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Spontaneous shattering of Pyrex pan - wth?
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 2014-03-10 8:50 PM |
Elite  3972      Reno |  Subject: Spontaneous shattering of Pyrex pan - wth?I used my trusty glass baking pan to roast veggies last night. I have had it for a decade or more, and use it frequently. The pan was the last to be washed, and had completely cooled down. After some scrubbing, Mr. Booty decided to leave it overnight to soak. It alone was left in the sink with soapy water. Hours later, when we were in bed asleep, it shatters. Mr. Booty shot out of bed expecting to do battle with an intruder, to only find a broken pan in the sink. I should have taken a photo of the pieces in the sink. What could have happened? |
| 2014-03-10 9:01 PM in reply to: bootygirl |
Elite 5145 Cleveland | Subject: RE: Spontaneous shattering of Pyrex pan - wth? Doing a quick Google search of this, it seems that this is not all that uncommon, although I've never heard of it before. |
| 2014-03-10 9:28 PM in reply to: cgregg |
Elite 3972 Reno | Subject: RE: Spontaneous shattering of Pyrex pan - wth? Originally posted by cgregg Doing a quick Google search of this, it seems that this is not all that uncommon, although I've never heard of it before. . Why so it is. They replaced borosilicate glass with tempered soda lime glass. I'll replace it with metal, I think. |
| 2014-03-11 8:58 AM in reply to: 0 |
Pro 6838 Tejas | Subject: RE: Spontaneous shattering of Pyrex pan - wth? I had one of them explode a few years back while pulling the Christmas ham out of the oven. All of the side dishes were sitting on the stove or kitchen island waiting to go on the table. I pulled the ham from the oven and as soon as the juice from the ham leaked out of the foil onto the dish , it blew up! It was quite the mess as you can imagine. Everything had glass in it and had to be tossed. We had Chinese take out that year. Edit to add -http://beginnertriathlete.com/discussion/forums/thread-view.asp?tid=142798&posts=11#M1874833 . Edited by mdg2003 2014-03-11 9:04 AM |
| 2014-03-11 9:54 AM in reply to: mdg2003 |
Elite 3972 Reno | Subject: RE: Spontaneous shattering of Pyrex pan - wth? Originally posted by mdg2003 I had one of them explode a few years back while pulling the Christmas ham out of the oven. All of the side dishes were sitting on the stove or kitchen island waiting to go on the table. I pulled the ham from the oven and as soon as the juice from the ham leaked out of the foil onto the dish , it blew up! It was quite the mess as you can imagine. Everything had glass in it and had to be tossed. We had Chinese take out that year. Edit to add -http://beginnertriathlete.com/discussion/forums/thread-view.asp?tid=142798&posts=11#M1874833 . . We were lucky it was in the sink, contained. It still puzzles me that it exploded while just sitting there, no big temp changes, just the dish water going to room temperature. I hope no one was hurt at your house! |
| 2014-03-11 10:01 AM in reply to: bootygirl |
Elite 4344 | Subject: RE: Spontaneous shattering of Pyrex pan - wth? Originally posted by bootygirl I used my trusty glass baking pan to roast veggies last night. I have had it for a decade or more, and use it frequently. The pan was the last to be washed, and had completely cooled down. After some scrubbing, Mr. Booty decided to leave it overnight to soak. It alone was left in the sink with soapy water. Hours later, when we were in bed asleep, it shatters. Mr. Booty shot out of bed expecting to do battle with an intruder, to only find a broken pan in the sink. I should have taken a photo of the pieces in the sink. What could have happened? What is odd about your experience is the time delay. The explosive effect is due to thermal stress. The energy to explode goes away when the plate comes to uniform temperature. This has to be something else. I'm going to go with aliens. (Actually, the plate can have residual stresses from manufacturing so that it has stored stress energy at room temperature. It was vulnerable to breakage at any tme. There must have been a crack that slowly propagated to the critical size and then it popped. But aliens makes a better story. Let's go with that.) TW |
| 2014-03-11 10:06 AM in reply to: tech_geezer |
Alpharetta, Georgia Bronze member | Subject: RE: Spontaneous shattering of Pyrex pan - wth? I had one crack into pieces but it was my own fault and slightly embarrassing. We went out to dinner that night. |
| 2014-03-11 1:11 PM in reply to: mdg2003 |
Regular 5477 LHOTP | Subject: RE: Spontaneous shattering of Pyrex pan - wth? Originally posted by mdg2003 I had one of them explode a few years back while pulling the Christmas ham out of the oven. All of the side dishes were sitting on the stove or kitchen island waiting to go on the table. I pulled the ham from the oven and as soon as the juice from the ham leaked out of the foil onto the dish , it blew up! It was quite the mess as you can imagine. Everything had glass in it and had to be tossed. We had Chinese take out that year. Edit to add -http://beginnertriathlete.com/discussion/forums/thread-view.asp?tid=142798&posts=11#M1874833 . That would SUCK! ----- Mary, that is just weird. alien theory, +1 |
| 2014-03-11 1:16 PM in reply to: 0 |
Champion 7704 Williamston, Michigan | Subject: RE: Spontaneous shattering of Pyrex pan - wth? ACK glad to hear it was contained. I had a pizza stone explode in the oven. Threw the other one out after that. Edited by Socks 2014-03-11 1:17 PM |
| 2014-03-11 2:14 PM in reply to: Socks |
Champion 16151 Checkin' out the podium girls | Subject: RE: Spontaneous shattering of Pyrex pan - wth? I'd wager you had a small scratch in it. That scratch will dissipate heat at a different rate than the rest of the dish. The surrounding glass will either expand or contract causing the scratch to try and "fold". Imagine if you had a crease in paper and laid it flat, then pulled both sides; it would tear at the "scratch" or, in the case of the pyrex, shatter. |
| 2014-03-11 2:37 PM in reply to: bootygirl |
Science Nerd 28760 Redwood City, California | Subject: RE: Spontaneous shattering of Pyrex pan - wth? Originally posted by bootygirl Originally posted by cgregg Doing a quick Google search of this, it seems that this is not all that uncommon, although I've never heard of it before. . Why so it is. They replaced borosilicate glass with tempered soda lime glass. I'll replace it with metal, I think. I hate this change. If you shop thrift stores and yard sales, you can find the old stuff. It has a slightly different color. Or shop at lab supply stores. |
| 2014-03-11 3:29 PM in reply to: Artemis |
Elite 4344 | Subject: RE: Spontaneous shattering of Pyrex pan - wth? Originally posted by Artemis Originally posted by bootygirl Originally posted by cgregg Doing a quick Google search of this, it seems that this is not all that uncommon, although I've never heard of it before. . Why so it is. They replaced borosilicate glass with tempered soda lime glass. I'll replace it with metal, I think. I hate this change. If you shop thrift stores and yard sales, you can find the old stuff. It has a slightly different color. Or shop at lab supply stores. You can also buy Simax cookware. http://www.simax.com It is borosilicate glass. It is available through Amazon and other retailers.
TW |
| 2014-03-11 4:16 PM in reply to: tech_geezer |
| Deep in the Heart of Texas | Subject: RE: Spontaneous shattering of Pyrex pan - wth? I've blown up two pyrex pans and have a burn scar between my toes to prove it. First time, I tried to clean it before cooling. Second time, I was adding room temp beer to a pork shoulder - luckily I was able to save the pork shoulder. |
| 2014-03-11 9:22 PM in reply to: switch |
Elite 3972 Reno | Subject: RE: Spontaneous shattering of Pyrex pan - wth? Originally posted by switch Originally posted by mdg2003 I had one of them explode a few years back while pulling the Christmas ham out of the oven. All of the side dishes were sitting on the stove or kitchen island waiting to go on the table. I pulled the ham from the oven and as soon as the juice from the ham leaked out of the foil onto the dish , it blew up! It was quite the mess as you can imagine. Everything had glass in it and had to be tossed. We had Chinese take out that year. Edit to add -http://beginnertriathlete.com/discussion/forums/thread-view.asp?tid=142798&posts=11#M1874833 . That would SUCK! ----- Mary, that is just weird. alien theory, +1 I am going with ghosts..... |
| 2014-03-11 9:30 PM in reply to: pitt83 |
Pro 5755 | Subject: RE: Spontaneous shattering of Pyrex pan - wth? Originally posted by pitt83 I'd wager you had a small scratch in it. That scratch will dissipate heat at a different rate than the rest of the dish. The surrounding glass will either expand or contract causing the scratch to try and "fold". Imagine if you had a crease in paper and laid it flat, then pulled both sides; it would tear at the "scratch" or, in the case of the pyrex, shatter. I was going to say the same thing, small scratches. We used to have this happen in the lab, or sometimes you'd autoclave some media in a pyrex flask and it would shatter. |
| 2014-03-12 8:45 AM in reply to: BrianRunsPhilly |
Extreme Veteran 645 Media, PA | Subject: RE: Spontaneous shattering of Pyrex pan - wth? If you still have the pieces, check along the broken edges with a magnifying glass. You may see changes in the surface texture, like a smoother section near the edge, then rougher for the rest. Not sure if this will happen with glass, but with metal failure, if there were fatigue cracks before the failure, that would be the smooth section. The rough section is where it failed completely. The fatigue cracks start with a scratch or chip, then when they finally get big enough, or some larger stress hits it, the structure fails. And I would blame my cat. He's always breaking things. |
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