Products Description
Molybdenum discs or wafers are circular sheets made of high-purity molybdenum (Mo) or molybdenum alloys (such as TZM). With their ultra-high melting point, excellent thermal conductivity and low thermal expansion coefficient, they are widely used in high-end fields such as semiconductors, photovoltaics, aerospace, etc.
Features of Polished Molybdenum Discs
| Characteristic | Parameter/Performance | Application Value |
| Melting Point | 2620℃ (for pure molybdenum) | Resistant to ultra-high temperature environments (e.g., semiconductor single crystal furnaces) |
| Thermal Conductivity | 138 W/(m·K) at 20℃ | Rapid heat dissipation to prevent heat accumulation |
| Purity | ≥99.95% (4N5 grade) | Avoids contamination of process materials (e.g., silicon melt) |
| Coefficient of Thermal Expansion | 4.8×10⁻⁶/℃ (20-1000℃) | Matches with silicon, ceramics (reduces thermal stress cracking) |
| Surface Treatment | Polishing (Ra≤0.1μm), nickel plating | Enhances corrosion resistance/welding performance |
Type and Size
Standard: ASTM B386
Material: >99.95%
Density: >10.15g/cc
Molybdenum disc: Diameter 7 ~ 100 mm, thickness 0.15 ~ 4.0 mm
Molybdenum square: 25 ~ 100 mm2, thickness 0.15 ~ 1.5 mm
Flatness tolerance: < 4um
Roughness: Ra 0.8
|
Purity(%) |
Ag |
Ni |
P |
Cu |
Pb |
N |
|
<0.0001 |
<0.0005 |
<0.001 |
<0.0001 |
<0.0001 |
<0.002 |
|
|
Si |
Mg |
Ca |
Sn |
Ba |
Cd |
|
|
<0.001 |
<0.0001 |
<0.001 |
<0.0001 |
<0.0003 |
<0.001 |
|
|
Na |
C |
Fe |
O |
H |
Mo |
|
|
<0.0024 |
<0.0033 |
<0.0016 |
<0.0062 |
<0.0006 |
>99.95 |
| Parameter | Standard Range | Custom Options |
|---|---|---|
| Diameter | 10mm-500mm | Extra-large up to 1000mm (by splicing) |
| Thickness | 0.1mm-20mm | Ultra-thin sheets (0.05mm require special processes) |
| Tolerance | ±0.02mm (high precision) | Laser cutting ensures edge burrs <5μm |
| Hole/Slot Design | Center holes/positioning holes/special-shaped holes | CNC precision machining (±0.01mm) |
Applications of Polished Molybdenum Discs
1. Semiconductor manufacturing
Wafer heat treatment carrier (resistant to 1500℃ or above)
Ion implanter components (anti-sputtering corrosion)
2. Photovoltaic industry
Single crystal silicon growth furnace thermal field components (replacement of graphite)
Thin-film solar cell back electrode
3. Vacuum equipment
Electron beam evaporation source base
High temperature furnace insulation screen (multi-layer molybdenum sheet stacking)
4. Military industry and aerospace
Rocket engine nozzle lining
Satellite thermal control system heat sink
FAQ of Molybdenum discs
Are you a factory or manufacturer?
A:Yes, we are a factory but generally, we use our trading company to handle the business abroad. It will be convenient to receive the remittance and arrange the shipment.
What is the delivery method?
A: Generally, we send cargo by UPS, DHL or FedEx. Also, we can send by sea to seaport or by air to the closest airport.
Why is your product so cost-Effective?
A:We cut out the middlemen in the end-to-end manufacturing process. Rather than obtaining semi-finished goods from other suppliers, we obtain our raw material of APT powder directly from its source.
Do you do spot quality inspection or full inspection ?
A:100% full inspection. Inspectors will check the finished product individually, to ensure they adhere to all parameters. All unqualified products are discarded.
How do you ensure your lead time?
A: We have an efficient Order Management System, from material preparation to machining, and finally to a full inspection. Every stage of production is strictly monitored and controlled to give you an accurate delivery time.
What is the MOQ of molybdenum discs ?
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 kind of the package?
A: Generally, we use a carton case or plywood case with protective material inside to ensure the save of cargo
What is the lead time?
A: from order placed to cargo receiving will take around 10-25 days.
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