ASTM A197/A197M-00

Standard Specification for Cupola Malleable Iron

SCOPE
1.1 This specification covers malleable irons for castings made by the cupola process.
1.2 Without knowledge of casting geometry and process details, no quantitative relationship can be stated between the properties of the iron in the various locations of a casting and those of a test bar cast from the same iron.
1.3 The values stated are in inch-pound units and are to be regarded as the standard. A complete metric companion Specification A197M has been developed; therefore, no metric equivalents are shown in this specification.

General Information

• Status: Historical
• Publication Date: 09-May-2000
• ICS: 77.080.10 - Irons
• Technical Committee: A04 - Iron Castings
• Drafting Committee: A04.02 - Malleable and Ductile Iron Castings

Relations

• Replaced By: ASTM A197/A197M-00(2006) - Standard Specification for Cupola Malleable Iron
• Effective Date: 01-Feb-2006
• Referred By: ASTM A834-95(2020) - Standard Specification for Common Requirements for Iron Castings for General Industrial Use
• Effective Date: 10-May-2000

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 197/A 197M – 00
Standard Specification for
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Cupola Malleable Iron
This standard is issued under the fixed designationA 197/A 197M; 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 5. Ordering Information
1.1 This specification covers malleable irons for castings 5.1 The purchase order for castings ordered under this
made by the cupola process. specification shall state the specification designation and the
1.2 Without knowledge of casting geometry and process year in which the specification was issued.
details, quantitative relationships cannot be stated between the 5.2 Any options or special additions to the basic require-
properties of the iron in the various locations of a casting and ments of this specification shall be clearly and fully stipulated.
those of a test bar cast from the same iron.
6. Chemical Composition
1.3 The values stated in either inch-pound units or SI units
6.1 The chemical composition of the iron shall be such as to
are to be regarded separately as standard. Within the text, the
SI units are shown in brackets. The values stated in each produce the mechanical properties required by this specifica-
tion.
system are not exact equivalents; therefore, each system shall
be used independently of the other. Combining values from the
7. Mechanical Requirements
two systems may result in nonconformance with the specifi-
7.1 Factors influencing the properties of castings and their
cation.
relationship to those of test specimens and separate test
2. Referenced Documents
castings are discussed in Appendix X1.
2.1 ASTM Standards: 7.2 Tensile Test:
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7.2.1 Tensile Test Specimens:
A 197M Specification for Cupola Malleable Iron (Metric)
A 247 Test Method for Evaluating the Microstructure of 7.2.1.1 The tensile test specimens shall be cast to the form
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Graphite in Iron Castings and dimensions shown in Fig. 1 and Fig. 2 using the same kind
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of molding material used for the production castings.
A 644 Terminology Relating to Iron Castings
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E 8 Test Methods forTensionTesting of Metallic Materials 7.2.1.2 All test specimens shall be suitably identified with
the designation of the pour period.
3. Terminology
7.2.1.3 All test specimens shall be heat treated in the same
3.1 Definitions—Definitions for many terms common to production furnace and for the same cycles as the castings they
iron castings are found in Terminology A 644. represent.
7.2.2 Tensile Test Method:
4. Classification
7.2.2.1 Perform the tensile test on unmachined specimens.
4.1 Iron produced for castings ordered under this specifica- 7.2.2.2 Gage Length—The gage length of the standard
tion is classified in a single grade and is qualified by tests on
tensile specimen shall be 2.00 6 0.01 in. [50.0 6 0.03 mm].
separately cast test bars. Separately cast test bars shall be 7.2.2.3 Cross-Sectional Area—The diameter used to com-
poured from the same lot of iron as the castings they represent
pute the cross-sectional area shall be the average between the
and shall be heat treated with those castings. largest and smallest diameters in that section of the 2-in. [50
mm] gage length having the smallest diameter and shall be
measured to the nearest 0.001 in. [0.02 mm]. No cast bar
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This specification is under the jurisdiction of ASTM Committee A04 on Iron
having a mean diameter less than 0.590 in. [15 mm] shall be
Castings and is the direct responsibility of SubcommitteeA04.02 on Malleable Iron
accepted for test.
Castings.
Current edition approved May. 10, 2000. Published May 2000. Originally
published as A 197 – 36 T. Last previous edition A 197 – 98.
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Annual Book of ASTM Standards, Vol 01.02.
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Annual Book of ASTM Standards, Vol 03.01.
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A 197/A 197M
FIG. 1 Tension Test Specimen
NOTE 1—Modifications may be made in the dimensions indicated above for those details of the specimen outside of the gage length as required by
testing procedure and equipment.
FIG. 2 Alternative Unmachined Tension Test Specimen
7.2.2.4 Speed of Testing—After reaching a stress equivalent 0.5 % extension) or an offset of 0.2 % shall be taken as the
to approximately half of the anticipated yield stress, the speed yield stress, which shall be converted to yield strength by
of the moving head of the testing machine shall not exceed dividing by the original cross-sectional area of the gage length
0.50 in./min [1
...