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- ASTM C338 Softening Point of Glass
- KS L 2504 Glass-Viscosity and viscometric fixed points－Part 6：Determination of softening point
- JIS R 3103 Viscosity and viscometric fixed point of glass – Determination of softening point
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.
More than 2 pieces of 10cm(L) x 10cm(W) x 0.5cm(H), Approx. 250g
The lowest working temperature
