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GLOSSARY OF TERMS
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H:
Heat-Absorbing Glass
Glass that absorbs a significant amount of solar energy.
Heat-Resisting Glass
Glass able to withstand high thermal shock, usually because of its low coefficient of expansion.
Heat-Strengthened Glass
Flat or bent glass that has been heat-treated to a specific surface and edge compression to meet the requirements of ASTM C 1048. Heat-strengthened glass is approximately two times as strong as annealed glass of the same thickness. Heat-strengthened glass is not considered safety glass, because it will not dice like fully tempered glass.
Heat-Treated
Term used for both fully tempered glass and heat-strengthened glass.
Hot End
Those manufacturing operations dealing with hot glass, which are melting, forming, and annealing.
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