olemus
termilise ja/või keemilise töötlusega tugevdatud klaas, mis purunemisel ei tekita suuri kilde

ISO 22752:
glazing material consisting of a single layer of glass which has been subjected to special thermal treatment to increase its mechanical strength and to condition its fragmentation after shatter

ülevaateid
https://en.wikipedia.org/wiki/Tempered_glass

https://ocw.mit.edu/courses/materials-science-and-engineering/3-071-amorphous-materials-fall-2015/lecture-notes/MIT3_071F15_Lecture9.pdf

http://www.lambertgtservices.co.uk/book/TheGlassTemperingHandbook.pdf