Description / Abstract:
Material Description.
Material Identification.
Marking of Parts. All plastic parts shall be
marked using the latest version of ISO 11469. For example,
polycarbonate would be indicated as follows: PC .
All Parts. Marking is required on all plastic
parts except in cases where fit, function, or appearance is
compromised. Extruded parts are also excluded from this
requirement.
Composite Parts. A molded part that is
manufactured using more than one polymer type shall have the
plastic symbols for each polymer type identified on the part.
Examples of manufacturing using more than one polymer type are
co-injection molding and two-shot molding.
Small Parts. In cases where the letter height
must be smaller than 1.5 mm in order to fit on the part, marking is
not required. For ease of locating for recycling, make the marking
as large as possible without hindering appearance or function.
Relationship to Other Markings. Where possible,
the International Organization for Standardization (ISO) marking
shall be located near the part number, cavity number, molding date,
or other markings on the part. If there is not room near the other
markings, or there are no other markings on the part, then the ISO
marking shall be in an area that can be easily found when the part
is disassembled from the vehicle.
Standard Drawing Notes. Mark all plastic parts
per ISO 11469.
Symbols. A symbol for the general type of
plastic resin is to be used and a letter-number symbol for each
quality level of each property or characteristic. For example, an
automotive interior part might be specified as follows: GMW17081
ABS (DSB83, RE20). Refer to 3.2.1.
Note: While this format provides the means for
characterization and specification of each property and combination
of properties for a broad range of materials, it is subject to
possible misapplications since impossible property combinations can
be coded if the user is not familiar with available commercial
materials.
Applicability. Plastic parts that have
additional requirements beyond the material properties.
Remarks. Plastics should be described in terms
of specific performance characteristics desired in the molded part.
An infinite number of such descriptions can be formulated by the
use of one or more standard statements (based on standard tests)
each designating a quality level of a property or characteristic.
Users of plastic parts can, by selecting different combinations of
performance characteristics, specify different combinations of
properties desired in various parts. This standard provides a
system for specifying significant properties of commonly used
plastics, including unpigmented and pigmented, unfilled and filled
products. It is intended to apply to parts (not resins) used in the
automotive and related industries. It is also intended to be used
either as the sole descriptor of a material or within the body of a
specification covering the common standard characteristics required
where additional specialized requirements are detailed.