Name of Non-Expanding Substances
Date: Summer 2014
What is the name of substances that do not expand on heating?
In fact, there are no substances that (over a wide temperature range)
do not expand at all. There are a few alloys that exhibit very LOW
rates of thermal expansion, but they only exhibit this property over a
relatively narrow temperature range. An example is the alloy "Invar".
I am unaware of a generic name for these alloys.
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