ASTM D5204-99
(Classification)Standard Classification System for Polyamide-Imide (PAI) Molding and Extrusion Materials
Standard Classification System for Polyamide-Imide (PAI) Molding and Extrusion Materials
SCOPE
1.1 This classification system covers polyamide-imide materials suitable for injection molding and extrusion.
1.2 The properties included in this classification system are those required to identify the compositions covered. There may be other requirements necessary to identify particular characteristics important to specialized applications. These may be specified by using suffixes as given in Section 5.
1.3 This standard allows for the use of recycled materials provided that specification requirements based upon this classification system are met.
1.4 This classification system and subsequent line call-out (specification) is intended to be a means of calling out plastics materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection should be made by those having expertise in the plastics field after careful consideration of the design and the performance required of the part, the environment to which it will be exposed, the fabrication process to be employed, the inherent properties of the material other than those covered by this classification, and the economics.
1.5 The values stated in SI units are to be regarded as the standard. (Reporting in inch-pound units is acceptable.)
Note 1—There is no equivalent or similar ISO standard.
1.6 The following precautionary caveat pertains only to the test methods portion, Section 11, of this classification system: 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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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
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Designation: D 5204 – 99 An American National Standard
Standard Classification System for
Polyamide-Imide (PAI) Molding and Extrusion Materials
This standard is issued under the fixed designation D 5204; 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 D 150 Test Methods for A-C Loss Characteristics and
Permittivity (Dielectric Constant) of Solid Electrical Insu-
1.1 This classification system covers polyamide-imide ma-
lating Materials
terials suitable for injection molding and extrusion.
D 256 Test Methods for Impact Resistance of Plastics and
1.2 The properties included in this classification system are
Electrical Insulating Materials
those required to identify the compositions covered. There may
D 257 Test Methods for D-C Resistance or Conductance of
be other requirements necessary to identify particular charac-
Insulating Materials
teristics important to specialized applications. These may be
D 618 Practice for Conditioning Plastics and Electrical
specified by using suffixes as given in Section 5.
Insulating Materials for Testing
1.3 This standard allows for the use of recycled materials
D 790 Test Methods for Flexural Properties of Unreinforced
provided that specification requirements based upon this clas-
and Reinforced Plastics and Electrical Insulating Materi-
sification system are met.
als
1.4 This classification system and subsequent line callout
D 792 Test Methods for Density and Specific Gravity (Rela-
(specification) is intended to be a means of calling out plastics
tive Density) of Plastics by Displacement
materials used in the fabrication of end items or parts. It is not
D 883 Terminology Relating to Plastics
intended for the selection of materials. Material selection
D 1525 Test Method for Vicat Softening Temperature of
should be made by those having expertise in the plastics field
Plastics
after careful consideration of the design and the performance
D 1600 Terminology for Abbreviated Terms Relating to
required of the part, the environment to which it will be
Plastics
exposed, the fabrication process to be employed, the inherent
D 1708 Test Method for Tensile Properties of Plastics by
properties of the material other than those covered by this
Use of Microtensile Specimens
classification, and the economics.
D 2863 Test Method for Measuring the Minimum Oxygen
1.5 The values stated in SI units are to be regarded as the
Concentration to Support Candle-Like Combustion of
standard. (Reporting in inch-pound units is acceptable.)
Plastics (Oxygen Index)
NOTE 1—There is no equivalent or similar ISO standard.
D 3641 Practice for Injection Molding Test Specimens of
1.6 The following precautionary caveat pertains only to the Thermoplastic Molding and Extrusion Materials
test methods portion, Section 11, of this classification system: D 3892 Practice for Packaging/Packing of Plastics
This standard does not purport to address all of the safety D 4000 Classification System for Specifying Plastic Mate-
concerns, if any, associated with its use. It is the responsibility rials
of the user of this standard to establish appropriate safety and E 29 Practice for Using Significant Digits in Test Data to
health practices and determine the applicability of regulatory Determine Conformance With Specifications
limitations prior to use. IEEE/ASTM SI-10 Standard for Use of the International
System of Units (SI): The Modern Metric System
2. Referenced Documents 6
2.2 Military and Federal Specifications and Standards:
2.1 ASTM Standards: MIL-P-46179A Plastic Molding and Extrusion Materials,
D 149 Test Method for Dielectric Breakdown Voltage and
Polyamide-Imide (PAI)
Dielectric Strength of Solid Electrical Insulating Materials
NOTE 2—MIL-P-46179A property requirements are the basis of Clas-
at Commercial Power Frequencies
sification System D 5204. The Department of Defense adopted Classifi-
cation System D 5204 on July 27, 1994, and canceled MIL-P-46179A.
This classification system is under the jurisdiction of ASTM Committee D-20
on Plastics and is the direct responsibility of Subcommittee D20.15 on Thermo- Annual Book of ASTM Standards, Vol 08.01.
plastic Materials. Annual Book of ASTM Standards, Vol 08.02.
Current edition approved July 10, 1999. Published October 1999. Originally Annual Book of ASTM Standards, Vol 14.02.
published as D 5204 – 91. Last previous edition D 5204 – 91. Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700
Annual Book of ASTM Standards, Vol 10.01. Robbins Ave., Philadelphia, PA 19111-5094, attn: NPODS.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
D 5204
2.3 SAE Specifications:
G Glass fiber reinforced 63 percentage points
L Lubricants 63 percentage points
AMS 3670B Polyamide-Imide Bar, Rod, and Shapes
M Minerals 63 percentage points
Molded or Extruded
R Combinations of reinforcements or 65 percentage points
AMS 3670/1B Unfilled Polyamide-Imide Bar, Rod and
fillers, or both
Shapes
4.3.3 This part of the classification system uses the type and
AMS 3670/2B Polyamide-Imide Bar, Rod and Shapes 20-
percentage of additive to designate the modification of the
Graphite-3-Polytetrafluoroethylene Filled
basic material. To facilitate this designation, the type and
AMS 3670/3B Polyamide-Imide Bar, Rod and Shapes 12-
percentage of additive can be shown on the supplier’s technical
Graphite-3-Polytetrafluoroethylene Filled
data sheet unless it is proprietary in nature. If necessary,
AMS 3670/4C Polyamide-Imide Bar, Rod and Shapes 30
additional requirements shall be indicated by use of the suffix
Glass Fiber
part of the system, as given in Section 5.
AMS 3670/5C Polyamide-Imide Bar, Rod and Shapes 30
4.3.4 An example of this classification system for a
Carbon Graphite Fiber
polyamide-imide material is as follows:
The designation PAI0130G40A61550
3. Terminology
PAI0130 = polyamide-imide from Table PAI,
3.1 The terminology used in this classification system is in G40 = glass reinforced at 40 % nominal level,
A = Table A physical-property requirements,
accordance with Terminology D 883 and D 1600.
6 = tensile strength, 172 MPa, min,
3.2 Definitions of Terms Specific to This Standard:
1 = elongation, 4 %, min,
5 = flexural strength, 269 MPa, min,
3.2.1 polyamide-imide (PAI), n—a polymer that may be
5 = flexural modulus, 11700 MPa, min, and
composed of linkages of all random, or all block, or all
0 = unspecified property.
alternating, or any combination thereof, amide and imide units
If no properties are specified, the designation would be PAI0130G40A00000.
in the structural backbone.
5. Suffixes
4. Classification
5.1 When additional requirements are needed, based on
application, that are not covered by the basic requirements
4.1 The polyamide-imide materials shall be designated PAI,
as specified in Terminology D 1600. (Table PAI) or cell-table requirements (Table A), they shall be
indicated through the use of suffixes.
4.2 Polyamide-imide materials are classified into groups
that are subdivided into classes and grades as shown in Table 5.2 A list of suffixes can be found in Classification System
D 4000 (Table 3) and may be used for additional requirements
PAI.
4.2.1 An example of this classification system is as follows: as appropriate. Additional suffixes will be added to Classifica-
tion System D 4000 as test methods and requirements are
The designation PAI012L23 would indicate from Table PAI:
PAI = Polyamide-imide as found in Terminology D 1600,
developed and requested.
01 (Group) = Injection molding material,
5.2.1 An example of this classification system using a suffix
2 (Class) = Wear resistance PAI, and
is as follows:
L23 (Grade) = Nominal 20 % graphite and 3 % PTFE with the require-
ments given in Table PAI.
The designation PAI041G30CAXXX
PAI041G30 = polyamide-imide material as described in Table PAI,
4.2.2 To facilitate the incorporation of special materials not
C = melting point / softening point from Classification System
covered in Table PAI, the “other” category (0) for group, class,
D 4000,
A = Test Method D 1525,, Rate A (Vicat), and
and grade is shown on the table with the basic properties to be
XXX = three digit number indicating minimum value, °C.
obtained from Table A.
4.3 Table A shall be used to specify the physical property
5.3 Suffixes for electrical properties, if required, can be
requirements that shall be shown by a six-character designa-
found in Table XE in Appendix X1.
tion. The designation shall consist of the letter A and the five
digits comprising the cell numbers for the property require-
6. General Requirements
ments in the order as they appear in Table A.
6.1 Basic requirements from Table A, as they apply, are
4.3.1 Although the values listed are necessary to include the
always in effect unless these requirements are superseded by
range of properties available in existing materials, users should
specific suffix requirements, which always take precedence.
not infer that every possible combination of the properties
6.1.1 The material composition shall be uniform and shall
exists or can be obtained.
conform to the requirements specified herein.
4.3.2 A single letter shall be used to indicate the major
reinforcement or combinations, or both, along with two digits
7. Detail Requirements
that indicate the percentage of additive(s) by total mass, with
7.1 Test specimens for the various materials shall conform
tolerances tabulated as follows:
to the requirements prescribed in Table A and the suffix
Category Material Tolerance
requirements as they apply.
C Carbon or graphite fiber reinforced 63 percentage points 7.2 For the purpose of determining conformance, all speci-
fied limits in this specification (line callout) based on this
classification system, are lot average by round-off, as defined in
Practice E 29.
Available from the Society of Automotive Engineers, Inc., 400 Commonwealth
Drive, Warrendale, PA 15096. 7.2.1 With the round-off method, an observed value or a
D 5204
calculated value should be rounded off to the nearest unit in the 11.2 Specify methods for reinforcement and additive con-
designated plac
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