GB/T 5470-2008 (English Version) Plastics.Determination of the brittleness temperature by impact

Standard No.: GB/T 5470-2008
Language: Chinese, Available in English version
Release Date: 2008
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 5470-2008
Replace: GB/T 5470-1985

Scope: This standard specifies the method for determining the temperature at which non-rigid plastics are brittle and damaged under specific impact conditions at standard ambient temperatures. According to the different types of testing machine and sample, it is divided into two methods, namely: method A using type A testing machine and type A sample; method B using type B testing machine and type B sample. This standard uses statistical methods to obtain the embrittlement temperature. Since the embrittlement temperature is to be calculated on a statistical basis, sufficient samples need to be prepared. Statistical techniques have been used to determine the embrittlement temperature as defined in 3.1. This standard determines the embrittlement temperature when the sample failure rate is 50%. This standard is more useful for formulating material specifications without having to determine the minimum service temperature of the material. When used in material specifications, the measurement accuracy of the measured value is not greater than ±5°C.

GB/T 5470-2008 Referenced Document

ASTM D746-07 Standard Test Method for Brittleness Temperature of Plastics and Elastomers by Impact*， 2023-12-08 Update
GB/T 11547-2008 Plastic.Methods of test for the determination of the effects of immersion in liquid chemicals*， 2008-09-04 Update
GB/T 2918-1998 Plastics--Standard atmospheres for conditioning and testing

2008 GB/T 5470-2008 Plastics.Determination of the brittleness temperature by impact
1985 GB/T 5470-1985 Test method for brittleness temperature of plastics by impact