Please clarify your question! "Metal melt" is not a complete phrase, so it's hard to understand what you're asking.

For example, are you asking:

* Which metals melt? (All metals melt at a certain temperature)

* What is the melting point of a specific metal? (Tell me the metal you're interested in)

* What happens when a metal melts? (It changes from a solid to a liquid)

* How do you melt a metal? (You need to heat it to its melting point)

Once you provide more context, I can help you further!