ASTM D6456-99(2004)
(Specification)Standard Specification for Finished Parts Made from Polyimide Resin
Standard Specification for Finished Parts Made from Polyimide Resin
SCOPE
1.1 This specification is intended to be a means of calling out finished plastic parts ready for industrial or consumer use.
1.2 This specification covers finished parts and shapes from which parts are machined, made from a semi-crystalline polyimide (PI).
1.3 This specification is intended to replace MIL-R-46198 and Provisional Standard Specification PS 93.
Note 1—There is no similar or equivalent ISO standard.
1.4 This specification covers parts made from semi-crystalline polyimide, which is a thermosetting material that shows no softening or melting by DMA (D 4065) at or below 260°C [500°F].
1.5 Since PI is a thermoset resin, no provisions are included for recycled products.
1.6 The classification system outlined in this specification is intended to be identical to that used by Department of Defense for over 20 years. No changes are intended at this time.
1.7 The values are stated in SI units and are regarded as the standard in all property and dimensional tables. For reference purposes, inch-pound units are stated in brackets.
1.8 Application—Parts in this specification are generally used for applications requiring the following combination of properties: low coefficient of friction, and low thermal expansion coupled with heat resistance for continuous operation at temperatures up to 260°C [500°F] and for short-term excursions upward to 482°C [900°F].
1.9 The following precautionary caveat pertains only to the test method portion, Section 12, of this specification: This standard does not purport to address all of the safety concerns, 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.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D6456 – 99 (Reapproved 2004)
Standard Specification for
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Finished Parts Made from Polyimide Resin
This standard is issued under the fixed designation D6456; 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.
1. Scope 2. Referenced Documents
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1.1 This specification is intended to be a means of calling 2.1 ASTM Standards:
out finished plastic parts ready for industrial or consumer use. D638 Test Method for Tensile Properties of Plastics
1.2 This specification covers finished parts and shapes from D695 Test Method for Compressive Properties of Rigid
which parts are machined, made from a semi-crystalline Plastics
polyimide (PI). D790 Test Methods for Flexural Properties of Unreinforced
1.3 This specification is intended to replace MIL-R-46198 and Reinforced Plastics and Electrical Insulating Materials
and Provisional Standard Specification PS 93. D792 Test Methods for Density and Specific Gravity (Rela-
tive Density) of Plastics by Displacement
NOTE 1—There is no known ISO equivalent to this standard.
D883 Terminology Relating to Plastics
1.4 This specification covers parts made from semi-
D1600 Terminology for Abbreviated Terms Relating to
crystalline polyimide, which is a thermosetting material that
Plastics
shows no softening or melting by DMA (D4065) at or below
D1708 Test Method for Tensile Properties of Plastics by
260°C (500°F).
Use of Microtensile Specimens
1.5 Since PI is a thermoset resin, no provisions are included
D3892 Practice for Packaging/Packing of Plastics
for recycled products.
D4065 Practice for Plastics: Dynamic Mechanical Proper-
1.6 The classification system outlined in this specification is
ties: Determination and Report of Procedures
intended to be identical to that used by Department of Defense
E8 Test Methods for Tension Testing of Metallic Materials
for over 20 years. No changes are intended at this time.
2.2 ANSI Standard:
1.7 The values are stated in SI units and are regarded as the
Z1.4 Standard for Sampling Plans and Tables for Inspection
,
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standard in all property and dimensional tables. For reference
by Attributes
purposes, inch-pound units are stated in parentheses.
2.3 Military Standards:
1.8 Application—Parts in this specification are generally 5
MIL-R-46198
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used for applications requiring the following combination of
MIL-STD 129
properties: low coefficient of friction, and low thermal expan-
3. Terminology
sion coupled with heat resistance for continuous operation at
temperatures up to 260°C (500°F) and for short-term excur-
3.1 Definitions—Terms are defined in accordance with Ter-
sions upward to 482°C (900°F).
minologies D883 and D1600 unless otherwise indicated.
1.9 The following precautionary caveat pertains only to the
4. Classification
test method portion, Section 12, of this specification: This
standard does not purport to address all of the safety concerns,
4.1 Product shape and size as defined in the applicable
if any, associated with its use. It is the responsibility of the user
purchase order.
of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limita-
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
tions prior to use.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
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This specification is under the jurisdiction of ASTM Committee D20 on the ASTM website.
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Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
Materials. 4th Floor, New York, NY 10036.
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Current edition approved March 1, 2004. Published June 2004. Originally Replaced MIL-STD-105.
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approved in 1999. Last previous edition approved in 1999 as D6456 - 99. DOI: Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
10.1520/D6456-99R04. Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D6456 – 99 (2004)
TABLE 2 Manufacturing Method and Form
4.2 The type of product shall be categorized by type and
class depending on resin and filler compositions defined as Suffix Letter Product Form
follows:
M Hot isostatically molded billet
P Hot unidirectionally pressed slab
Type I Unfilled base resin
D Direct-formed (pressed) and sintered parts
Type II Resin with graphite filler
Class 1 15 % by weight graphite filler, nomina
...
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