ASTM A732/A732M-05

Standard Specification for Castings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures

ABSTRACT
This specification covers carbon and low-alloy steel and cobalt alloy castings made by the investment casting process. Fifteen grades of steel and two cobalt alloy grades are covered. Steel castings shall be heat treated either by full annealing, normalizing, normalizing and tempering, or quenching and tempering to obtain the specified properties or other properties that have been agreed upon within each grade. The castings shall conform to the requirements for chemical composition specified.
SCOPE
1.1 This specification covers carbon and low-alloy steel and cobalt alloy castings made by the investment casting process.
1.2 Fifteen grades of steel and two cobalt alloy grades are covered.
1.3 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.
1.4 This specification is expressed in both inch-pound units and 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 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 this standard.

General Information

• Status: Historical
• Publication Date: 31-Dec-2004
• ICS: 77.140.80 - Iron and steel castings
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.18 - Castings

Relations

• Replaces: ASTM A732/A732M-02 - Standard Specification for Castings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
• Effective Date: 01-Jan-2005
• Replaced By: ASTM A732/A732M-09 - Standard Specification for Castings, Investment, Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
• Effective Date: 01-Apr-2009
• Referred By: ASTM A957/A957M-21 - Standard Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
• Effective Date: 01-Jan-2005
• Referred By: ASTM A536-84(2019)e1 - Standard Specification for Ductile Iron Castings
• Effective Date: 01-Jan-2005
• Referred By: ASTM A897/A897M-22 - Standard Specification for Austempered Ductile Iron Castings
• Effective Date: 01-Jan-2005
• Referred By: ASTM A395/A395M-99(2022) - Standard Specification for Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures
• Effective Date: 01-Jan-2005
• Referred By: ASTM A494/A494M-22 - Standard Specification for Castings, Nickel and Nickel Alloy
• Effective Date: 01-Jan-2005
• Referred By: ASTM A488/A488M-18e2 - Standard Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel
• Effective Date: 01-Jan-2005

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 732/A732M – 05
Standard Specification for
Castings, Investment, Carbon and Low Alloy Steel for
General Application, and Cobalt Alloy for High Strength at
1
Elevated Temperatures
This standard is issued under the fixed designationA732/A732M; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* of Metallic Materials
E 139 Practice for Conducting Creep, Creep-Rupture, and
1.1 This specification covers carbon and low-alloy steel and
Stress-Rupture Tests of Metallic Materials
cobalt alloy castings made by the investment casting process.
1.2 Fifteen grades of steel and two cobalt alloy grades are
3. Ordering Information
covered.
3.1 Orders for castings under this specification should
1.3 Supplementary requirements of an optional nature are
include the following information:
provided for use at the option of the purchaser. The supple-
3.1.1 Quantity,
mentary requirements shall apply only when specified indi-
3.1.2 ASTM designation and issue date,
vidually by the purchaser in the purchase order or contract.
3.1.3 Grade designation (Tables 1 and 2), and
1.4 This specification is expressed in both inch-pound units
3.1.4 Description of casting by part, pattern, or drawing
and SI units; however, unless the purchase order or contract
number. (Dimensional tolerances and machined surfaces shall
specifies the applicable M specification designation (SI units),
be indicated on the casting drawing.).
the inch-pound units shall apply. The values stated in either
3.2 The purchaser should specify any of the following
inch-pound units or SI units are to be regarded separately as
information to describe adequately the desired material:
standard. Within the text, the SI units are shown in brackets.
3.2.1 Heat-treat condition (see 5.1 and 5.2),
The values in each system may not be exact equivalents;
3.2.2 Repair welding (see Section 8 and Specification
therefore,eachsystemshallbeusedindependentlyoftheother.
A 957),
Combining values from the two systems may result in noncon-
3.2.3 Source inspection, if any (see Specification A 957),
formance with this standard.
and
2. Referenced Documents 3.2.4 Supplementary requirements required (marking, certi-
2 fication, mechanical properties, NDT, and the like).
2.1 ASTM Standards:
A 941 Terminology Relating to Steel, Stainless Steel, Re-
4. General Requirements
lated Alloys, and Ferroalloys
4.1 Material furnished to this specification shall conform to
A 957 Specification for Investment Castings, Steel and
the requirements of SpecificationA 957, including any supple-
Alloy, Common Requirements, for General Industrial Use
mentary requirements that are indicated on the purchase order.
A 994 Guide for Editorial Procedures and Form of Product
Failure to comply with the requirements of SpecificationA 957
SpecificationsforSteel,StainlessSteel,andRelatedAlloys
constitutes nonconformance with this specification. In case of
A 997 Practice for Investment Castings, Surface Accepted
conflict of this specification and Specification A 957, this
Standards, Visual Examination
specification shall prevail.
E21 Test Methods for Elevated Temperature Tension Tests
5. Heat Treatment
5.1 Steel castings shall be heat treated either by full anneal-
1
This specification is under the jurisdiction of ASTM committee A01 on Steel,
ing,normalizing,normalizingandtempering,orquenchingand
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
tempering to obtain the specified properties or other properties
A01.18 on Castings.
that have been agreed upon within each grade. In this latter
Current edition approved Jan. 1, 2005. Published January 2005. Originally
approved in 1976. Last previous edition approved in 2002 as A 732/A 732M – 02.
instance, Supplementary Requirement S23 shall be used.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
5.1.1 Heat treatment shall be performed after the castings
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
have been allowed to cool below the transformation range.
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 ----------------------
A 732/A732M – 05
TABLE 1 Chemical Requirements
Grade 1A 2A,2Q 3A,3Q 4A,4Q 5N 6N 7Q 8Q
Type Low Carbon Medium Medium Medium Vanadium Manganese Chromium Chromium
Carbon Carbon Carbon Molybdenum Molybdenum Molybdenu
...

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 732/A732M – 05
Standard Specification for
Castings, Investment, Carbon and Low Alloy Steel for
General Application, and Cobalt Alloy for High Strength at
1
Elevated Temperatures
This standard is issued under the fixed designationA732/A732M; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This specification covers carbon and low-alloy steel and cobalt alloy castings made by the investment casting process.
1.2 Fifteen grades of steel and two cobalt alloy grades are covered.
1.3 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.
1.4 This specification is expressed in both inch-pound units and 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 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 this standard.
2. Referenced Documents
2
2.1 ASTM Standards:
A 941 Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys
A 957 Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
A 994 Guide for Editorial Procedures and Form of Product Specifications for Steel, Stainless Steel, and Related Alloys
A 997 Practice for Investment Castings, Surface Accepted Standards, Visual Examination
E 21 Test Methods for Elevated Temperature Tension Tests of Metallic Materials
E 139 Practice for Conducting Creep, Creep-Rupture, and Stress-Rupture Tests of Metallic Materials
3. Ordering Information
3.1 Orders for castings under this specification should include the following information:
3.1.1 Quantity,
3.1.2 ASTM designation and issue date,
3.1.3 Grade designation (Tables 1 and 2), and
3.1.4 Description of casting by part, pattern, or drawing number. (Dimensional tolerances and machined surfaces shall be
indicated on the casting drawing.).
3.2 The purchaser should specify any of the following information to describe adequately the desired material:
3.2.1 Heat-treat condition (see 5.1 and 5.2),
3.2.2 Repair welding (see Section 8 and Specification A 957),
3.2.3 Source inspection, if any (see Specification A 957), and
3.2.4 Supplementary requirements required (marking, certification, mechanical properties, NDT, and the like).
4. General Requirements
4.1 Material furnished to this specification shall conform to the requirements of Specification A 957, including any
supplementary requirements that are indicated on the purchase order. Failure to comply with the requirements of Specification
A 957 constitutes nonconformance with this specification. In case of conflict of this specification and Specification A 957, this
specification shall prevail.
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 Jan. 1, 2005. Published January 2005. Originally approved in 1976. Last previous edition approved in 2002 as A 732/A 732M – 02.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. ForAnnualBookofASTMStandards
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 ----------------------
A 732/A732M – 05
TABLE 1 Chemical Requirements
Grade 1A 2A,2Q 3A,3Q 4A,4Q 5N 6N 7Q 8Q
Type Low Carbon Medium Medium Medium Vanadium Manganese Chromium Chromium
Carbon Carbon Carbon Molybdenum Molybdenum Molybdenum
A
IC 1020 IC 1030 IC 1040 IC 1050 IC 6120 IC 4020 IC 4130 IC 4140
Carbon 0.15 to 0.25 0.25 to 0.35 0.35 to 0.45 0.45 to 0.55 0.30 max 0.35 max 0.25 to 0.35 0.
...