What's the plural form of Damask steel? Here's the word you're looking for.
Answer
The noun Damask steel can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be Damask steel.
However, in more specific contexts, the plural form can also be Damask steels e.g. in reference to various types of Damask steels
or a collection of Damask steels.