Corelle by Corning dish explosion, wanted to share,

[CaptDon]

Had a late night snack after a long day yesterday. As I was cleaning my saucer dish I accidentally dropped it onto a linoleum floor and it seemed to actually explode into very tiny fragments!! The fragments were about the size of a .177 caliber BB and not only spread through the entire kitchen but were also on top of the table and counter!! The tiny sharp fragments were actually lodged into the floor!! I had never expected such a violent reaction from dropping a dish!!! This was as violent and loud as exploding tempered glass!! Now I know what they can do when mis-handled. Cheers all. Have a safe Father's Day weekend!!

[Ian.M]

Corelle is tempered glass: https://en.wikipedia.org/wiki/Corelle and that's what tempered glass does^* if the impact transmitted through the glass exceeds the built-in compressive stress in the outer layer of the other side, or if deeply chipped or scratched.

Do not confuse it with the original stovetop and oven safe CorningWare: https://en.wikipedia.org/wiki/CorningWare

* See:

Prince Rupert's Drop

[Stray Electron]

   I bought my first set of Corelle ware new in 1975 and it was guaranteed for life not to chip or break.  I've dropped some of it over the years and usually it doesn't break but occasionally it does. But I've never tried to get any of the broken bits replaced. The pattern that I have has been out of production for years so it's become a sort of hobby within my extended family to look for any matching pieces in thrift stores, garage sales, etc so we've amassed a large collection of Corelle ware including a lot of the more unusual items.

[ArdWar]

that's what tempered glass does

Pretty much everything that aren't obviously ceramic are tempered soda lime glass these days. Not even Pyrex are safe from enshittification.

Not even laboratory grade Pyrex glassware are safe from enshittification. That was ridiculous. Better treated, but still...

[Psi]

Similar thing happens with Arcoroc, another brand of I'm guessing the same thing.
There was a fad with having Arcoroc coffee cups many many years back, at least around here. (NZ)
They were marketed as drop-proof and there were definitely harder to break, but when they did break they exploded.
Sometimes they would explode many minutes/hours after the damage occurred. All of a sudden BOOM

[GLouie]

Back in college, my materials science prof said that Corelle was not only tempered, but multi-layered and under extreme compression, as ceramics are weak under tension but very strong in compression. Thus, they sometime break with violence. He proceeded to throw a piece on the lecture room floor, but naturally it failed to break. I have never looked into the accuracy of this explanation, but I try to treat my Corelle pieces with respect.

[coppercone2]

I heard your corning glass is safe bullshit and this stuff is out to get you


https://digitalcosmonaut.com/superfest-ceverit-glass-ddr/


its basically case hardened glass. Dripped in molten salt peter for potassium ion infiltration of the surface layers. Designed to keep the vodka flowing in occupied german bars for the duration and aftermath of ww3.

[calzap]

Corningware can come apart violently too.  See the pic.  This happened a few years ago.  At first, I thought the eggs exploded and caused this.  But on reflection, decided there was a small crack in the inner of surface of the dish and water had infiltrated.   When the water suddenly turned to steam, … pow!  The lid of the dish flew across the room and landed intact.  No one was injured, and the microwave survived.  This is the reason welders are told not to weld on concrete, stone, or ordinary brick if it can be avoided.  Use metal, dirt, sand or firebrick instead.
Cal

[coppice]

Pretty much everything that aren't obviously ceramic are tempered soda lime glass these days. Not even Pyrex are safe from enshittification.

If the Pyrex says Made In France it should be proper borosilicate glass. I think Anchor Hocking still use borosilicate glass, too. Its amazing that a material so poorly suited to cookware that extensive research went into finding a more suitable material is now back replacing that more suitable material. Annealing techniques may have improved, but the results with soda lime glass are still pretty lousy.

[ksjh]

If the Pyrex says Made In France it should be proper borosilicate glass. I think Anchor Hocking still use borosilicate glass, too.

SIMAX from Czech Republic should also still be proper borosilicate 3.3:
https://www.kavalier.cz/en/simax-professional/simax-glass.html

[tooki]

Had a late night snack after a long day yesterday. As I was cleaning my saucer dish I accidentally dropped it onto a linoleum floor and it seemed to actually explode into very tiny fragments!!

I had something like that happen years ago with an Arcoroc glass bowl.

I was exhausted and hungry, and made guacamole. Somehow I knocked the bowl off the counter, and it landed on a ceramic dish on the floor (I think I had put it down for the dog or something). The bowl exploded, sending not only guacamole, not just glass, but glass-laden guacamole flying in a 2m radius all around, up to waist height. The fucking stuff was everywhere - the floor, the cabinets, the walls, my legs.

All I wanted was a snack. I just needed a snack. 😂 Not weaponized dip! 

[tooki]

Fun tip I learned from Ann Reardon’s excellent video about Pyrex cookware: an easy test is its refractive index. Borosilicate has a refractive index practically identical to that of vegetable oil, so Pyrex will disappear into a bath of oil invisibly, with only a ghostly, blurry change in color (if the glass and oil have different colors, which they sometimes but not always do) revealing its location. In contrast, soda-lime glass shows clear, sharp edges in vegetable oil.

[coppice]

Fun tip I learned from Ann Reardon’s excellent video about Pyrex cookware: an easy test is its refractive index. Borosilicate has a refractive index practically identical to that of vegetable oil, and will disappear into it, with only a ghostly, blurry change in color (if the glass and oil have different colors, which they sometimes but not always do). In contrast, soda-lime glass shows clear, sharp edges in vegetable oil.

https://www.youtube.com/watch?si=1O8-T-lrABKBGeI5&v=YVbkDAw4aJs

That's an interesting thing. Vegetable oils vary a lot, yet they all seem to have a similar refractive index, and that test works quite well.