"better at absorbing heat than giving it up" is a common misconception held for copper too. Its just the specific heat of the object; a higher specific heat means it can absorb more energy with the same temp increase. This leads to the absorbing heat part; it can absorb a lot of energy without a great increase in temps. This also however leads to the giving it up part- now that it has heated up, it holds a lot of energy so cooling it down takes a while to cool down.
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