ASTM A597/A597M-14(2020)
(Specification)Standard Specification for Cast Tool Steel
Standard Specification for Cast Tool Steel
ABSTRACT
This specification covers tool steel compositions appropriate for usable shapes cast by pouring directly into suitable molds and for master heats for remelting and casting. Grades of the tool steel covered in this specification include air- and oil-hardening grades such as CA-2, CD-2, CD-5, CM-2, CS-5, CS-7, CH-12, CH-13, and CO-1. The steel shall be made by one or more of the following processes: electric-arc furnace or induction furnace and may be argon-oxygen decarburization refined. Each of the steel shall undergo chemical analysis and shall conform to the chemical composition specification for carbon, manganese, silicon, sulfur, phosphorus, chromium, molybdenum, vanadium, cobalt, tungsten, and nickel. Material shall be packed and marked with heat or lot number, specification number, steel type, and form to ensure safe delivery and proper identification.
SCOPE
1.1 This specification covers tool steel castings having chemical compositions similar to those of the standard wrought grades.
1.2 Several grades are covered and are designated by chemical composition shown in Table 1.
Composition, %
Grade
CS-7
CH-12
CH-13
CD-51
Element
UNS
T91907
Carbon
0.45–0.55
0.30–0.40
0.30–0.42
0.85–1.00
Manganese
0.40–0.80
0.75 max
0.75 max
1.00–1.30
Silicon
0.60–1.00
1.50 max
1.50 max
1.50 max
Sulfur
0.03 max
0.03 max
0.03 max
0.03 max
Phosphorus
0.03 max
0.03 max
0.03 max
0.03 max
Chromium
3.00–3.50
4.75–5.75
4.75–5.75
0.40–1.00
Molybdenum
1.20–1.60
1.25–1.75
1.25–1.75
...
Vanadium
...
0.20–0.50
0.75–1.20
0.30 max
Cobalt
...
...
...
...
Tungsten
...
1.00–1.70
...
0.40–0.60
Nickel
...
...
...
...
1.3 The values stated in either SI units or inch-pound 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 necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. Inch-pound units are applicable to material ordered to Specification A597 and SI units for material ordered to A597M.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: A597/A597M −14 (Reapproved 2020)
Standard Specification for
Cast Tool Steel
This standard is issued under the fixed designationA597/A597M; 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 U.S. Department of Defense.
1. Scope* fication A781/A781M, including any supplementary require-
ments that are indicated in the purchase order. Failure to
1.1 This specification covers tool steel castings having
comply with the general requirements of Specification A781/
chemicalcompositionssimilartothoseofthestandardwrought
A781M constitutes nonconformance with this specification. In
grades.
case of conflict between the requirements of this specification
1.2 Several grades are covered and are designated by
and Specification A781/A781M, this specification shall pre-
chemical composition shown in Table 1.
vail.
1.3 The values stated in either SI units or inch-pound units
3.2 Investment castings furnished to this specification shall
are to be regarded separately as standard. Within the text, the
conform to the requirements of Specification A957/A957M,
SI units are shown in brackets. The values stated in each
including any supplementary requirements that are indicated in
system are not necessarily exact equivalents; therefore, to
the purchase order. Failure to comply with the general require-
ensure conformance with the standard, each system shall be
ments of Specification A957/A957M constitutes nonconfor-
used independently of the other, and values from the two
mance with this specification. In the case of conflict between
systemsshallnotbecombined.Inch-poundunitsareapplicable
the requirements of this specification and Specification A957/
to material ordered to Specification A597 and SI units for
A957M, Specification A957/A957M shall prevail.
material ordered to A597M.
1.4 This international standard was developed in accor- 4. Ordering Information
dance with internationally recognized principles on standard-
4.1 Orders for material under this specification should
ization established in the Decision on Principles for the
include the following information:
Development of International Standards, Guides and Recom-
4.1.1 Quantity,
mendations issued by the World Trade Organization Technical
4.1.2 Specification, including year date,
Barriers to Trade (TBT) Committee.
4.1.3 Grade of steel,
4.1.4 Description of the casting by pattern number or
2. Referenced Documents
drawing. Dimensional tolerances should be included on the
2.1 ASTM Standards:
drawing.
A781/A781M Specification for Castings, Steel and Alloy,
4.1.5 Options in the specification, and.
Common Requirements, for General Industrial Use
4.1.6 Supplementary requirements desired, including stan-
A957/A957M Specification for Investment Castings, Steel
dards of acceptance.
and Alloy, Common Requirements, for General Industrial
Use
5. Materials and Manufacture
3. General Conditions for Delivery
5.1 Heat treatment, if any, shall be as agreed between the
3.1 Except for investment castings, material furnished to producer and the purchaser.
this specification shall conform to the requirements of Speci-
5.2 Welding shall not be performed on these grades except
by approval of the purchaser.
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
6. Chemical Composition
A01.29 on Tool Steels.
Current edition approved March 1, 2020. Published March 2020
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.