- Dec 19, 2020
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Doesn't it rust?Steel has about twice the heat capacity of ice, if you compare the volume not the weight. Heating 1cm³ of steel from -20°C to 0°C requires 67 joules. Heating 1cm³ of ice from -20°C to 0°C requires 38 joules.
However melting 1cm³ of ice at 0°C requires 307 joules, so 1cm³ of ice has a much bigger cooling effect overall than 1cm³ of steel.
The advantage of steel is that it doesn't dilute the drink like the ice does when it melts.