GB/T 1633-2025 Active National standards

GB/T 1633-2025 Plastics—Thermoplastic materials—Determination of Vicat softerning temperature(VST)

GB/T 1633-2025 Plastics—Thermoplastic materials—Determination of Vicat softerning temperature(VST)

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 1633-2025

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: Plastic Composite

Publish Date: 2025-12-02

Implement Date: 2026-07-01

Pages: 20 pages

Scope

This document describes four methods for determining the Vicat softening temperature (VST) of thermoplastic materials: — Method A50: Load of 10 N, heating rate of 50 °C/h; — Method B50: Load of 50 N, heating rate of 50 °C/h; — Method A120: Load of 10 N, heating rate of 120 °C/h; — Method B120: Load of 50 N, heating rate of 120 °C/h. The four methods specified in this document are only applicable to thermoplastic plastics, and the measured temperature is the temperature at which thermoplastic plastics rapidly soften.

Development Information

Word Count: 21 Thousand words Pages: 20 pages

Replace the following standards

GB/T 1633-2000 Plastics—Thermoplastic materials—Determination of Vicat softening temperature(VST)

Referenced Standards

GB/T 2035-1996 Terms and definitions for plastics GB/T 2035-2008 Terms and definitions for plastics GB/T 2035-2024 Plastics—Vocabulary GB/T 2918-1998 Plastics—Standard atmospheres for conditioning and testing GB/T 2918-2018 Plastics—Standard atmospheres for conditioning and testing GB/T 4990-1995 Alloy wires of extension and compensating cables for thermocouples GB/T 4990-2010 Alloy wires of extension and compensating cables for thermocouples GB/T 9352-1988 Plastics—Compression moulding test specimens of thermoplastic materials GB/T 9352-2008 Plastic—Compression moulding of test specimens of thermoplastic materials GB/T 16839.1-1997 Thermocouples—Part 1:Reference tables GB/T 16839.1-2018 Thermocouples—Part 1:EMF specifications and tolerances GB/T 17037.1-1997 Injection moulding of test specimens of thermoplastic materials—Part 1:General principles and moulding of multipurpose and bar test specimens GB/T 17037.1-2019 Plastics—Injection moulding of test specimens of thermoplastic materials—Part 1:General principles,and moulding of multipurpose and bar test specimens GB/T 17037.2-2020 Plastics—Injection moulding of test specimens of thermoplastic materials—Part 2:Small tensile bars GB/T 17037.3-2003 Plastics—Injection moulding of test specimens of thermoplastic materials—Part 3:Small plates GB/T 30121-2013 Industrial platinum resistance thermometers and platinum temperature sensors GB/T 37426-2019 Plastics—Test specimens GB/T 39812-2021 Plastics—Preparation of test specimens by machining GB/T 44535-2024 Plastics—Determination of linear dimensions of test specimens

Adopt standards

ISO 306:2022

Related Standards

GB/T 12000-1989 Replaced

GB/T 12000-1989 Plastics—Test methods of exposure to damp heat, steady state

Publish Date: 1989-12-25

GB/T 15585-1995 Abolished

GB/T 15585-1995 Determination of shrinkage for injection moulding thermoplastics

Publish Date: 1995-06-12

GB/T 15596-1995 Replaced

GB/T 15596-1995 Plastics—Determination of changes in Color and variations in properties after exposure to daylight under glass, natural weathering or artificial light

Publish Date: 1995-06-12

GB/T 15598-1995 abolished_transferred

GB/T 15598-1995 Testing methods for shear strength of plastics by punch tool

Publish Date: 1995-06-12

GB/T 1843-1996 Replaced

GB/T 1843-1996 Plastics—Determination of izod impact strength

Publish Date: 1996-06-14

GB/T 2035-1996 Replaced

GB/T 2035-1996 Terms and definitions for plastics

Publish Date: 1996-06-14