Molybdenum Disc Wafer

Molybdenum disc wafer, often referred to simply as a molybdenum disc, is a thin, circular disc cut from molybdenum, a refractory metal known for its high melting point, excellent thermal conductivity, and corrosion resistance. Molybdenum disc wafers are available in a variety of thicknesses and diameters and are used across numerous industries for their specialized properties.

Raw material selection: Use high-purity molybdenum powder (purity ≥ 99.95%). Ensuring the high purity of raw materials is the basis for producing high-quality molybdenum discs.
Processing technology:
Powder metallurgy method: Press and sinter the molybdenum powder, and then go through multiple rolling and annealing processes to prepare high-purity, high-density molybdenum discs.
Vacuum melting method: Melt in a vacuum environment to reduce the mixing of impurities and improve the purity and performance of molybdenum discs.
Cold rolling and hot rolling: Control the thickness and surface quality of molybdenum discs through cold rolling and hot rolling processes.
Stamping: Use high-precision stamping equipment to stamp the molybdenum blank into the required disc shape to ensure dimensional accuracy.

✅ Extremely high temperature resistance: melting point up to 2610℃, easily cope with extreme environments such as semiconductor diffusion furnaces, sapphire crystal growth, and resist thermal deformation!

✅ Excellent electrical and thermal conductivity: electrical conductivity ≈ 1/3 of copper, thermal conductivity ≈ 1/2 of copper, balanced efficiency and cost, helps upgrade chip cooling solutions.

✅ Super stability: low thermal expansion coefficient + corrosion resistance, ensures zero pollution and zero volatilization in a vacuum environment, and increases equipment life!

✅ Precision machining: supports customized thickness (starting from 0.1mm) & diameter (±0.01mm tolerance), surface finish can reach Ra0.4, adapted to nano-level process requirements.

Dimensional accuracy: The diameter and thickness tolerance of the molybdenum disc are strictly controlled within ±0.05mm to ensure high precision.
Surface quality: The surface is smooth, without scratches, cracks, oxidation and other defects, and can be polished to further improve the surface finish.
Composition control: Strictly control the oxygen content (≤0.01%) and carbon content (≤0.01%) to ensure the high purity and high performance of the molybdenum disc.
Performance testing: The finished product is tested for mechanical properties (such as hardness, tensile strength, etc.) and corrosion resistance to ensure that it meets the standards.

What are molybdenum discs? 
Molybdenum discs are circular, thin sheets made of high-purity metal molybdenum (Mo), usually used in high-temperature, vacuum or precision electronic industries, such as semiconductors, photovoltaics, coating, and other industries.

What are the advantages of molybdenum discs? 
✅ High temperature resistance
✅ Good thermal and electrical conductivity (more stable than ordinary metals)
✅ Low thermal expansion
✅ Corrosion resistance

Is the oxidation of molybdenum discs easy?

Molybdenum stays consistently inert at room temperature; however, it will oxidize and become shattered when heated over 400℃ in an air atmosphere. Therefore, its applications are mostly in vacuum environments or argon/nitrogen shielded "glove box" systems.

Where are molybdenum discs mainly used? 
🔹 Semiconductor: chip manufacturing, PVD/CVD coating
🔹 Photovoltaic: solar cell coating target
🔹 Scientific research: high temperature experiments, vacuum equipment components
🔹 LED industry: sapphire crystal growth carrier substrate

Can molybdenum discs be as carelessly used as stainless steel cutlery?
❌ No! Although molybdenum is sturdy, it is relatively brittle. In case of handling, it is scared of falling and bumping. Moreover, constant exposure to high-temperature air will oxidize and deteriorate performance.

Can the size of molybdenum discs be adjusted?
Yes! The sizes can range from the most common diameters of 10mm to 300 mm, with the thinnest thickness of 0.1 mm (like a piece of paper) adjustable as needed.

Which is better, Disc Molybdenum or Disc Tungsten?
🔸 Molybdenum is a better metal to use when lightweight applications are preferred. It is cheaper and suitable for most conditions of high high-temperature environments (<2000℃).

🔸 Tungsten has the advantage of better standing high temperatures (3400℃) but comes in at a greater weight, price, and is more difficult to work with.

👉 Select depending on the scenario: the more expensive, the more worth it for the purchase of goods.

What is the service life of molybdenum discs?

Service life in a vacuum or inert gas atmosphere is very long; however, under cyclic high-temperature oxidation, there tends to be surface failure that requires frequent replacements.

Molybdenum discs' ultra-precision cleaning and preservation procedures?

🧼 Cleaning: The use of ultrasonic cleaning followed by alcohol or acetone degreasing is acceptable. Do not use non-abrasive soft materials, which may scratch the surface.

📦 Storage: Preservation of the environment, being dry is essential. It is best kept vacuum-sealed or flooded with inert gases to guard against oxidation.

Are molybdenum discs expensive? 
A: It is much more expensive than normal metals (such as stainless steel), but cheaper than tungsten, tantalum, etc., and is a high-end but cost-effective material.

What is the MOQ?
A: Depends on quantity; generally, no MOQ limit.

How to pay for it?
A: A bank transfer (T/T) will be acceptable.

What is the delivery time?
A: around 7-20 days, which depends on the quantity and production.

What is the package?
A: cartoon case or plywood case.

What is the lead time?
A: From the order placed to cargo receiving will take around 10-25 days.

What is the delivery method?
A: Generally, we send cargo by UPS, DHL, or FedEx. Also, we can send by sea to a seaport or by air to the closest airport.

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