Lead, gold, silver, tin, zinc, aluminium, thorium, copper, brass, and bronze are all soft metals according to the Mohs hardness scale. Gallium is likewise a soft metal because it melts at 85.57 degrees Fahrenheit. Mercury is a liquid metal at ambient temperature.
The softness of a metal is often what makes it valuable. Copper’s softness enables it to be pulled into thin wires and used to make both flexible and rigid plumbing pipes. Copper is too soft for other uses, but it can be alloyed to form metals like brass and bronze that are slightly stronger. Studying at a welding program in Pennsylvania or elsewhere will help with learning all of this.
Lead can also be used to make plumbing pipes, which have been in use since the time of the Roman emperors. One explanation for this is that lead is so soft that it may readily be repaired by pounding or applying molten lead. Lead may be melted over a standard fire because its melting point is at 621 degrees Fahrenheit.
Softness is a disadvantage for other metals. Because precious metals such as gold and silver are too soft to be worn every day, they are almost always alloyed with another metal to make them stronger.