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  4. Granular glass for airtight terminals and component support Compression sealing for airtight terminals (Nippon Electric Glass Co., Ltd.)
Granular glass for airtight terminals and component support Compression sealing for airtight terminals-ST-W/K
Granular glass for airtight terminals and component support Compression sealing for airtight terminals-Nippon Electric Glass Co., Ltd.

Granular glass for airtight terminals and component support Compression sealing for airtight terminals
Nippon Electric Glass Co., Ltd.

About This Product

Granular glass for hermetic terminals is available for compression sealing, in which an iron or stainless steel shell is combined with an iron-nickel, iron-nickel-chrome, or Kovar lead wire, and for matching sealing, in which the shell and lead wire are Kovar. Granular glass for supporting parts has standoffs. Granulated glass made from powdered glass has excellent fluidity and filling properties, making it suitable for tablet molding. Usage example

■Tablet molding

The appropriate molding pressure is 8 to 10 MPa. Tablets formed under this pressure have a porosity of 0.35 to 0.37 and sufficient green strength, and the binder can be easily thermally decomposed during preliminary sintering.

■Preliminary firing

Temporary firing is performed in air. Since the decomposition of the binder starts at 150°C and ends at about 530°C, the heating rate in this temperature range must be 15°C/min or less.

■Sealing

Sealing is performed in nitrogen.

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    Granular glass for airtight terminals and component support Compression sealing for airtight terminals

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1 Models of Granular glass for airtight terminals and component support Compression sealing for airtight terminals

Image Part Number Price (excluding tax) Granule size D99 (μm) Granule size D50 (μm) Applicable Transition point (℃) Softening point (℃) Dielectric constant MHz,25℃ Composition system Thermal expansion coefficient 30~380℃ (×10-7/K) Strain point (℃) Annealing point (℃) Yielding point (℃) Sealing temperature (℃) Density (×10^3kg/m3) Working point (℃) Volume resistivity Log p 350℃ (Ω・cm) Volume resistivity Log p 250℃ (Ω・cm) Volume resistivity Log p 150℃ (Ω・cm) Calcining temperature (℃) Young's modulus (GPa) Boisson ratio Tan δ 1MHz,25℃ (×10-4)
Granular glass for airtight terminals and component support Compression sealing for airtight terminals-Part Number-ST-W/K

ST-W/K

Available upon quote

265

135

Fe,Fe-Ni,Fe-Cr,Fe-Ni-Cr

450

663

6.4

Na2O・BaO・SiO2

95

420

460

510

960

2.6

980

6.9

8.8

11.4

650~660

68

0.21

Twenty two

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About Company Handling This Product

Nippon Electric Glass Co., Ltd.

Company Overview

Nippon Electric Glass Co., Ltd. (NEG) is a glass technology products manufacturer originally founded in 1949 a...

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