JEB Heat Soak Testing (HST)
The heat soaking process helps to reduce the incidence of spontaneous breakage due to nickel sulfide inclusions and fabrication damage in tempered glass. JE Berkowitz adheres to the recognized international standard EN 14179-1:2005 (HST) for heat soaking in an oven certified by FH Munich. The fully tempered glass is optimally stacked in a chamber of a specially constructed oven. Its temperature is ramped up to 290°C (550°F) for two hours and gradually ramped down. The test is to reduce the probability of nickel sulfide inclusions from spontaneous breakage.
- Offered only in 100% testing
- Reduces probability of breakage from a standard 8 in 1,000 to 5 in 1,000