Metal that strengthen iron　Because of its high melting point of 2610°C and its excellent mechanical strength and rigidity, molybdenum-containing armor plate, an alloy with steel, was developed at the end of the 19th century as a tungsten substitute metal, and it was produced and used as high-speed steel with World War I.Alloys with other metals increase hardness as well as heat and corrosion resistance, and are used as additives especially for special steels and special alloys, about 80% for steel.In addition to structural alloy steels (for seamless pipes, etc.), stainless steels (nickel-based), cotton swab plates (electronic materials, lighting fixtures, etc.), and super alloys (nuclear power, aircraft, chemical plants, jet engines), its use is expanding to semiconductor substrate firing plates.MIRU revises the index once a week, using molybdenum oxide with 57% pure molybdenum as the index, after interviews with affiliated media, traders, 7 manufacturers, and others.