Overview
ISO 19064-1:2015 is an international standard developed by ISO that establishes a designation system for styrene/acrylonitrile (SAN) moulding and extrusion plastics. This designation system provides a structured basis for specifications and allows clear differentiation between types of SAN materials based on key properties and composition. Applicable to SAN copolymers containing 5% to 50% acrylonitrile, the standard covers both unmodified and modified materials (including those with additives, colorants, fillers, or reinforcements) but excludes expandable materials.
This standard replaces the earlier ISO 4894-1:1997 and aims to simplify identification and specification practices in industries using SAN thermoplastics. While it establishes a consistent classification framework, ISO 19064-1:2015 does not provide detailed engineering, performance, or processing data, which are addressed in related standards.
Key Topics
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Designation System Structure:
The standard uses a multi-block format to describe SAN materials, with each data block conveying important aspects:
- Data Block 1: Identifies plastic type (SAN) and acrylonitrile content range.
- Data Block 2: Details fillers/reinforcing materials and their nominal content.
- Data Block 3: Indicates intended application, processing method, additives, and supplementary information.
- Data Block 4: Shows designatory properties including Vicat softening temperature and melt mass-flow rate.
- Data Block 5 (Optional): Includes extra requirements for precise specification.
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Key Designatory Properties:
- Vicat Softening Temperature ranges are coded to classify heat resistance capabilities.
- Melt Mass-Flow Rate (MFR) indicates flow characteristics under specified test conditions, essential for process control.
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Classification of Composition and Additives:
Acrylonitrile content is divided into three code ranges, and fillers/reinforcements are coded by type and form (e.g., boron powder, glass fibers). This enables tailored classification of SAN plastics for varied applications.
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Usage of Codes for Processing and Additives:
Specific code letters represent processing stabilization, coloring, antiblocking agents, etc., facilitating clear communication of material attributes.
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Exclusions and Limitations:
The standard excludes expandable materials and does not guarantee identical performance for materials sharing the same designation.
Applications
ISO 19064-1:2015 is primarily used by manufacturers, material suppliers, designers, and quality assurance teams working with SAN thermoplastics to:
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Ensure Consistent Material Identification:
Using the standardized designation system helps avoid ambiguity in sourcing, ordering, and inventory management of SAN plastic materials.
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Support Specification Development:
The classification enables creating material specifications aligned with product requirements, especially in injection moulding, extrusion, and other processing methods.
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Facilitate Communication Between Stakeholders:
Clear, codified descriptions of SAN materials streamline collaboration between producers and users across industries such as automotive, electrical, consumer goods, and packaging.
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Improve Quality Control and Compliance:
Applying this ISO standard ensures traceability and adherence to internationally recognized benchmarks during production and testing stages.
Related Standards
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ISO 1043-1 & ISO 1043-2: Defines symbols and abbreviated terms for polymers and fillers, which ISO 19064-1 references for plastic and filler identification.
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ISO 4894-2: Specifies methods for preparation of test specimens and determination of physical properties such as Vicat softening temperature and melt mass-flow rate relevant to SAN materials.
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ISO 11469: Provides general guidelines for polymer material marking, which complements the designation system in ISO 19064-1.
Keywords: ISO 19064-1, styrene/acrylonitrile plastics, SAN moulding materials, SAN extrusion materials, designation system, acrylonitrile content, Vicat softening temperature, melt mass-flow rate, plastic classification, thermoplastic standards, ISO plastics standards, fillers and reinforcing materials, plastic specifications, SAN copolymers.