GB/T 21460.1-2025 Active National standards

GB/T 21460.1-2025 Plastics—Styrene-acrylonitrile(SAN) moulding and extrusion materials—Part 1:Designation system and basis for specifications

Publish Date: 2025-12-02 Implement Date: 2026-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 21460.1-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for synthetic resins and plastics

ICS Name: Thermoplastic plastics

Publish Date: 2025-12-02

Implement Date: 2026-07-01

Pages: 16 pages

Scope

This document specifies a naming system for styrene-acrylonitrile (SAN) thermoplastic materials, which serves as the basis for classification. Different types of SAN plastic materials are distinguished by a classification system based on the values of specified characteristic properties, recommended applications and/or processing methods, important performance characteristics, additives, colorants, fillers, and reinforcing materials, as follows: a) Vicat softening temperature; b) Melt mass flow rate. This document applies to all copolymers of styrene and/or substituted styrene with an acrylonitrile content of 5% to 50%. It applies to materials typically in powder, granular, or crushed form, unmodified or modified with colorants, additives, fillers, etc. This document does not apply to foamed materials. This document does not imply that materials with the same name must have the same performance. It does not provide the engineering data, performance data, or process parameters required to describe the special applications and/or processing methods of the materials. When necessary, these additional properties should be determined using the test methods specified in GB/T 21460.2.