ASTM F79-69(2019)

Annotation of standard text ASTM F79-69(2019) :

This specification covers Type 101 sealing glass for use in electronic applications. The glass shall have a finish that ensures smooth, even surfaces and freedom from cracks, checks, bubbles, and other laws of a character detrimental to the strength or life of the component or device for which its use is intended. Different test methods shall be performed in order to determine the following properties of the sealing glass: softening point, annealing point, thermal expansion coefficient, contraction coefficient, and bead seal.


Keywords:
glass, sealing ,, ICS Number Code 21.140 (Seals, glands)