ASTM D6339
Standard Classification System for and Basis for Specifications for Syndiotactic Polystyrene Molding and Extrusion (SPS)
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About This Item
ASTM D6339 is the ASTM standard for the classification system and basis for specifications for syndiotactic polystyrene molding and extrusion (SPS). It provides a technical framework for identifying this polymer material in a consistent way, helping buyers, producers, and users communicate requirements with greater clarity. As a standards document, it supports more reliable product selection, specification writing, and quality-focused purchasing decisions for SPS used in molding and extrusion applications.
Purpose of ASTM D6339
The purpose of this standard is to establish a common classification system and a basis for specifications for syndiotactic polystyrene intended for molding and extrusion. In practice, ASTM D6339 helps organize material designations and related requirements so SPS products can be described and compared more consistently. This is especially useful when technical documents, procurement terms, or product requirements need to align around a single ASTM standard rather than informal material descriptions.
Common use cases of ASTM D6339
This standard is commonly used when specifying or evaluating syndiotactic polystyrene for manufacturing processes such as molding and extrusion. It is relevant in product development, supplier qualification, and material selection workflows where SPS must be identified and referenced with a recognized ASTM designation. ASTM D6339 is also useful for documentation and purchasing teams that need a clear, standardized basis for ordering or reviewing this polymer material.
Why ASTM D6339 matters
ASTM D6339 matters because a consistent classification and specification basis can reduce confusion in technical communication and help support more dependable material control. For organizations working with SPS, it can improve compliance efforts, make product comparisons more straightforward, and strengthen quality control during specification and procurement. Using a recognized standard also helps reduce the risk of mismatched expectations between suppliers and end users.
- Classification system for SPS
- Basis for material specifications
- Molding and extrusion applications
- Supports procurement and documentation
- Helps improve consistency and comparability
- Publication Date: 2019-05-09
- Publisher: ASTM
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