Will LEGO Bricks Melt in a Hot Car?

Have you ever considered the fate of LEGO bricks in a hot car during a summer day? Does the heat of the sun convert these popular plastic toys into a sticky mess? The answer is a resounding no, but let's explore why this is so, and the actual temperature range at which LEGO bricks and other plastic toys might start to come into play.

The Temperature Myth

Contrary to popular belief, LEGO bricks will not melt in a hot car. The melting point of LEGO bricks is much higher than the temperatures typically found inside a car. LEGO bricks are made from plastic, most commonly acrylonitrile butadiene styrene (ABS), which has a melting point of around 180-225°F (82-107°C). The interior temperature of a car, even on a scorching day, rarely exceeds 150°F (65°C).

Understanding the Science of Plastic Melting

Please note that the melting process of plastic is not an instantaneous one. It requires the material to be heated above its melting point and then held at that temperature for a certain period. In a car, the temperature might spike briefly to around 150°F (65°C) but won't be sustained long enough for LEGO bricks to melt, let alone to a temperature of 300°F, which is far beyond the range of normal car temperatures.

Other Plastic Toys and Temperatures

Although LEGO bricks are unlikely to melt, it's important to consider other plastic toys that might be stored in the hot confines of a car. Some toys are made from polyethylene (PE) or polypropylene (PP), which have lower melting points than ABS, around 287°F (141°C) and 303°F (151°C) respectively. However, even with more fragility, these temperatures are still far from what you would typically experience in a car.

Safety Precautions

While LEGO bricks and most other toys are safe, extreme caution is advised when dealing with other items. For instance, plush toys and electronic devices might be more vulnerable to heat and could melt or degrade. Additionally, pharmaceuticals and food items should be stored in a cooler to prevent spoilage or damage.

Conclusion

Legos and other plastic toys are designed to withstand significant heat without melting. The melting point of LEGO bricks (and similar plastic materials) is far higher than the typical temperature inside a car, making accidental melting extremely unlikely.

Additional Tips

While LEGOs and most toys are safe in a hot car, it's always a good idea to avoid exposing these items to direct sunlight to maintain their longevity. It's also important to be mindful of sensitive items like food, medicine, and electronics, which can be adversely affected by high temperatures. For a comprehensive guide on how to safely handle different materials, especially during extreme weather conditions, check our dedicated resource section.