ASTM A667/A667M-87(1998)

Standard Specification for Centrifugally Cast Dual Metal (Gray and White Cast Iron) Cylinders

SCOPE
1.1 This specification  covers centrifugally cast cylinders with an outer layer of white cast iron and the remainder of the material of gray cast iron. These castings are suitable for pressure containing parts the design strength of which is based on the gray iron portion of the cylinder. These castings are suitable for service at temperatures up to 450°F [230°C].
1.2 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 stated in each system are not exact equivalents; therefore, each system must be used independent of the other. Combining values from the two systems may result in nonconformance with the specification.  
1.3 The following safety hazards caveat pertains only to the test method portion, Section 8, of this specification: This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Oct-1998
• Technical Committee: A04 - Iron Castings
• Drafting Committee: A04.01 - Grey and White Iron Castings

Relations

• Replaced By: ASTM A667/A667M-87(2003) - Standard Specification for Centrifugally Cast Dual Metal (Gray and White Cast Iron) Cylinders
• Effective Date: 10-May-2003
• Referred By: ASTM A748/A748M-87(2022) - Standard Specification for Statically Cast Chilled White Iron-Gray Iron Dual Metal Rolls for Pressure Vessel Use
• Effective Date: 10-Oct-1998

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation: A 667/A 667M – 87 (Reapproved 1998)
Standard Specification for
Centrifugally Cast Dual Metal (Gray and White Cast Iron)
Cylinders
This standard is issued under the fixed designation A 667/A 667M; 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 3.2 The white iron portion of the cylinder shall be made to
a minimum hardness of 55 Scleroscope “C”. The gray iron
1.1 This specification covers centrifugally cast cylinders
portion of the cylinder shall conform to Specification A 278,
with an outer layer of white cast iron and the remainder of the
Class 20 [A 278M, Class 150].
material of gray cast iron. These castings are suitable for
3.3 The casting process shall be controlled to produce a
pressure containing parts the design strength of which is based
metallurgical bond between the two metal layers.
on the gray iron portion of the cylinder. These castings are
suitable for service at temperatures up to 450°F [230°C].
4. Finish
1.2 The values stated in either inch-pound units or SI units
4.1 All surfaces shall be machined prior to the cylinders
are to be regarded separately as standard. Within the text, the
being placed into service.
SI units are shown in brackets. The values stated in each
system are not exact equivalents; therefore, each system must
5. Physical Requirements
be used independent of the other. Combining values from the
5.1 Tensile Requirements—Tension test specimens removed
two systems may result in nonconformance with the specifi-
from the casting shall have a tensile strength not less than 80 %
cation.
of that specified in 3.2.
1.3 The following safety hazards caveat pertains only to the
5.2 Thickness of White Cast Iron:
test method portion, Section 8, of this specification: This
5.2.1 The thickness of the white cast iron shall be not less
standard does not purport to address all of the safety problems,
than 5 % nor more than 30 % of the total finished wall
if any, associated with its use. It is the responsibility of the user
thickness.
of this standard to establish appropriate safety and health
5.2.2 The thickness of the white cast iron shall be deter-
practices and determine the applicability of regulatory limita-
mined by ultrasonic testing.
tions prior to use.
6. Number of Tests
2. Referenced Documents
6.1 The number of tension tests shall be in conformance
2.1 ASTM Standards:
with Specifications A 278 and A 278M.
A 278 Specification for Gray Iron Castings for Pressure-
Containing Parts for Temperatures Up to 650°F
7. Specimen Preparation
A 278M Specification for Gray Iron Castings for Pressure-
7.1 Separately cast test bars may be used to represent the
Containing Parts for Temperatures Up to 345°C [Metric]
gray iron portion of the castings. The test bars shall be cast in
core sand and have a nominal diameter of 2 in. [50 m]. Tension
3. Materials and Manufacture
test specimens shall be machined from test bars to the
3.1 The melting procedures shall be optional with the
dimensions given for Specimen C in Specifications A 278 and
foundry.
A 278M.
7.2 At the option of the manufacturer he may substitute test
This specification is under the jurisdiction of Committee A-4 on Iron Castings
bars taken from the gray iron portion of the casting. The test
and is the direct responsibility of Subcommittee A04.01 on Grey and White Iron
bars shall be taken midway between the inside diameter of the
Castings.
casting and the interface between the two layers. Tension test
Current edition approved Oct. 30, 1987. Published December 1987. Ori
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