ASTM D4894
Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials
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About This Item
ASTM D4894 is the ASTM standard specification for polytetrafluoroethylene (PTFE) granular molding and ram extrusion materials. It provides a technical reference for these PTFE material forms, helping buyers, engineers, and quality teams evaluate whether the material is suited for intended processing and end use. By defining a clear specification framework, the standard supports more consistent material selection, procurement, and comparison across PTFE products.
Purpose of ASTM D4894
The purpose of ASTM D4894 is to establish specification requirements for PTFE granular materials intended for molding and ram extrusion. As a product-focused ASTM standard, it helps define the technical basis for identifying and assessing materials used in these processing methods. This is useful when consistency, traceability, and conformity to a recognized standard are important in specification writing, purchasing, or quality control. ASTM D4894 is commonly used as a reference point for material acceptance and technical communication.
Common use cases of ASTM D4894
This standard is commonly used when PTFE granular molding or ram extrusion materials are being selected, reviewed, or ordered for manufacturing. It supports workflows where material properties and form must align with a defined specification before processing begins. ASTM D4894 is relevant in procurement documents, supplier qualification, incoming inspection, and product evaluation. It is especially useful when PTFE materials need to be identified clearly for applications that rely on controlled processing and consistent material performance.
Why ASTM D4894 matters
ASTM D4894 matters because it gives organizations a recognized way to specify PTFE granular molding and ram extrusion materials with greater confidence. Using a standard specification can reduce ambiguity between suppliers and users, improve consistency in purchasing decisions, and support quality control efforts. It also helps reduce risk when confirming that a PTFE material matches the intended processing method and technical requirements. For many teams, ASTM D4894 serves as a practical reference for compliance and product evaluation.
- PTFE granular material specification
- Molding and ram extrusion applications
- Procurement and supplier review
- Quality control and acceptance checks
- Standardized technical reference
- Publication Date: 2024-06-04
- Publisher: ASTM
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