Metallurgy

Metallurgy is the science and technology of metals.

Prixus, a science division Starfleet officer serving aboard the USS Enterprise (NCC-1701-D) specialized in the fields of mineralogy and metallurgy. 

In 2376, while stranded on a planet with Kelis, B'Elanna Torres asked him what kind of metallurgical technology his species possessed -- in particular whether they could produce steel, or bronze.