The bells have tensile strength because they are very hard to brake. Another property that bells have is compressive strength in a negative way. This is because they can break if you step on top of them.  The bell is very malleable, this is because that is the main point of the bell you deform it to make it into a shape that you want the bell to be. Since it’s malleable it is also molded. It takes a long time for corrosion of a bell to actually happen. The bell is obviously acoustic, the main point of the bell is to hit it so it makes a loud sound.