Final answer:
The metal described is tin. It has a low melting point and is used in fire detection, extinguishing devices, and electrical fuses.
Step-by-step explanation:
The metal described in the question is likely tin. Tin has a low melting point of 231.93°C (449.47°F). It is commonly used in fire detection and extinguishing devices due to its low melting point. Tin is also used in electrical fuses because it can melt and break the circuit when there is a high current.