ASTM D5740-18

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D5740 − 16 D5740 − 18
Standard Guide for
Writing Material Standards in the Classification D4000 For-
mat
This standard is issued under the fixed designation D5740; 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.
INTRODUCTION
This guide has been prepared to aid in the writing of material standards using the Classification
D4000 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.
Standard Classification System for and Basis for Specification for _____ Molding and Extrusion Materials (______)
1. Scope*
1.1 This classification system covers ___ materials suitable for _____________. The inclusion or exclusion of recycled plastics
in this classification system must be addressed here.
1.2 The properties included in this standard are those required to identify the compositions covered. Other requirements
necessary to identify particular characteristics important to specialized applications are to be specified by using 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 can be
made by those having expertise in the plastic field only 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.
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, health, and environmental practices and determine the applicability of regulatory
limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
This guide is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.94 on Government/Industry
Standardization.
Current edition approved Sept. 1, 2016May 1, 2018. Published September 2016June 2018. Originally approved in 1995. Last previous edition approved in 20112016 as
D5740 – 11.D5740 – 16. DOI: 10.1520/D5740-16.10.1520/D5740-18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 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 the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D5740 − 18
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
D3892 Practice for Packaging/Packing of Plastics
D4000 Classification System for Specifying Plastic Materials
D5205 Classification System and Basis for Specification for Polyetherimide (PEI) Materials
D5630 Test Method for Ash Content in Plastics
D6779 Classification System for and Basis of Specification for Polyamide Molding and Extrusion Materials (PA)
D7209 Guide for Waste Reduction, Resource Recovery, and Use of Recycled Polymeric Materials and Products (Withdrawn
2015)
NOTE 2—Omit D7209 if use of recycled plastic is not allowed.
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
2.2 ISO Standards:
ISO 3451–1 Plastics—Determination of Ash Content—Part 1: General Methods
3. Terminology
3.1 Except for the terms defined below, the terminology used in this classification system is in accordance with Terminologies
D883 and D1600.
4. Classification
4.1 ___ materials are classified into groups according to their composition. These groups are subdivided into classes and grades
as shown in the Basic Property Table (Table __). An example of a basic property table can be found in Classification System
D6779. The property table contains a footnote referring to Section ___ for reference to specimen source and preparation.
NOTE 3—An example of this classification system is given as follows: The specification ___ indicates the following:
_ = ___ as found in Terminology D1600,
_ = ___ (group),
_ = ___ (class), and
_ = requirements given in Table __ (grade).
4.1.1 Reinforced, filled, and lubricated versions of ___ materials that are found in Table _____ are classified according to the
reinforcement used and the nominal level, by weight percent, of the reinforcement. The grade is identified by a single letter that
indicates the filler or reinforcement used and two digits, in multiples of 5, that indicate the nominal quantity in percent by weight.
Thus, a grade containing 35 % glass reinforcement would be indicated by _____ G35. This specification indicates
_ = ___ as found in Terminology D1600,
_ = ___ (group),
_ = ___ (class), and
_ = 35 % glass reinforcement and requirements given Table __ (grade).
The reinforcement letter designations and associated tolerance levels are shown in the following table:
A B
TABLE 1 Reinforcement-Filler Symbols and Tolerances
Symbol Material Tolerance
C Carbon and graphite ±2 %
D Alumina trihydrate ±2 %
E Clay ±2 %
F Cellulose ±2 %
G Glass ±2 %
H Aramid ±2 %
J Boron ±2 %
K Calcium carbonate ±2 %
L Lubricants (for example: PTFE, graphite) Depends upon
material and
process—to be
specified.
M Mineral ±2 %
N Natural organic (for example: cotton, sisal, ±2 %
hemp, flax)
P Mica ±2 %
Q Silica ±2 %
R Combinations of reinforcements and/or fillers ±2 %
S Synthetic organic ±2 %
T Talcum ±2 %
V Metal ±2 %
W Wood ±2 %
The last approved version of this historical standard is referenced on www.astm.org.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
D5740 − 18
X Not specified To be specified
A
Ash content of filled and/or reinforced materials is to be determined using either Test Method D5630 or ISO 3451-1 where applicable.
B
Additional symbols will be added to this table as required.
NOTE 4—This part of the classification system uses the percent of reinforcements or additives, or both, in the callout of the modified basic material.
The types and percentages of reinforcements and additives are sometimes shown on the supplier’s technical data sheet. If necessary, additional callout
of these reinforcements and additives can be accomplished by use of the suffix part of the system (see Section 5).
NOTE 5—Materials containing reinforcements or fillers, or both, at nominal levels not in multiples of five are included in the nearest grade designation.
For example, a material with a nominal glass fiber level of 33 % is included with Grade G35 as shown in 4.1.1., and a material with a nominal glass fiber
content of 32 % would meet the requirements listed for Grade G30. Tolerances as shown in Table 1 are applied to the material’s nominal filler levels (33 %
and 32 %, respectively).
4.1.2 To facilitate incorporation of future or special materials the “other” category for group (00), class (0), and grade (0) is
shown in Table __.
4.2 Reinforced, filled, and lubricated versions of ___ materials that are not in Table __ are classified in accordance with Tables
__ and A or B. Table __ is used to specify the Group or the group and class of ___ and Table A or B is used to specify the property
requirements.
4.2.1 Reinforced, filled, and lubricated variations of the basic materials are identified by a single letter from Table 1 that
indicates the filler and/or reinforcement used and two digits that indicate the nominal quantity in percent by weight. A second letter,
from Table 1a, when desired, is used to indicate the form or structure of the reinforcement and/or filler, but is not used for
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