Does the stress manifest the same way as heat-stress on glass?
this is due to relatively high coefficient of expansion on heating, versus the low overall heat conductivity.
borosilicate glass is therefore used in laboratory glassware, since it has a much lower coefficient of expansion.
when i look at the chemistry of this, it seems that to improve heat stress,
stuff is added to the glass that has negative coefficient of expansion, and this relieves
the overall expansion stresses.
