This document describes the general method for determining the temperature of plastics deflection under load (flexural stress under three-point loading) to evaluate the relative properties of different types of plastic materials when heated to high temperatures at specified rates under specified loads. This document specifies the preferred dimensions of specimens.
Basic Data
Standard ID
GB/T 1634.1-2025 (GB/T1634.1-2025)
Description (Translated English)
Plastics - Determination of temperature of deflection under load - Part 1: General test method
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
G31
Classification of International Standard
83.080.01
Word Count Estimation
14,176
Date of Issue
2025-01-24
Date of Implementation
2025-08-01
Issuing agency(ies)
State Administration for Market Regulation, China National Standardization Administration
