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ASTM D6778-06

(Classification)

Standard Classification for Polyoxymethylene (POM, Acetal) Molding and Extrusion Materials

Standard Classification for Polyoxymethylene (POM, Acetal) Molding and Extrusion Materials

ABSTRACT
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. Test specimens shall be molded by injection molding and all test pieces shall be tested as molded and conditioned in the standard laboratory atmosphere. The mechanical properties of the unreinforced and reinforced, filled, or lubricated polyoxymethylene materials shall be determined and shall conform to the following requirements: flow rate; melting point; tensile strength; tensile modulus; Charpy impact resistance; and deflection temperature.
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 .
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.
The following precautionary caveat pertains only to the test method portion, Section , 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.

General Information

Status
Historical
Publication Date
31-Oct-2006
ICS
83.140.01 - Rubber and plastics products in general
Technical Committee
D20 - Plastics
Drafting Committee
D20.15 - Thermoplastic Materials
Current Stage
Ref Project

Relations

Replaces
ASTM D6778-05 - Standard Classification for Polyoxymethylene (POM, Acetal) Molding and Extrusion Materials
Effective Date
01-Nov-2006
Replaced By
ASTM D6778-12 - Standard Classification System and Basis for Specification for Polyoxymethylene Molding and Extrusion Materials (POM)
Effective Date
01-May-2012
Referred By
ASTM D4000-23 - Standard Classification System for Specifying Plastic Materials
Effective Date
01-Nov-2006
Referred By
ASTM D955-21 - Standard Test Method of Measuring Shrinkage from Mold Dimensions of Thermoplastics
Effective Date
01-Nov-2006
Referred By
ASTM D6100-17 - Standard Specification for Extruded, Compression Molded and Injection Molded Polyoxymethylene Shapes (POM)
Effective Date
01-Nov-2006

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ASTM D6778-06 - Standard Classification for Polyoxymethylene (POM, Acetal) Molding and Extrusion MaterialsASTM D6778-06 - Standard Classification for Polyoxymethylene (POM, Acetal) Molding and Extrusion Materials
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ASTM D6778-06 - Standard Classification for Polyoxymethylene (POM, Acetal) Molding and Extrusion Materials
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D6778 – 06
Standard Classification for
Polyoxymethylene (POM, Acetal) Molding and Extrusion
1
Materials
This standard is issued under the fixed designation D6778; 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.
although the technical content is significantly different.
1. Scope*
1.1 This classification covers polyoxymethylene materials
2. Referenced Documents
suitable for molding and extrusion. This specification allows
2
2.1 ASTM Standards:
for the use of polyoxymethylene plastic materials that are
D618 Practice for Conditioning Plastics for Testing
recycled, reconstituted, recycled-regrind, recovered, or repro-
D883 Terminology Relating to Plastics
cessed, or combination thereof, provided that the requirements
D1600 Terminology for Abbreviated Terms Relating to
as stated in this specification are met. It is the responsibility of
Plastics
the supplier and the buyer of recycled, reconstituted, recycled-
D3641 Practice for Injection Molding Test Specimens of
regrind, recovered, or reprocessed polyoxymethylene plastic
Thermoplastic Molding and Extrusion Materials
materials, or combination thereof, to ensure compliance. (See
D3892 Practice for Packaging/Packing of Plastics
Guide D5033).
D4000 Classification System for Specifying Plastic Materi-
1.2 The properties included in this classification are those
als
required to identify the compositions covered. There may be
D5033 Guide for Development of ASTM Standards Relat-
other requirements necessary to identify particular character-
3
ing to Recycling and Use of Recycled Plastics
istics important to specialized applications. These may be
D6100 Specification for Extruded, Compression Molded
specified by using the suffixes as given in Section 5.
and Injection Molded Polyoxymethylene Shapes (POM)
1.3 This classification and subsequent line callout are in-
E29 Practice for Using Significant Digits in Test Data to
tended to provide a means of calling out plastic materials used
Determine Conformance with Specifications
inthefabricationofenditemsorparts.Itisnotintendedforthe
4
2.2 ISO Standards:
selection of materials. Material selection should be made by
ISO 75-1 Plastics and Ebonite—Determination of Tempera-
those having expertise in the field of plastics design after
ture of Deflection under Load—Part 1: General Test
careful consideration of the design and the performance
Methods
required of the part, the environment to which it will be
ISO 75-2 Plastics—Determination of Temperature of De-
exposed, the fabrication process to be employed, the costs
flection under Load—Part 2: Plastics and Ebonite
involved, and the inherent properties of the material other than
ISO 179-1 Plastics—Determination of Charpy Impact
those covered by this classification.
Properties—Part 1: Non-instrumented Impact Test
1.4 The values stated in SI units are to be regarded as the
ISO 294-1 Plastics—Injection Moulding OfTest Specimens
standard.
Of Thermoplastic Materials—Part 1: General Principles,
1.5 The following precautionary caveat pertains only to the
and Moulding of Multipurpose and Bar Test Specimens
test method portion, Section 11, of this classification. This
ISO 527-1 Plastics—Determination of Tensile Properties—
standard does not purport to address all of the safety concerns,
Part 1: General Principals
if any, associated with its use. It is the responsibility of the user
ISO 527-2 Plastics—Determination of Tensile Properties—
of this standard to establish appropriate safety and health
Part 2: Test Conditions for Moulding and Extrusion
practicesanddeterminetheapplicabilityofregulatoryrequire-
Plastics
ments prior to use.
NOTE 1—This classification is similar to ISO 9988-1 and 9988-2,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contactASTM Customer Service at service@astm.org. ForAnnual Book ofASTM
1
This classification is under the jurisdiction of ASTM Committee D20 on Standards volume information, refer to the standard’s Document Summary page on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic the ASTM website.
3
Materials. Withdrawn. The last approved version of this historical standard is referenced
Current edition approved Nov. 1, 2006. Published November 2006. Originally on www.astm.org.
4
approved in 2002. Last previous edition approved in 2005 as D6778 - 05. DOI: Available from American National Standards Institute, 25 W. 43rd St., 4th
10.1520/D6778-06. Floor, New York, NY 10036.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700,
...

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1.1 This specification covers a type of plastic lumber product, defined as polyethylene-based structural-grade plastic lumber (SGPL), for use as main framing members, including joists, stringers, beams, columns; and secondary framing members, including planking, posts and bracing; in outdoor structures such as decks, boardwalks, docks, and platforms.  
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1.8 Diverse and multiple combinations of both virgin and recycled polyethylene material systems are permitted in the manufacture of SGPL products.  
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1.14 Products that fail at strains of less than 0.02 (2 %) when tested in flexure in accordance with 6.6 are not compatible with the underlying assumptions of Annex A1 and are beyond the scope of this standard (see Note 1).
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4.1.1 Fig. 1 and Table 1 present the appropriate information on the way the RIC is to be incorporated onto the product and the available resin identification designations.
FIG. 1 Example of a Resin Identification Marker  
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5.1 The impact strength of PVC profiles relates to suitability for service and to quality of processing. Impact tests are used for quality-control purposes and as an indication that products can withstand handling during assembling, installation, or in service.  
5.2 Results obtained by use of this test method are used in two ways:  
5.2.1 As the basis for establishing impact-test requirements in product standards, and  
5.2.2 To measure the effect of changes in materials or processing.
SCOPE
1.1 This test method covers the determination of the energy required to crack or break rigid poly(vinyl chloride) (PVC) profile under specified conditions of impact by means of a falling weight.  
1.2 This test method is used either by itself or in conjunction with other methods for measuring PVC product toughness.  
1.3 Because of the wide variety of profile sizes and shapes and the wide variety of manufacturing procedures and field abuse, this test method does not correlate universally with all types of abuse. Therefore, correlations must be established as needed.  
1.4 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this standard.  
1.5 The values stated in inch-pound units are to be regarded as the standard.  
1.6 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.
Note 1: There is no known ISO equivalent to this standard.  
1.7 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.

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ASTM
ASTM D8366-21a(Specification)
Standard Specification for Extruded and Compression Molded Shapes Made from Unfilled Poly(Vinylidene Fluoride) PVDF

SCOPE
1.1 This specification covers the requirements and test methods for the material, dimensions, workmanship, and the properties of extruded sheet, rod and tubular bar manufactured from unfilled PVDF.  
1.2 This specification covers the requirements and test methods for the material, dimensions, workmanship, and the properties of extruded and compression molded shapes manufactured from unfilled PVDF.  
1.3 The properties included in this specification are those required for shapes made from PVDF polymers. Requirements necessary to identify particular characteristics of the shape are included in Section 5.  
1.4 This specification allows for the use of up to 20 % process regrind and reprocessed plastic, total, and of uncontaminated quality.  
1.5 The values stated in English Units are to be regarded as the standard in all property and dimensional tables. For reference purposes, SI units are also included.  
1.6 The following safety hazards caveat pertains only to the test method or test methods described in this specification. 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.  
1.7 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.

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