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Description
Overview of High Purity 99 Alumina Aluminum Oxide Ceramic Insulation Plate Sheet
High Purity 99 Alumina Aluminum Oxide Ceramic Insulation Plate Sheet are one of the most widely used and versatile technical ceramics, prized for their excellent combination of properties. Composed primarily of aluminum oxide (Al₂O₃), they offer outstanding hardness, wear resistance, and electrical insulation, even at high temperatures. From low-purity grades for general industrial use to high-purity compositions for demanding applications, alumina ceramics provide a cost-effective and reliable solution across a vast range of industries.
Features of High Purity 99 Alumina Aluminum Oxide Ceramic Insulation Plate Sheet
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High Hardness & Wear Resistance: Excellent resistance to abrasive wear, making it ideal for liners, nozzles, and guides.
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Superior Electrical Insulation: Maintains high electrical resistivity and dielectric strength, even at elevated temperatures.
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Excellent Thermal Stability: Withstands high operating temperatures and exhibits good thermal conductivity.
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High Mechanical Strength: Possesses good compressive strength and stiffness.
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Chemical Inertness: Resists corrosion from a wide range of acids, alkalis, and other harsh chemicals.
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Cost-Effectiveness: A highly versatile and economically efficient ceramic material for numerous applications.
Specification of High Purity 99 Alumina Aluminum Oxide Ceramic Insulation Plate Sheet
This high purity alumina ceramic plate offers excellent performance. It’s made from 99% pure aluminum oxide. This material delivers outstanding hardness and strength. It handles extreme heat very well. Expect reliable operation up to 1650°C. Thermal shock resistance is another key benefit. The plate copes with sudden temperature changes effectively.
Electrical insulation is a primary function. This plate reliably blocks high voltages. Its surface is exceptionally smooth. This minimizes friction and wear. Chemical resistance is impressive too. The plate withstands strong acids and alkalis. It won’t degrade easily in harsh environments. This makes it very durable long-term.
Standard thicknesses are available. Common options include 1mm, 2mm, 3mm, 5mm, 6mm, and 10mm. Custom thicknesses are possible. Plate sizes vary widely. Typical dimensions reach 200mm x 200mm. Larger sizes are also feasible. Surface finish is usually very fine. Precision machining ensures tight tolerances. Flatness is critical for many uses.
This alumina plate serves many demanding applications. It’s perfect for furnace linings and setters. Semiconductor processing equipment relies on it. Laser systems use it as a stable platform. High-temperature sensors need its insulation. It works well in test fixtures and insulators. Any situation needing heat resistance, electrical isolation, or chemical stability benefits.
Applications of High Purity 99 Alumina Aluminum Oxide Ceramic Insulation Plate Sheet
High purity 99% alumina ceramic plates are incredibly useful in tough industrial jobs. They handle very high heat well. This makes them perfect inside furnaces and kilns. They line the hot zones. They protect other parts. These plates are also great electrical insulators. They keep electricity safely contained. You find them in power electronics. They support high-voltage parts. They prevent short circuits.
The semiconductor industry relies heavily on these plates. They hold silicon wafers during processing steps. The extreme purity is critical. It prevents contamination of sensitive chips. Even tiny impurities ruin the product. The surface is very smooth. It doesn’t shed particles. This keeps the wafers clean.
Laser technology uses these alumina plates too. They hold laser components securely. They handle the intense heat lasers generate. They don’t warp or crack easily. The material is very hard. It resists wear and scratches. This ensures long life in demanding equipment.
Chemical processing plants need these plates. Alumina resists strong acids and bases. It doesn’t corrode like metals. It stays stable in harsh chemical baths. This makes it ideal for reaction vessels and lab equipment. It lasts much longer.
These plates work well in high-temperature sensors. They insulate the sensitive measuring elements. They survive the hot environment. They provide reliable readings. The material is also very strong mechanically. It withstands physical stress. It doesn’t deform under heavy loads.
Working with alumina plates is straightforward. You can machine them to specific sizes. You can drill holes as needed. They maintain their shape and properties after machining. Cleaning them is simple. They tolerate most cleaning methods. Their performance stays consistent over time.
Company Profile
Tanki New Materials Co.Ltd. focus on the research and development, production and sales of ceramic products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2015, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.
Our products includes but not limited to Aerogel, Aluminum Nitride, Aluminum Oxide, Boron Carbide, Boron Nitride, Ceramic Crucible, Ceramic Fiber, Quartz Product, Refractory Material, Silicon Carbide, Silicon Nitride, ect. please feel free to contact us.

Payment Methods
T/T, Western Union, Paypal, Credit Card etc.
Shipment Methods
By air, by sea, by express, as customers request.
5 FAQs of High Purity 99 Alumina Aluminum Oxide Ceramic Insulation Plate Sheet
Here are five common questions about High Purity 99 Alumina Aluminum Oxide Ceramic Insulation Plate Sheets:
What makes this alumina ceramic special?
Its purity is 99%. This means almost no impurities. High purity gives better performance. It handles extreme heat well. It resists chemical attacks strongly. It’s electrically insulating too. These traits are vital for tough jobs.
How hot can it get before failing?
This plate works reliably up to 1600°C (2912°F). It keeps its shape and strength. It doesn’t melt or weaken much. This makes it good for furnaces. It’s good for high-temperature sensors also. Other materials fail much sooner.
Why is it good for insulation?
Heat doesn’t travel through it easily. Its thermal conductivity is low. This stops heat moving where you don’t want it. Electricity doesn’t pass through it either. This stops electrical shorts. It separates hot parts safely.
Can it handle sudden temperature changes?
Yes, it handles thermal shock well. It doesn’t crack easily when heated or cooled fast. The material expands very little with heat. This low expansion prevents stress cracks. It lasts longer in cycling temperatures. Brittle ceramics often break.
Can you machine it to specific shapes?
Yes, but it’s very hard. You need diamond tools. Machining must be done before final baking. Once fully hardened, shaping is difficult. Grinding or cutting is possible. It requires special equipment and skill. Plan the shape early.
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