Standard
Historical
Last Updated: Aug 16, 2017
Track Document
ASTM C338-93(1998)
Standard Test Method for Softening Point of Glass
Standard Test Method for Softening Point of Glass
C0338-93R98
ASTM|C0338-93R98|en-US
Standard Test Method for Softening Point of Glass
Standard
C338 Standard Test Method for Softening Point of Glass>
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BOS Vol. 15.02 Committee C14
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Scope
1.1 This test method covers 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°C/min.
1.2 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use .