ASTM D6778-03 - 1.11.2003
 
1. Scope

1.1 This classification covers polyoxymethylene materials suitable for molding and extrusion. This specification allows for the use of polyoxymethylene plastic materials that are recycled, reconstituted, recycled-regrind, recovered, or reprocessed, or combination thereof, provided that the requirements as stated in this specification are met. It is the responsibility of the supplier and the buyer of recycled, reconstituted, recycled-regrind, recovered, or reprocessed polyoxymethylene plastic materials, or combination thereof, to ensure compliance. (See Guide D 5033).

1.2 The properties included in this classification 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 and subsequent line callout 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 field of plastics design 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 classification.

1.4 The values stated in SI units are to be regarded as the standard.

1.5 The following precautionary caveat pertains only to the test method portion, Section 11, of this classification. 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 requirements prior to use.

Note 1—This classification is similar to ISO 9988-1 and 9988-2, although the technical content is significantly different.

 
2. Referenced Documents

D618-21

Standard Practice for Conditioning Plastics for Testing

D883-26a

Standard Terminology Relating to Plastics (Includes all amendments and changes 6/15/2026).

D4000-23

Standard Classification System for Specifying Plastic Materials

D5630-22

Standard Test Method for Ash Content in Plastics

D7209-06

Standard Guide for Waste Reduction, Resource Recovery, and Use of Recycled Polymeric Materials and Products (Withdrawn 2015)

D1600-18

Standard Terminology for Abbreviated Terms Relating to Plastics (Withdrawn 2024)

D3892-15(2020)

Standard Practice for Packaging/Packing of Plastics

D6100-25

Standard Specification for Extruded, Compression Molded and Injection Molded Polyoxymethylene Shapes (POM)

E29-22

Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

ISO 75-1

Plastics--Determination of Temperature of Deflection under Load--Part 1: General Test Method

ISO 179-1

Plastics--Determination of Charpy Impact Properties--Part 1: Non-instrumented Impact Test

ISO 294-1

Plastics--Injection Moulding of Test Specimens of Thermoplastic Materials--Part 1: General Principles, and Moulding of Multipurpose and Bar Test Specimens

ISO 527-1

Plastics--Determination of Tensile Properties--Part 1: General Principals

ISO 75-2

Plastics--Determination of Temperature of Deflection under Load--Part 2: Plastics and Ebonite

ISO 527-2

Plastics--Determination of Tensile Properties--Part 2: Test Conditions for Moulding and Extrusion Plastics

ISO 1133

Plastics--Determination of the Melt-Mass Flow Rate (MFR) and the Melt Volume-Flow Rate (MVR) of Thermoplastics

ISO 11357-3

Plastics--Differential Scanning Calorimetry (DSC)--Part 3: Determination of Temperature and Enthalpy of Melting and Crystallization

ISO 1183

Plastics--Methods for Determining the Density of Non-Cellular Plastics--Part 1: Immersion Method, Liquid Pyknometer and Titration Method

ISO 3451-1

Plastics--Determination of Ash--Part 1: General Methods

ISO 9988-1

Plastics--Polyoxymethylene (POM) Moulding and Extrusion Materials--Part 1: Designation System and Basis for Specifications

ISO 9988-2

Plastics--Polyoxymethylene (POM) Moulding and Extrusion Materials--Part 2: Preparation of Test Specimens and Determination of Properties

ISO 20753

Plastics--Test Specimens