Question

the metals which are fit on hard surfaces and produces sound​

Answer 1

Sound is a result of vibrations that produce mechanical waves of audible range of frequencies.

For humans, the audible sound frequency range is 20 Hz to 20000 Hz.

If a metal or even a non metal is shaped in a way that when force is applied on it by some object, it vibrates to produce sound waves of audible sound frequency range, then we can hear the sound for sure.