Molybdenum is gray-metallic and has the third-highest melting point of any element next to tungsten and tantalum. It is found in various oxidation states in minerals but does not exist naturally as a free metal. Molybdenum allows readily to form hard and stable carbides. For this reason, Molybdenum is frequently used for making steel alloys, high strength alloys, and superalloys. Molybdenum compounds usually have a low solubility in water. Industrially, they are used in high-pressure and high-temperature applications such as pigments and catalysts.

Molybdenum discs are generally black brown in color, but after alkaline washing, they are usually silver gray with high glossiness, and the surface is smooth and flat, without defects such as double skin, delamination, impurities, cracks, and edges.

from the perspective of physical and chemical properties, molybdenum circular plates have high melting point (2620 ℃), density (10.2g/cm3), hardness (Mohs hardness ranging from 5 to 5.5), strength, low thermal expansion coefficient and resistivity, high conductivity, good chemical stability (not easy to react with acids, bases, and salts), high temperature creep resistance, oxidation resistance, high temperature resistance, and corrosion resistance.

Chemical Composition of Molybdenum Disc

Element	Content(%)(No more than)
	Mo-1	Mo-2
Fe	0.005	0.02
Ni	0.002	0.005
Al	0.002	0.005
Si	0.002	0.01
Ca	0.002	0.005
Mg	0.001	0.003
P	0.001	0.002
C	0.006	0.01
O	0.006	0.08
N	0.003
Pb		0.001
Bi		0.001
Sn		0.001
Sb		0.001
CD		0.001

There are two main production methods for molybdenum wafers, one is powder metallurgy, and the other is hot rolling. Powder metallurgy method is the process of mixing molybdenum powder with other alloy elements and forming circular plates through high-temperature and high-pressure hot pressing. The hot rolling method is to roll molybdenum billets into shape at high temperature and high pressure, followed by annealing and alkali washing to obtain molybdenum sheets.

Molybdenum wafers are widely used in electronics, aviation, aerospace, chemical industry, medical equipment, Optical instrument and other fields. Specifically, it can be used to produce reflective screens and covers in sapphire crystal growth furnaces, reflective screens, heating strips, connectors in vacuum furnaces, sputtering targets for plasma coating, high-temperature resistant vessels, and other products.