The term bent is not restricted to any particular material.
Then models are developed to estimate how long a particular material will last under certain conditions.
Then it starts concentrating on the particular materials needed for the construction.
It is specific to a particular material and isotopic system.
Sometimes while traveling, I obsess on a particular material or thing.
If you want particular material from a state tourism office, it is best to write, rather than call, to specify your needs.
This information can then be used to figure out, for example, how a particular material will behave under certain conditions.
This is used for a unit value of any particular material.
So it is same for a particular material of any shape and size.
Many times it is possible to claim the value to be half of what that particular material would cost new.