ASTM A597-87(1999)
(Specification)Standard Specification for Cast Tool Steel
Standard Specification for Cast Tool Steel
SCOPE
1.1 This specification covers tool steel compositions for usable shapes cast by pouring directly into suitable molds and for master heats for remelting and casting. Note 1-A master heat is defined as any single heat of steel of certified analysis which has been processed into suitable form (shot, ingot, etc.) for remelting. A uniform blend of master heats is also acceptable for remelting. This blend is defined as a master heat lot and its average chemical composition shall be certified.
1.2 Nine grades, CA-2, CD-2, CD-5, CM-2, CS-5, CS-7, CH-12, CH-13, and CO-1, are covered in this specification. Note 2-The committee formulating this specification has included air- and oil-hardening grades of tool steel that have been extensively used. Other compositions will be considered for inclusion as the need arises.
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Designation: A 597 – 87 (Reapproved 1999)
Standard Specification for
Cast Tool Steel
This standard is issued under the fixed designation A 597; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope be argon-oxygen decarburization (AOD) refined. The steel can
be remelted in air, vacuum, or inert atmosphere.
1.1 This specification covers tool steel compositions for
usable shapes cast by pouring directly into suitable molds and
5. Chemical Requirements
for master heats for remelting and casting.
5.1 Achemicalanalysisofeachheatofsteel(seeNote1)for
NOTE 1—Amaster heat is defined as any single heat of steel of certified
master heats and for usable cast shapes shall be made by the
analysis which has been processed into suitable form (shot, ingot, etc.) for
manufacturer in accordance with Test Methods A 751. Sam-
remelting. A uniform blend of master heats is also acceptable for
pling shall be in accordance with Method E 59. The chemical
remelting. This blend is defined as a master heat lot and its average
composition thus determined shall not vary from the limits
chemical composition shall be certified.
specified in Table 1.
1.2 Nine grades, CA-2, CD-2, CD-5, CM-2, CS-5, CS-7,
CH-12, CH-13, and CO-1, are covered in this specification.
6. Inspection
NOTE 2—The committee formulating this specification has included 6.1 When specified in the purchase order, the inspector
air- and oil-hardening grades of tool steel that have been extensively used.
representing the purchaser shall have access to the material
Other compositions will be considered for inclusion as the need arises.
subjecttoinspectionforthepurposeofwitnessingtheselection
of samples and performance of the analytical tests. For such
2. Referenced Documents
tests, the inspector shall have the right to indicate the pieces
2.1 ASTM Standards:
from which samples will be selected. Otherwise, the manufac-
A 751 Test Methods, Practices, and Terminology for
turer shall report to the purchaser, or his representative, the
Chemical Analysis of Steel Products
results of the chemical analysis made in accordance with this
E 59 PracticeforSamplingSteelandIronforDetermination
specification.
of Chemical Composition
7. Rejection and Rehearing
3. Ordering Information
7.1 Rejection—Unless otherwise specified, any rejection
3.1 Purchase orders shall include the following information
based on tests made in accordance with this specification shall
to describe the desired material:
bereportedtothemanufacturerwithin30daysfromthedateof
3.1.1 ASTM specification number and date of issue,
receipt of the material.
3.1.2 Name of material (cast tool steel),
7.2 Rehearing—Samples tested in accordance with this
3.1.3 Grade (see Table 1),
specification that represent rejected material shall be preserved
3.1.4 Form (shot, ingot, or shaped castings), and
for three weeks from the date of the test report. In case of
3.1.5 Special requirements.
dissatisfaction with the results of the test, the manufacturer
may make claim for a rehearing within that time.
4. Materials and Manufacture
4.1 The steel shall be made by one or more of the following
8. Packaging and Package Marking
processes: El
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