GB/T 1634-1979 Test method of heat deflection temperature under bending load for plastics

Standard No.: GB/T 1634-1979
Language: Chinese
Release Date: 1979
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Replace By: GB/T 1634.1-2004; GB/T 1634.2-2004; GB/T 1634.3-2004
Lastest: GB/T 1634.1-2019; GB/T 1634.2-2019; GB/T 1634.3-2004

Scope: This method is to determine the temperature when the plastic sample is immersed in a suitable liquid heat transfer medium that is heated at a constant rate, and under the static bending load of a simply supported beam, the bending deformation of the sample reaches a specified value. This method is suitable for molding materials and plates that are hard at room temperature. The data obtained by this method is suitable for quality control and as an index for identifying the thermal performance of new varieties, but it does not represent its use temperature.

2019 GB/T 1634.1-2019 Plastics—Determination of temperature of deflection under load—Part 1:General test method
2004 GB/T 1634.1-2004 Plastics-Determination of temperature of deflection under load-Part 1:General test method
1979 GB/T 1634-1979 Test method of heat deflection temperature under bending load for plastics

GB/T 1634-1979Test method of heat deflection temperature under bending load for plastics