
Standard Test Method for Softening Point of Glass
出版:American Society for Testing and Materials

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CONTAINED IN VOL. 15.02, 2017 Defines the determination of the softening point of a glass by determining the temperature at which a round fiber of the glass, nominally 0.65 mm in diameter and 235 mm long with specified tolerances, elongates under its own weight at a rate of 1 mm/min. when the upper 100 mm of its length is heated in a specified furnace at the rate of 5 +/-1 degrees C/min.
UNE 43701 : 1974 - Identical