
1.2 These castings may be used in services requiring corro-
3
2.2 ASME Standard:
sion resistance and high strengths at temperatures up to 600°F
ASME Boiler and Pressure Vessel Code, Supplementary
[315°C]. They may be machined in the solution-annealed
Requirements S6, S14, and S27
condition and subsequently precipitation hardened to the de-
sired high-strength mechanical properties specified in Table
3. General Conditions for Delivery
S14.1 with little danger of cracking or distortion.
3.1 Except for investment castings, castings furnished to
1.3 The material is not intended for use in the solution-
this specification shall be in accordance with the requirements
annealed condition.
of Specification A781/A781M, including any supplementary
NOTE 1—If the service environment in which the material is to be used
requirements that are indicated in the purchase order. Failure to
is considered conducive to stress-corrosion cracking, precipitation hard-
comply with the general requirements of Specification A781/
ening should be performed at a temperature that will minimize the
A781M constitutes nonconformance with this specification. In
susceptibility of the material to this type of attack.
case of conflict between the requirements of this specification
1.4 Supplementary requirements of an optional nature are
and Specification A781/A781M, this specification shall pre-
provided for use at the option of the purchaser. The Supple-
vail.
mentary requirements shall apply only when specified indi-
3.2 Steel investment castings furnished to this specification
vidually by the purchaser in the purchase order or contract.
shall conform to the requirements of Specification A957/
1.5 This specification is expressed in both inch-pound units
A957M, including any supplementary requirements that are
and in SI units; however, unless the purchase order or contract
indicated in the purchase order. Failure to comply with the
specifies the applicable M specification designation (SI units),
generalrequirementsofSpecificationA957/A957Mconstitutes
the inch-pound units shall apply. The values stated in either
nonconformance with this specification. In case of conflict
inch-pound units or SI units are to be regarded separately as
between the requirements of this specification and Specifica-
standard. Within the text, the SI units are shown in brackets.
tion A957/A957M, A957/A957M shall prevail.
The values stated in each system may not be exact equivalents;
therefore,eachsystemshallbeusedindependentlyoftheother. 4. Ordering Information
Combining values from the two systems may result in noncon-
4.1 Orders for material to this specification should include
formance with the standard.
the following:
4.1.1 Quantity,
2. Referenced Documents
4.1.2 Specification designation and date of issue,
2
2.1 ASTM Standards:
4.1.3 Grade designation Table 1, and
A370 Test Methods and Definitions for Mechanical Testing
4.1.4 Description of casting by part, pattern, or drawing
of Steel Products
number. (Dimensional tolerances and machined surfaces
should be indicated on the casting drawing).
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
4.1.5 Heattreatmentcondition(SA,H900,andsoforth),see
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
5.2 and Table 2,
A01.18 on Castings.
4.1.6 Options in the specification, if any, in accordance with
CurrenteditionapprovedJune1,2007.PublishedJuly2007.Originallyapproved
5.2 and Section 7, and
in 1977. Last previous edition approved in 2004 as A747/A747M – 04. DOI:
10.1520/A0747_A0747M-07.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from American Society of Mechanical Engineers (ASME), ASME
Standards volume information, refer to the standard’s Document Summary page on International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
the ASTM website. ww
...
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.
Designation:A747/A747M–04 Designation: A 747/A 747M – 07
Standard Specification for
1
Steel Castings, Stainless, Precipitation Hardening
This standard is issued under the fixed designationA 747/A 747M; 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*
1.1 This specification covers iron-chromium-nickel-copper corrosion-resistant steel castings, capable of being strengthened by
precipitation hardening heat treatment.
1.2 These castings may be used in services requiring corrosion resistance and high strengths at temperatures up to 600°F
[315°C]. They may be machined in the solution-annealed condition and subsequently precipitation hardened to the desired
high-strength mechanical properties specified in Table S14.1 with little danger of cracking or distortion.
1.3 The material is not intended for use in the solution-annealed condition.
NOTE 1—If the service environment in which the material is to be used is considered conducive to stress-corrosion cracking, precipitation hardening
should be performed at a temperature that will minimize the susceptibility of the material to this type of attack.
1.4The 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.
1.4 Supplementary requirements of an optional nature are provided for use at the option of the purchaser. The Supplementary
requirements shall apply only when specified individually by the purchaser in the purchase order or contract.
1.5 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. 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 may not be exact equivalents; therefore, each system shall be used independently of the other.
Combining values from the two systems may result in nonconformance with the standard.
2. Referenced Documents
2
2.1 ASTM Standards:
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products A732/A732M Specification for Castings,
Investment, Carbon and Low Alloy Steel for
General Application, and Cobalt Alloy for
High Strength at Elevated Temperatures
A 781/A 781M Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
E38Methods for Chemical Analysis of Nickel-Chromium and Nickel-Chromium-Iron Alloys
E353Test Methods for Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron
Alloys Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
A 957/A 957M Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
3
2.2 ASME Standard:
ASME Boiler and Pressure Vessel Code, Supplementary Requirements S6, S14,and and S27
3. General Conditions for Delivery
3.1Material furnished to this specification shall be in accordance with the requirements of SpecificationA781/A781M, 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 Sept.June 1, 2004.2007. Published September 2004.July 2007. Originally approved in 1977. Last previous edition approved in 19992004 as
A747/A747M–99. A 747/A 747M – 04.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Withdrawn.
3
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
www.asme.org.
*A Summary of Ch
...
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.
Designation:A 747/A 747M–04 Designation: A747/A747M – 07
Standard Specification for
1
Steel Castings, Stainless, Precipitation Hardening
This standard is issued under the fixed designationA747/A747M; 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*
1.1 This specification covers iron-chromium-nickel-copper corrosion-resistant steel castings, capable of being strengthened by
precipitation hardening heat treatment.
1.2 These castings may be used in services requiring corrosion resistance and high strengths at temperatures up to 600°F
[315°C]. They may be machined in the solution-annealed condition and subsequently precipitation hardened to the desired
high-strength mechanical properties specified in Table S14.1 with little danger of cracking or distortion.
1.3 The material is not intended for use in the solution-annealed condition.
NOTE 1—If the service environment in which the material is to be used is considered conducive to stress-corrosion cracking, precipitation hardening
should be performed at a temperature that will minimize the susceptibility of the material to this type of attack.
1.4The 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.
1.4 Supplementary requirements of an optional nature are provided for use at the option of the purchaser. The Supplementary
requirements shall apply only when specified individually by the purchaser in the purchase order or contract.
1.5 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. 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 may not be exact equivalents; therefore, each system shall be used independently of the other.
Combining values from the two systems may result in nonconformance with the standard.
2. Referenced Documents
2
2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testing of Steel Products A732/A 732M 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 andAlloy, Common Requirements, for General Industrial Use E38Methods for
Chemical
Analysis of
Nickel-
Chromium
and Nickel-
Chromium-
Iron Alloys
E353Test Methods for Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron
Alloys
A957/A957M Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
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 Sept. 1, 2004. Published September 2004. Originally approved in 1977. Last previous edition approved in 1999 as A 747/A 747M–99.
Current edition approved June 1, 2007. Published July 2007. Originally approved in 1977. Last previous edition approved in 2004 as A747/A747M – 04. DOI:
10.1520/A0747_A0747M-07.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book ofASTM 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.
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A747/A747M – 07
3
2.2 ASME Standard:
ASME Boiler and Pressure Vessel Code, Supplementary Requirements S6, S14,and and S27
3. General Conditions for Delivery
3.1Material furnished to this specification shall be in accordance with the requirements of SpecificationA781A781/A781M/A
781M, including any
...
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