They are valued for their ease with which it can be formed into desired shapes and forms while retaining high strength.
It is as strong as steel.
They are considered malleable and ductile.
It has been used since prehistoric times to forge tools, weapons, statues and ornaments.
Small amounts of other metals are added to it to make harder alloys for most uses.
It is insoluble in water, but soluble in concentrated acids.
At high temperatures the metal will burn in air and, unusually, it will also burn in pure nitrogen.
It is ductile and it is malleable when heated.
Copper and tin
Resistant to corrosion and attack by most chemicals.
Al
It is extremely strong and resistant to atmospheric corrosion.
Copper and zinc
It is harder than any of its metal ingredients.
It acquires a protective patina that is copper carbonate formed on the surface of the metal when hydrogen sulfide combines with oxygen or sulfur dioxide.
Cu
Ti
