ASTM A297/A297M-08a
(Specification)Standard Specification for Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application
Standard Specification for Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application
ABSTRACT
This specification covers standards for iron-chromium and iron-chromium-nickel alloy castings of general purpose grades (Grades HF, HH, HI, HK, HE, HT, HU, HW, HX, HC, HD, HL, HN, and HN) applicable in heat-resistant services. Alloys shall be produced through electric arc, electric-induction, or other approved processes. Heat-treatment shall be conducted when agreed upon by the manufacturer and purchaser. The material shall conform to carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, and molybdenum contents. Tensile requirements including tensile strength, yield point, and elongation shall apply when specified in the purchase order. Guidelines for repair by welding are also given.
SCOPE
1.1 This specification covers iron-chromium and iron-chromium-nickel alloy castings for heat-resistant service. The grades covered by this specification are general purpose alloys and no attempt has been made to include heat-resisting alloys used for special production application.
Note 1—For heat-resisting alloys used for special product application, reference should be made to Specification A 351/A 351M, A 217/A 217M, and A 447/A 447M.
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.
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Designation: A297/A297M – 08a
Standard Specification for
Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,
1
Heat Resistant, for General Application
This standard is issued under the fixed designationA297/A297M; 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* A447/A447M Specification for Steel Castings, Chromium-
Nickel-Iron Alloy (25-12 Class), for High-Temperature
1.1 This specification covers iron-chromium and iron-
Service
chromium-nickel alloy castings for heat-resistant service. The
A781/A781M Specification for Castings, Steel and Alloy,
grades covered by this specification are general purpose alloys
Common Requirements, for General Industrial Use
and no attempt has been made to include heat-resisting alloys
A957 Specification for Investment Castings, Steel and Al-
used for special production application.
loy, Common Requirements, for General Industrial Use
NOTE 1—For heat-resisting alloys used for special product application,
reference should be made to Specification A351/A351M, A217/A217M,
3. General Conditions for Delivery
and A447/A447M.
3.1 Except for investment castings, material furnished to
1.2 The values stated in either SI units or inch-pound units
this specification shall conform to the requirements of Speci-
are to be regarded separately as standard. The values stated in
fication A781/A781M, including any supplementary require-
each system may not be exact equivalents; therefore, each
ments that are indicated in the purchase order. Failure to
system shall be used independently of the other. Combining
comply with the general requirements of Specification A781/
values from the two systems may result in non-conformance
A781M constitutes nonconformance with this specification. In
with the standard.
case of conflict between the requirements of this specification
and Specification A781/A781M, this specification shall pre-
2. Referenced Documents
vail.
2
2.1 ASTM Standards:
3.2 Investment castings furnished to this specification shall
A217/A217M Specification for Steel Castings, Martensitic
conform to the requirements of Specification A957, including
Stainless and Alloy, for Pressure-Containing Parts, Suit-
any supplementary requirements that are indicated in the
able for High-Temperature Service
purchase order. Failure to comply with the general require-
A351/A351M Specification for Castings, Austenitic, for
ments of Specification A957 constitutes nonconformance with
Pressure-Containing Parts
this specification. In case of conflict between the requirements
A370 Test Methods and Definitions for Mechanical Testing
of this specification and Specification A957, Specification
of Steel Products
A957 shall prevail.
4. Ordering Information
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
4.1 The inquiry and order should include or indicate the
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.18 on Castings.
following:
Current edition approved Nov. 1, 2008. Published December 2008. Originally
4.1.1 A description of the casting by pattern number or
approved in 1946. Last previous edition approved in 2008 as A297/A297M – 08.
drawing (dimensional tolerances shall be included on the
DOI: 10.1520/A0297_A0297M-08A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or casting drawing),
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4.1.2 Grade of steel,
Standards volume information, refer to the standard’s Document Summary page on
4.1.3 Options in the specification, and
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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A297/A297M – 08a
4.1.4 The supplementary requirements desired including the casting. For Grade HG10MNN, the filler metal to be used shall
standards of acceptance. be established by mutual agreement between the manufacturer
and the purchaser. All weld repairs shall be subjected to the
5. Process
same inspection standards as the casting.
5.1 Alloys shall be made by the following processes: 8.2 Castings with major weld repairs shall be heat treated in
electric-arc, electric-induction, or other approved processes.
TABLE 1 Chemical Requirements
Composition, % (max, except where range is given)
Grade Type
A B
Carbon Manganese Silicon Phosphorus Sulfur Chromium Nickel Molybdenum Other
HF 19 Chromium, 0.20–0.40 2.00 2.00 0.04 0.04 18.0–23.0 8.0–12.0 0.50
9 Nickel
HH 25 Chromium, 0.20
...
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 297/A 297M–08 Designation: A 297/A 297M – 08a
Standard Specification for
Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,
1
Heat Resistant, for General Application
This standard is issued under the fixed designationA297/A297M; 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.
Note—Table S9.1 was corrected editorially and the year date changed on May 6, 2008.
1. Scope*
1.1 This specification covers iron-chromium and iron-chromium-nickel alloy castings for heat-resistant service. The grades
covered by this specification are general purpose alloys and no attempt has been made to include heat-resisting alloys used for
special production application.
NOTE 1—For heat-resisting alloys used for special product application, reference should be made to SpecificationA 351/A 351M,A 217/A 217M, and
A 447/A 447M.
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 217/A 217M Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for
High-Temperature Service
A 351/A 351M Specification for Castings, Austenitic, for Pressure-Containing Parts
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 447/A 447M Specification for Steel Castings, Chromium-Nickel-Iron Alloy (25-12 Class), for High-Temperature Service
A 781/A 781M Specification for Castings, Steel and Alloy, Common Requirements, for General Industrial Use
A 957 Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
3. General Conditions for Delivery
3.1 Except for investment castings, 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 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.
3.2 Investment castings furnished to this specification shall conform to the requirements of SpecificationA 957, including any
supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirements of
Specification A 957 constitutes nonconformance with this specification. In case of conflict between the requirements of this
specification and Specification A 957, Specification A 957 shall prevail.
4. Ordering Information
4.1 The inquiry and order should include or indicate the following:
4.1.1 A description of the casting by pattern number or drawing (dimensional tolerances shall be included on the casting
drawing),
4.1.2 Grade of steel,
4.1.3 Options in the specification, and
4.1.4 The supplementary requirements desired including the standards of acceptance.
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 May 6,Nov. 1, 2008. Published MayDecember 2008. Originally approved in 1946. Last previous edition approved in 20072008 as
A 297/A 297M – 078.
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.
1
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A 297/A 297M – 08a
5. Process
5.1 Alloys shall be made by the following processes: electric-arc, electric-induction, or other approved processes.
6. Heat Treatment
6.1 Castings for heat-resistant service may be shipped in the as-cast condition without heat treatment. If heat treatment is
required, the treatment shall be es
...
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