Molybdenum Seed Holder for Furnace

Molybdenum Seed Holder is a widely used component in vacuum furnaces and sapphire crystal growth furnaces to connect seed rods for crystal growth. It is made of high-purity molybdenum material with a purity of not less than 99.95%. The working temperature of the molybdenum seed holder can be controlled at 1600°-1700°C, the density reaches ≥9.90g/cm3, the dimensional tolerance is within ±0.02mm, the thread is required to be smooth, and the surface finish is required to be high. In addition, there are strict requirements for concentricity, and precise concentricity can improve the force of the tungsten wire rope. The conventional diameter is between 10mm and 100mm, and the length is between 100mm and 1000mm.

Molybdenum seed holder plays a very important role in the sapphire crystal growth process. High-quality single crystal ingots are extracted by controlling the heating power, pulling speed and rotation speed. Molybdenum has a high melting point, high thermal and electrical conductivity, and has a low expansion coefficient and excellent strength, so it is widely used in the crystal growth industry. As the thermal insulation part of the sapphire growth furnace, the molybdenum heat shield can prevent heat loss and reflect heat back into the furnace; as the seed chuck device, the molybdenum seed holder structure is safe, reliable and stable

Size: Dia13*195mm; Dia13*165mm; Dia16*195mm; we also process according to customer's drawings
Grade: Mo1, TZM, Mo-La
Surface: polished
Purity: 99.95%

Physical and chemical properties
Tensile strength: 610 Mpa
Elongation: ≥10%
Mechanical durability
High thermal electrical conductivity
Low coefficient of thermal expansion
Excellent strength and stability at temperatures up to 2000℃

Mo seed holder mainly used for sapphire crystal growth furnace, it's contact with seed and rod, it between crystal and pulling rod, Before growing. Need put seed (small piece of sapphire) in the seed holder and bind WRe wire. melt the raw materials and put down seed to it.

Advantage of our Mo seed holder

1. Polished surface with high quality
2. Uniform grain with densified microstructure ensures longer use time
3. Precise machining tolerance

Are you a factory or manufacturer?
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?
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 Checks Or Full Checks?
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?
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 Mo seed holders ? 
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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