ASTM D1972-97
(Practice)Standard Practice for Generic Marking of Plastic Products
Standard Practice for Generic Marking of Plastic Products
SCOPE
1.1 This practice covers a system for uniform marking of products that have been fabricated from polymeric materials. Provision for the process or processes to be used for marking is outside the scope of this practice.
Note 1--Precise details of the marking, for example, the minimum size of the item to be marked, the size of the lettering, and the appropriate location of the marking, may be the subject to agreement between the manufacturer and the user.
1.2 The abbreviated terms used are to provide generic identification of the polymer(s).
1.3 This practice is especially pertinent for use with durable plastic components of products. This practice is not intended to supplant, replace, or in any way interfere with the requirements found in legislation for marking or labeling of packaging.
1.4 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.
Note 2--In many respects, this practice is similar to ISO 11469.
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Designation: D 1972 – 97 An American National Standard
AMERICAN SOCIETY FOR TESTING AND MATERIALS
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Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Practice for
Generic Marking of Plastic Products
This standard is issued under the fixed designation D 1972; 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.
1. Scope * Reinforcing Materials
ISO 1043-3:1988 Plastics—Symbols—Part 3: Plasticizers
1.1 This practice covers a system for uniform marking of
ISO/DIS 1043-4: 1996 Plastics—Symbols—Part 4: Flame
products that have been fabricated from polymeric materials.
Retardants
Provision for the process or processes to be used for marking
ISO 1087:1990 Terminology—Vocabulary
is outside the scope of this practice.
ISO 8604:1988 Plastics—Prepregs—Definition of Terms
NOTE 1—Precise details of the marking, for example, the minimum size
and Symbols for Designations
of the item to be marked, the size of the lettering, and the appropriate
ISO 11469:1993 Plastics—Generic Identification and Mark-
location of the marking, may be the subject to agreement between the
ing of Plastics Products
manufacturer and the user.
1.2 The abbreviated terms used are to provide generic
3. Terminology
identification of the polymer(s).
3.1 Definitions: Definitions are in accordance with Termi-
1.3 This practice is especially pertinent for use with durable
nology D 883 unless otherwise specified.
plastic components of products. This practice is not intended to
3.2 Definitions of Terms Specific to This Standard:
supplant, replace, or in any way interfere with the requirements
3.2.1 abbreviated term—a term resulting from the omission
found in legislation for marking or labeling of packaging.
of any part of a term while designating the same concept. (See
1.4 This standard does not purport to address all of the
ISO 1087.)
safety concerns, if any, associated with its use. It is the
3.2.2 Discussion—88Abbreviated term” is a general term
responsibility of the user of this standard to establish appro-
that includes abbreviations, initialisms, and acronyms (initial-
priate safety and health practices and determine the applica-
isms that can be pronounced as a word). International Standard
bility of regulatory limitations prior to use.
definitions for each of these terms is included in ISO 1087.
3.2.3 bulk molding compound (BMC)—a product composed
NOTE 2—In many respects, this practice is similar to ISO 11469.
of thoroughly mixed resins and chopped reinforcing fibers with
2. Referenced Documents
or without particulate fillers, supplied in mass form, capable of
2.1 ASTM Standards: being molded under heat and pressure. (See ISO 8604.)
D 883 Terminology Relating to Plastics 3.2.4 matrix polymer—the continuous phase in a polymeric
D 1600 Terminology for Abbreviated Terms Relating to blend or alloy.
Plastics 3.2.5 plastic products—articles or stock shapes of plastic
D 3935 Specification for Polycarbonate (PC) Unfilled and materials intended for useful purposes.
Reinforced Material 3.3 Abbreviations—Abbreviated terms used in this practice
D 4000 Classification System for Specifying Plastic Mate- are from Terminology D 1600 and ISO 1043.
rials
4. Significance and Use
2.2 ISO Standards:
ISO 472:1988, Plastics—Vocabulary 4.1 This marking system is to provide assistance in identi-
fication of products for making subsequent decisions as to
ISO/DIS 1043-1:1995, Plastics—Symbols and Abbreviated
Terms—Part 1: Basic Polymers and Their Special Char- handling, recycling, or disposal.
4.2 The system is based on standard abbreviated terms
acteristics
ISO 1043-2:1991 Plastics—Symbols—Part 2: Fillers and relating to plastics published in the ISO 1043 series of
standards and in ASTM D 1600.
4.3 A system for expanded generic marking is described in
This practice is under the jurisdiction of ASTM Committee D-20 on Plastics
nonmandatory Appendix X1.
and is the direct responsibility of Subcommittee D20.95 on Recycled Plastics.
Current edition approved April 10, 1997. Published April 1998. Originally
5. System for Marking Products
published as D 1972 – 91. Last previous edition D 1972 – 94.
Annual Book of ASTM Standards, Vol 08.01.
5.1 Plastic products may be marked at some place on the
Annual Book of ASTM Standards, Vol 08.02.
surface with the abbreviated term(s) set between the punctua-
Available from American National Standards Institute, 11 W. 42nd St., 13th
Floor, New York, NY 10036. tion marks “>” and “<” (greater-than or less-than signs,
*A Summary of Changes section appears at the end of this standard.
D 1972
sometimes referred to as reversed angled brackets). For ex- or:
ample, for products made from acrylonitrile-butadiene-styrene
.PA66 2 ~GF 1 MD!40,
polymer use:
5.4.2 Example 2—For the composition of Example 1 that
.ABS,
also contains red phosphorus as a flame retardant use the
5.2 Products made from polymer blends or alloys may be identification shown as follows. The code for red phosphorus is
marked with the appropriate abbreviated terms for the constitu-
from ISO/DIS 1043-4.
ent polymers that are present in a concentration of more than
.PA66 2 ~GF25 1 MD15! 2 FR~52!,
one percent with the main component of the matrix in first
5.4.3 Example 3—For a BMC with 50 mass percentage of
place followed by the other components in descending order
filler (MD) and 25 mass percentage of glass fibers (GF) use the
according to their mass fractions, separated by one or more
identification:
plus signs and set off as described in 5.1.
5.2.1 Example—For an alloy of polycarbonate and .UP ~MD50 1 GF25!,
acrylonitrile-butadiene-styrene in which the polycarbonate is
5.5 Products that comprise two or more plastic components,
the matrix polymer with the acrylonitrile-butadiene-styrene
some of which are not readily visible, shall be marked so that
being dispersed therein use the identification:
the primary visible material is identified first, by the system
.PC 1 ABS, specified in 5.1, followed by identification of the other mate-
rial(s) with the individual identification(s) separated by a
5.3 Products made from compositions containing
...
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