This refers to the range at which a glassy material softens and finally melts (crystalline materials melt at a definite temperature, glasses do not). Frit manufacturers quote Fusion temperature and Flow temperatures, this could be considered that range, namely, from where it starts to melt to where it begins to flow.
|Tests||Frit Softening Point|
|Tests||Pyrometric Cone Equivalent|
|Tests||Heating Microscope Analysis for Frits|
Most ceramic glazes contain B2O3 as the main melter. This oxide is supplied by great variety of frits, thousands of which are available around the world.
Test conducted primarily on materials use to make bodies or glazes.