Pure Molybdenum Plate

Pure molybdenum sheet is a plate-shaped material made primarily of metallic molybdenum through powder metallurgy and rolling processes. Its molybdenum content typically reaches 99.95% or higher, density ≥10.2 g/cm³, melting point 2620℃, and surface exhibiting a dark brown or silver-gray metallic luster. It possesses a high melting point, excellent high-temperature strength, good electrical and thermal conductivity, and strong corrosion resistance. 

The production process includes hot rolling, cold rolling, and alkaline washing. Surface finishes can be cold-rolled, hot-rolled, alkaline-washed, or polished.

Mo plates and sheets are supplied in two thicknesses: hot-rolled (>0.7 mm) and cold-rolled (<0.7 mm). Width is typically 610±3.0 mm, and length ranges from 1500±5.0 to 2000±5.0 mm. Production employs a combination of hot rolling, cold rolling, and vacuum annealing processes. Rolling gives the molybdenum sheet high strength and resistance to high-temperature creep, while double-sided four-way grinding technology enhances surface smoothness.

After rolling with a deformation of over 60%, the density of the molybdenum plate and sheet is close to the theoretical density of molybdenum. Therefore, it has high strength, uniform internal structure and excellent resistance to high temperature creep, and is widely used in the production of reflectors, heating elements and connectors in vacuum furnaces; reflectors and cover plates in sapphire crystal growth furnaces; sputtering targets for plasma plating; and high-temperature resistant boats and other products.

Luoyang Rare Metal Research Material Co.,Ltd is a global leader in molybdenum plate manufacturing. We offer 99.95% high-purity molybdenum plates in various sizes and thicknesses, with a large inventory.

We can cut, trim, or roll the molybdenum plate and sheet to meet customer specifications for thickness, length, flatness, and surface finish. We can also supply TZM Alloy Plate and Mo-La Alloy Plate.

The surface condition of the molybdenum plate:

The surface of molybdenum plates and molybdenum sheets can be provided in a glossy, matte, satin or rolled state. It depends on the thickness and width parameters of the product.

Molybdenum plate heat treatment:

Molybdenum plates and sheets are rolled and annealed to provide the best conditions for their ideal end uses (furnaces, presses, deep drawing, etc.).

The following is a list of common dimensions for molybdenum foils, sheets and plates. We can also customize processing according to your requirements for thickness, length, flatness, surface finish, etc.

High Purity Molybdenum Plate Properties: 

• High Density: 10.3 g/cm³
• High Melting Point: 2625°C (4760 °F)
• Low vapor pressure at high temperature
• High Tensile Strength
• Low Coefficient of Thermal Expansion (CTE)
• Low Electrical Resistivity
• Good Thermal and Electrical conductivity
• Good Corrosion and Creep resistance
• Good Machinability
• High Absorption Capacity
• High Elastic Modulus

Based on the above characteristics, pure molybdenum plates are widely used in the following high-tech and industrial fields:

High-temperature furnaces and vacuum furnaces

• Molybdenum heating element (heating body):  As the heating component of a high-temperature furnace (up to 1800℃).
• Molybdenum heat shield/ Molybdenum heat field insulation screen / Molybdenum reflection screen/ Vacuum furnace molybdenum shieldings: Composed of multiple layers of molybdenum plates to form an insulation layer, it reduces heat loss by reflecting thermal radiation.
• Furnace chamber, molybdenum rack, furnace support frames, molybdenum supports, and molybdenum boat: Used for carrying workpieces and working at high temperatures for a long time.
• Molybdenum boats for sapphire crystal furnaces and vacuum furnaces.

The semiconductor industry and the electronics field

• Wafer manufacturing: Used as molybdenum sintering boats, molybdenum heaters, and molybdenum heat shields in PVD (Physical Vapor Deposition) processes, as they need to withstand process temperatures as high as 1400°C without contaminating silicon wafers.
• Molybdenum sputtering targets for the vacuum coating and evaporation coating
• Power devices: As the heat sink supporting semiconductor chips, they utilize their high thermal conductivity to rapidly dissipate the heat generated by the chips.
• Electronic tube and microwave tube components.

• Molybdenum Ion sources for ion implantation equipment.

The glass and metallurgical industries

• Glass melting electrode: Used in electric glass melting furnaces, due to its resistance to high-temperature glass liquid erosion.
• Die-casting molds: Used for die-casting of non-ferrous metals such as copper, aluminum and zinc, with a long service life.
• Liquid metal container: Used for holding and transporting molten metals.

Aerospace and Defense

• High-temperature components such as nozzles and throats used in rocket engines.

Other fields

• Used as a backing target in the coating industry.
• Manufacture protective tubes for thermocouples used in high-temperature measurement.

The production process of pure  molybdenum plates mainly includes:

Preparation of molybdenum powder → Isostatic pressing → High-temperature sintering (forming molybdenum billets) → Forging/Hot rolling → Warm rolling/Cold rolling → Annealing → Surface treatment and Finishing (cutting, leveling, grinding).

During this process, the rolling and annealing processes are of vital importance for the crystal structure, mechanical properties and surface quality of the final product.

• Raw material preparation: Use molybdenum powder as the raw material and form a slab 23 through isostatic pressing. The molybdenum powder is usually obtained by reducing high-purity molybdenum trioxide with hydrogen, with a purity of ≥ 99.95%.
• Sintering: Heat-sinter the slab in a hydrogen atmosphere to remove impurities and increase density.
• Strip rolling: After sintering, the slab is subjected to hot strip rolling at 1400°C - 1450°C, with a deformation of approximately 25% to obtain the initial shape.
• Intermediate annealing: Perform intermediate annealing at 900°C - 1000°C to eliminate stress and improve plasticity.
• Cold rolling forming: Through multiple cold rolling passes, precisely control the thickness and surface quality, with a deformation of ≤ 35% per pass.
• Surface treatment: Include alkaline washing to remove oxides and polishing, to improve surface finish.
• Vacuum heat treatment: Perform vacuum annealing on the finished product to improve purity and uniformity of the structure.
• Finishing: Include cutting, inspection, packaging, etc., to ensure the product meets the specification requirements.

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