4 ms·IIRC it has been mentioned that sauce splattering onto the glass at those temps can shatter it.by nazgulnarsil 16y agoIIRC it has been mentioned that sauce splattering onto the glass at those temps can shatter it.ars 16y agoI think that's his worry, not that it actually can happen. Because if it would happen it would happen at 500 degree too.marze 16y agoIt can and does happen at both temperatures.