ASTM D4894 PDF

This standard is issued under the fixed designation D ; the number immediately 1 This specification is under the jurisdiction of ASTM Committee D20 on. ASTM A/AM Steel, Sheet and Strip, Heavy-Thickness Coils, Hot- Rolled, Carbon, Commercial, Drawing, Structural, High-Strength Low-Alloy. Astm d – Download as PDF File .pdf), Text File .txt) or read online. PTFE.

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The usual methods of processing thermoplastics generally are not applicable to these materials because of their viscoelastic properties at processing temperatures.

Link to Active This link will always route to the current Active version of the standard. Additional procedures zstm provided in the Appendix for further characterization of the resins.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Historical Version s – view previous versions of standard.

Active view current version of standard. The usual methods of processing thermoplastics generally are not applicable to these materials because of their viscoelastic properties at processing temperatures.

Link to Active This link will always route to the current Active version of the standard. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. The materials included herein do not include mixtures of PTFE resin with additives such as colorants, fillers or plasticizers; nor do they include reprocessed or reground resin or any fabricated articles.

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This abstract is a brief summary of the referenced standard. Additional procedures are provided in the Appendix for further characterization of the resins. The materials included herein do not include mixtures of PTFE resin with additives such as colorants, fillers or plasticizers; nor do they include reprocessed or reground resin or any fabricated articles.

It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. This specification does not purport to address all of the safety concerns, if any, associated with its use.

See Notes 1, 3 and 9 for specific cautionary statements. The methods and properties included are those required to identify the various types of resins.

Included are specimen preparation, test methods and requirements for materials, melting characteristics, bulk density, particle size, water content, standard specific gravity, thermal instability index, and mechanical tensile properties. D Specification for Aqueous Dispersions of Polytetrafluoroethylene.

These PTFE resins are homopolymers of tetrafluoroethylene, or, in some cases, modified homopolymers containing not more than one percent by weight of other fluoromonomers.

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the d494 of regulatory limitations prior to use. These PTFE resins are homopolymers of tetrafluoroethylene, or, in some cases, modified homopolymers containing not more than one percent by weight of other fluoromonomers. These standards have been approved for publication and are in the final editing process.

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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This standard does not purport to address all of the safety concerns, if any, associated with its use. It ast 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. See Notes 3 and 9 for specific cautionary statements.

This specification focuses on granular polytetrafluoroethylene PTFE resins that have never been preformed or molded, and are normally processed by methods similar to those used in powder metallurgy or ceramics, or by special extrusion processes.

The methods and properties included are those required to identify the various types of resins. D Specification for Aqueous Dispersions of Polytetrafluoroethylene.