Technical data of Type DB-471 electronic glass

SJ/T 10588.18-1994 DB-471 electronic glass technical data SJ/T10588.18-1994 standard download decompression password: www.bzxz.net

Electronic Industry Standard of the People's Republic of China
Technical data of type DB-471 electronic glass
Technical dataof type DB-471 electronic glass Subject content and scope of application
This standard specifies the chemical composition and physical and chemical performance indicators of DB-471 electronic glass. This standard is applicable to glass materials used in electronic devices such as black-and-white picture tubes and indicator tubes. 2 Reference standards
Standard method for chemical analysis of electronic glass
GB9000
GB9622
Test method for physical and chemical properties of electronic glass
Technical requirements
Chemical composition is shown in Table 1.
Chemical composition
Weight percentage
67.5±1.0
12.0±0.5
Note: 1) Fe:O, as an impurity control, is not included in the percentage composition. SJ/T10588.18-94 approved by the Ministry of Electronics Industry of the People's Republic of China on August 8, 1994 to replace SJ682-83. Test method GB9000.11 GB9000.10 GB9000.14 Implementation on December 1, 1994 See Table 2 for physical and chemical performance indicators Index name SJ/T10588.18-94 Average linear thermal expansion coefficient α within the range of 0~300C Density Softening point Annealing point Strain point Dielectric loss at frequency 6MHz and temperature 20℃ Tangent value tgox104
Volume resistivity at 350C 1gp
Thermal stability
Water resistance chemical stability levelwwW.bzxz.Net
(92.0±2.0)×10-1
2.590±0.015
650±10
460±10
420±10
Test method
GB9622.8t)
GB9622.11
Note: 2) Articles 4.5 and 4.6 are combined and carried out as follows: The measurement starts from the starting point, keeps the temperature at 300℃ for 10min, starts the measurement, continues to rise, and measures once every 10℃ rise until the measurement ends at 390℃. Additional remarks:
This standard is under the jurisdiction of the Standardization Research Institute of the Ministry of Electronics Industry. This standard was drafted by the 773rd Factory and the Standardization Institute of the Ministry of Electronics Industry. The main drafters of this standard are Ge Rongtian, Su Mei, Liu Guangquan and Liu Chengjun. This standard was first issued in 1973 and revised for the second time on August 8, 1994.
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