Technical data of Type DB-438 electronic glass

SJ/T 10588.12-1994 Technical data of DB-438 electronic glass SJ/T10588.12-1994 Standard download decompression password: www.bzxz.net

Electronic Industry Standard of the People's Republic of China
Technical data of type DB-438 electronic glass
Technical data of type DB-438 electronic glassSubject content and scope of application
This standard specifies the chemical composition and physical and chemical performance indicators of DB-438 electronic glass. This standard applies to glass materials used in vacuum devices such as black-and-white cathode ray tubes and indicator tubes. 2
Referenced standards
GB9000
GB9622
Technical requirements
Standard method for chemical analysis of electronic glass
Method for testing chromaticity coordinates of screen glass for color cathode ray tubesMethod for testing transmittance (t546) of screen glass for color cathode ray tubesTest method for physical and chemical properties of electronic glass
Chemical composition is shown in Table 1.
3.2 Physical and chemical performance indicators are shown in Table 2.
Weight percentage
66.81±1.00
3.00±0.15
12.10±0.15
3.35±0.15
5.80±0.20
7.75±0.10
0.60±0.03
Approved by the Ministry of Electronics Industry of the People's Republic of China on August 8, 1994 SJ/T10588.12--94
Test method
GB9000 .10
GB9000.12
1994-12-01 implementation
Indicator name
SJ/T10588.12-94
Average linear thermal expansion coefficient α in the range of 0～300℃Density
Softening point
Annealing point
Strain point
Light transmittance (ts) (%)
Chromaticity coordinates (center value)
Additional notes:
This standard is under the jurisdiction of the Standardization Institute of the Ministry of Electronics Industry. 1/℃bzxz.net
(92.5±0.5)×10-1
2.68±0.01
658±5
460±5
420±5
42.0±1.5
Test method
This standard was drafted by Shijiazhuang Baoshi Electronic Glass Co., Ltd. and the Standardization Institute of the Ministry of Electronics Industry. The main drafters of this standard are Xu Yujuan, Zhao Conghui and Liu Chenggou. 2
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