noun
molybdenum steel
Technical term for steel alloyed with molybdenum, used in engineering and metallurgy.
この部品はモリブデン鋼で作られている。
This part is made of molybdenum steel.
クロム鋼 is chromium steel, another alloy steel; モリブデン鋼 specifically contains molybdenum.
Compound of モリブデン (molybdenum) and 鋼 (steel).