Updated on March 9, 2023
Pyrex is still one of the best baking vessels for its ability to distribute heat evenly. However, since it is fragile glassware, it can’t withstand high temperatures in the ovens for prolonged sessions. Also, it doesn’t adapt to temperature changes really well and quick changes in heat can make it break or crack.
It’s okay to use the Pyrex in conventional ovens but when it comes to extreme temperatures like 450 degrees, the equation becomes a little complicated. If you wonder if Pyrex can go in a 450-degree oven take a look at this guide. I’ve shared everything that you need to know about the use of Pyrex in 450-degree ovens.
Can Pyrex Go In A 450-Degree Oven?
Yes, Pyrex can go in a 450-degree oven but you need to adopt the right approach for that. Pyrex is available in different compositions in the market and not all its varieties are thermal shock resistant. You need to figure out the varieties that you can use in a 450-degree oven for 15 to 20 minutes.
What Pyerex Is Safe To Be Used In The Oven?
The original Pyrex is thermally shockproof and can withstand oven temperatures as high as 450 degrees. Pyrex glassware was originally manufactured by Corning. They started manufacturing Pyrex glassware in 1908. The major component of Pyrex glassware at that time was borosilicate glass. Borosilicate glass is known for its low thermal expansion, high strength material composition, and chemical stability.
Its thermal properties make it a perfect option for ovens as high as 450 degrees. The annealing temperature range of borosilicate glass is 470-560 degrees celsius. Also, its transition temperature varies between 440-650 degree Celsius. These figures reveal that Pyrex glassware composed of borosilicate can adapt to extreme temperature changes and resist cracking and breaking.
The Pyrex glassware from 1907 until 1988 contained borosilicate as a major component. Original Pyrex dishes and bowls can go in a 450-degree oven since they are thermal shock resistant and can adapt to quick temperature changes really well. Back then it was perfectly okay to push a dish directly from refrigerator to oven or oven to freezer without worrying about the glass shattering due to extreme temperature changes.
Original Pyrex is now available as classic Pyrex or vintage Pyrex in the market. In 1998 Pyrex was sold to World Kitchen LLC. World Kitchen LLC used soda lime instead of borosilicate. If you own Pyrex glassware manufactured later than 1997 you need to worry while using it in the oven. You need to handle it with care to prevent the glass from shattering inside the oven. Also, it could shatter when going from one temperature to another.
How And Where To Buy Vintage Pyrex?
You can buy vintage Pyrex glassware pieces in the local market as well as from online selling platforms. Vintage Pyrex pieces are available on eBay, Amazon, Etsy, Craigslist, and Goodwill stores. The most sought out vintage pieces are the Pyrex glassware in primary colors. In addition to local markets, you can find these pieces at the church rummage sales and garage sales. In yard and rummage sales you can find classic Pyrex pieces at very affordable prices.
The average cost of vintage Pyrex pieces sold online varies between $15-$20. However, if you are able to find the preloved classic pieces they may cost you as low as $5 per price. While buying vintage Pyrex pieces you need to be careful to avoid damaged and broken pieces. You need to inspect every piece carefully and this isn’t possible in an online purchase. Carefully look for cracks, hard to notice hairline scratches, stains, and chips.
Tips To Use Pyrex In A 450-Degree Oven
Pyrex could break or shatter if placed at a temperature higher than recommended. Also when Pyrex glassware is moved from one extreme temperature to another, it could shatter or break. These pro tips will enable you to use the Pyrex glass safely in a 450-degree oven.
Avoid Extreme Temperature Changes
Pyrex glassware has incredible heat distribution properties but its biggest limitation is its inability to adapt to a quick change in extreme temperature. If you want to bake a better that is stored in the freezer, it is not recommended to put it directly in the oven from the freezer.
You need to wait until the bowl temperature comes down to room temperature. Also, you should avoid placing a hot bowl from an oven on a slab, refrigerator, or freezer. Once the cooking process is complete, turn off the oven and wait until the temperature of the glassware is dropped. If you follow these guidelines you can enjoy safe and worry-free cooking and baking.
Preheat The Oven
Preheating the oven is crucial to avoid glassware damage. A gradual increase in the temperature can alter the thermal expansion properties of the glassware. Preheating the oven will enable you to minimize the baking and cooking time of various foods. Less exposure to heat minimizes the chances of gas shuttering. Also, it enables you to get the best heat distribution possible and helps you make all your recipes perfect.
Never Place The Pyrex On Stove Top
A direct heat supply to the Pyrex can break it into pieces. Placing the fragile glassware pieces on the stovetop isn’t safe and not recommended.
Add Liquid At The Bottom Of the Dish
If you are baking food that releases liquid you can add a small amount of liquid to cover the bottom of the dish. The liquid will heat up before the liquid from food is released. It ensures that the bottom of the plate and food are at different temperatures.
What oven temp is safe for Pyrex?
Original Pyrex or Vintage Pyrex glassware can withstand oven temperatures as high as 425-degree celsius. However, with proper care and controlled conditions, you can use the Pyrex in a 450-degree oven.
Why did my Pyrex dish explode in the oven?
If you place cold Pyrex dishes in a preheated oven will explode. When the glass is heated rapidly, some of its parts expand faster than others. It can lead to glass shattering or an explosion inside the oven.
Does Pyrex crack in the oven?
Pyrex does not crack in the oven if used with proper care. You should avoid placing a cold Pyrex dish or bowl in preheated oven as a sudden change in extreme temperature can lead to cracking. Also, you must preheat the oven before you place a Pyrex dish.
Can Pyrex withstand 500 degrees?
Pyrex can not withstand 50-degree celsius as the maximum heat limit can withstand 450 degrees. However classic Pyrex dishes that are made of borosilicate glass may or may not be able to withstand 500 degrees under controlled conditions.
Will Pyrex crack from hot to cold?
Yes, Pyrex will crack due to extreme temperature changes. If you place Pyrex cookware from an oven to refrigerator or refrigerator to an oven it will explode or crack. A sudden increase or decrease in temperature can alter the thermal expansion properties of the glass leading to cracking.
We can safely conclude that it is okay to use classic Pyrex cookware in a 450-degree oven. However, you need to adopt the right approach and control the conditions to make the process safe. It is advised to buy Pyrex cookware that is designed to withstand high temperatures for a prolonged time.