ASTM D5740-97
(Guide)Standard Guide for Writing Material Standards in the Classification D4000 Format
Standard Guide for Writing Material Standards in the Classification D4000 Format
SCOPE
1.1 This classification system covers ___ materials suitable for ___________. The inclusion or exclusion of recycled materials in this classification system must be addressed here.
1.2 The properties included in this standard 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 the suffixes as given in Section 5.
1.3 This classification system and subsequent line callout (specification) are intended to provide a means of calling out plastic 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 plastic 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 costs involved, and the inherent properties of the material other than those covered by this standard. Note 1-Insert Note 1 here to show the appropriate ISO equivalency statement.
1.4 The following precautionary caveat pertains only to the test method 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.
General Information
Relations
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.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.
Designation: D 5740 – 97 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Guide for
Writing Material Standards in the Classification D 4000
Format
This standard is issued under the fixed designation D 5740; 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.
INTRODUCTION
This guide has been prepared to aid in the writing of material standards using the Classification
D 4000 format. The following template is included which might be used directly for a draft document
simply by filling in the blanks. See appendixes for additional explanatory information.
1. Scope * Insulating Materials for Testing
D 883 Terminology Relating to Plastics
1.1 This classification system covers ___ materials suitable
D 1600 Terminology for Abbreviated Terms Relating to
for _____________. The inclusion or exclusion of recycled
Plastics
plastics in this classification system must be addressed here.
D 1999 Guide for the Selection of Specimens and Test
1.2 The properties included in this standard are those
Parameters for International Commerce
required to identify the compositions covered. There may be
D 3892 Practice for Packaging/Packing of Plastics
other requirements necessary to identify particular character-
D 4000 Classification System for Specifying Plastic Mate-
istics important to specialized applications. These may be
rials
specified by using the suffixes as given in Section 5.
D 4066 Specification for Nylon Injection and Extrusion
1.3 This classification system and subsequent line callout
Materials (PA)
(specification) are intended to provide a means of calling out
D 5033 Guide for the Development of Standards Relating to
plastic materials used in the fabrication of end items or parts.
the Proper Use of Recycled Plastics
It is not intended for the selection of materials. Material
selection should be made by those having expertise in the
NOTE 2—Omit if use of recycled plastic is not allowed.
plastic field after careful consideration of the design and the
D 5630 Test Method for Ash Content in Thermoplastics
performance required of the part, the environment to which it
E 29 Practice for Using Significant Digits in Test Data to
will be exposed, the fabrication process to be employed, the
Determine Conformance with Specifications
costs involved, and the inherent properties of the material other
3. Terminology
than those covered by this standard.
3.1 Except for the terms defined below, the terminology
NOTE 1—Insert Note 1 here to show the appropriate ISO equivalency
used in this classification system is in accordance with Termi-
statement.
nologies D 883 and D 1600.
1.4 The following precautionary caveat pertains only to the
test method portion, Section 11, of this classification system:
4. Classification
This standard does not purport to address all of the safety
4.1 ___ materials are classified into groups according to
concerns, if any, associated with its use. It is the responsibility
their composition. These groups are subdivided into classes
of the user of this standard to establish appropriate safety and
and grades as shown in the Basic Property Table (Table __). An
health practices and determine the applicability of regulatory
example of a basic property table can be found in Specification
limitations prior to use.
D 4066.
2. Referenced Documents
NOTE 3—An example of this classification system is given as follows:
The designation ___ indicates the following:
2.1 ASTM Standards:
_ 5 ___ as found in Terminology D 1600,
D 618 Practice for Conditioning Plastics and Electrical
This guide is under the jurisdiction of ASTM Committee D-20 on Plastics and
is the direct responsibility of Subcommittee D20.94 on Government/Industry Annual Book of ASTM Standards, Vol 08.01.
Standardization. Annual Book of ASTM Standards, Vol 08.02.
Current edition approved July 10, 1997. Published May 1998. Originally Annual Book of ASTM Standards, Vol 08.03.
published as D 5740 – 95. Last previous edition D 5740 – 95. Annual Book of ASTM Standards, Vol 14.02.
*A Summary of Changes section appears at the end of this standard.
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.
D 5740
5. Suffixes
_ 5 ___ (group),
_ 5 ___ (class), and
5.1 When additional requirements are needed that are not
_ 5 requirements given Table __ (grade).
covered by the basic requirements or cell-table requirements,
4.1.1 To facilitate incorporation of future or special materi-
they shall be indicated through the use of suffixes.
als the “other” category for group (00), class (0), and grade (0)
5.2 A list of suffixes can be found in Classification System
is shown in Table __. The basic properties of these materials
D 4000 (Table 3) and may be used for additional requirements
can be obtained from Tables A or B as they apply. Cell tables
as appropriate. Additional suffixes will be added to that
found in Specification D 4066 can be used as examples.
standard as test methods and requirements are developed and
4.2 Reinforced, filled, and lubricated versions of ___ mate-
requested.
rials that are not in Table __ are classified in accordance with
Tables __ and A or B. Table __ is used to specify the Group of
6. General Requirements
___ and Table A or B is used to specify the property
6.1 Basic requirements from the property tables or cell
requirements after the addition of reinforcements, pigments,
tables are always in effect unless superseded by specific suffix
fillers, or lubricants at the nominal level indicated (see 4.2.1).
requirements, which always take precedence.
4.2.1 Reinforced versions of the basic materials are identi-
6.2 The plastics composition shall be uniform and shall
fied by a single letter that indicates the reinforcement used and
conform to the requirements specified herein.
two digits that indicate the nominal quantity in percent by
weight. Thus, a letter designation G for glass-reinforced and 33
7. Detail Requirements
for percent of reinforcement, G33, specifies a filled material
7.1 The materials shall conform to the requirements in
with a nominal glass level of 33 %. The reinforcement letter
Tables __, __,__ , and suffix requirements as they apply.
designations and associated tolerance levels are shown in the
7.2 For purposes of determining conformance, all specified
following table:
limits for a specification (line callout) based on this classifica-
Symbol Material Tolerance
tion system are absolute limits, as defined in Practice E 29.
7.2.1 With the absolute method, an observed value or a
C carbon and graphite fiber reinforced 6 %
G glass-reinforced
calculated value is not rounded, but is to be compared directly
L lubricants (such as PTFE, graphite, sili- Depends upon mate-
with the limiting value. Conformance or nonconformance is
cone, and molybdenum disulfide) rial and process—to
based on this comparison.
be specified.
M mineral-reinforced 6 %
R combinations of reinforcements or fillers, 6 %
8. Sampling
or both
8.1 Sampling shall be statistically adequate to satisfy the
NOTE 4—This part of the classification system uses
...
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