Why does aluminum foil never get hot?

Wrap food in aluminum foil and put it in the oven. One minute after baking, we touch the foil with our hands and take it out. We don't feel hot. Why is that?

1. High thermal conductivity Aluminum foil is able to dissipate heat quickly due to its high thermal conductivity. This means that when aluminum foil is heated, it can quickly conduct heat away from the local area and prevent a certain area from overheating. For example, in an oven, aluminum foil can evenly distribute heat and avoid overheating.

2. Reflectivity Aluminum foil has a smooth and shiny surface that reflects up to 95% of radiant heat. This property enables it to effectively reflect thermal radiation, whether it comes from sunlight, oven heat, or other sources. For example, it keeps food warm by reflecting heat back inside instead of absorbing it.

3. Low thermal mass Aluminum foil is thin (typically 0.01-0.2 mm) and has almost no material to retain heat. Its low thermal mass ensures that it heats up and cools down quickly, avoiding long-term heat retention.

Shanghai Mengjiang Aluminum Co.,Ltd has produced best aluminum foil for over 17 years and export 4000 tons per month. If you are looking for aluminum foil, welcome to contact us or via whats app:008613661547963