It is common belief that the metals are conductors of heat. But not all metals are good conductors in the same way. The characteristic depends on the type of metal.
The thermal conductivity of materials.
What can we infer from the following table? The values of thermal conductivity of various metals.
|METALS||Conductivity /W/(cm °C)|
1 W/(cm·°C) is the energy in joules that manages to overcome the distance of 1 cm through the section of 1 cm2.
Here are some below:
- Steel has a lower conductivity
- Aluminum is a better conductor than the brass an steel
- Copper has much higher performance than
How to see the difference? For example, thanks to an experiment with a copper bar.
But here’s a piece of trivia.
What is the material with higher thermal conductivity? The diamond. The value of conductivity ranges from 9 to 26 units in table. In fact, this makes it extremely cold to the touch. Instead, among the metals the alloy at 72% silver and 28% copper (CuSil) conducts heat better than the silver only.
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