Highly Polished Alumina (Al2O3)Sheets

Product Description

Alumina Polished Sheets – High-Purity Ceramic Plates for Precision Applications

Alumina polished sheets are precision ceramic plates made from high-purity aluminium oxide (Al₂O₃), designed for applications where extreme hardness, thermal resistance, and surface smoothness are essential. These dense, durable sheets offer excellent insulating properties and are widely used in electronics, optics, analytical testing, and high-temperature environments.

At M-Kube, we supply high-purity alumina polished sheets in Australia, meeting the strict quality standards required by scientific laboratories, semiconductor industries, and advanced engineering applications. With excellent chemical resistance and minimal porosity, these sheets are ideal for use where accuracy and consistency matter most.

Custom Alumina Ceramic Sheets with Precision Polishing

M-Kube offers a range of standard alumina ceramic sheets with polished surfaces on one or both sides. Whether you need precision thickness, tight flatness tolerances, or custom shapes, we can fabricate solutions tailored to your process.

Our customisation capabilities include:

• Offering Thickness >= 0.12mm and surface finish modifications
• Single or double-sided polishing
• Custom-cut shapes and sizes
• Machining of holes, slots, or cut-outs
• Batch production for R&D and commercial applications
• Achieving strict tolerances like +-0.05mm and even stricter tolerances like +/-0.02mm.
• Offering mirror polishing Ra<=0.02.

As a trusted alumina ceramic sheet supplier in Australia, we provide flexible manufacturing and local support to help you get the right product without long lead times.

Key Properties of Alumina Ceramic Sheets – Durable, Smooth, and Heat-Resistant

Alumina polished sheets are chosen for their excellent mechanical, thermal, and chemical properties, including:

• High surface hardness and wear resistance
• Smooth, low-porosity surfaces for cleanroom or optical use
• Outstanding dielectric strength and electrical insulation
• Thermal resistance up to 1700°C
• Excellent dimensional stability and chemical inertness
• Non-contaminating surface for sensitive analytical work

These characteristics make them ideal for use in precise, high-performance environments across research and industry.

Applications of Polished Alumina Sheets

Our alumina polished sheets are used in a wide range of technical and industrial applications in Australia, including:

• Semiconductor and microelectronics fabrication
• Substrates for thin film deposition or sputtering
• High-voltage electrical insulation
• Optical and laser system components
• Hot plate or thermal interface substrates
• Analytical instrument base plates and sample holders

Also explore our alumina crucibles and alumina tubes and rods for high-performance ceramics tailored to lab and industrial applications.

Work with Trusted Alumina Sheet Suppliers in Australia – M-Kube

M-Kube is a trusted partner for engineered ceramic materials in Australia, offering both standard and custom alumina polished sheets to meet technical, analytical, and industrial demands.

We offer:

• High-purity material options
• Surface finish control down to mirror polish with ultra-high precision
• Fast local support and responsive service
• Reliable delivery and consistent quality
• Custom solutions for your specific application

Trusted Worldwide – High-Performance Polished Alumina Sheets with Local Support

While based in Australia, M-Kube serves a global network of clients looking for precision-engineered ceramic solutions. Our alumina polished sheets are manufactured to international quality standards and trusted by professionals in semiconductors, optics, defence, energy, and more.

Whether you’re a research lab in Sydney or a manufacturer in Singapore, M-Kube delivers the ceramic components you can rely on. 

Looking for high-quality alumina polished sheets in Australia?
Call us on +61478594746 or email info@mkube.com.au to discuss your specifications.
Our team is ready to help you find the right sheet solution — whether off-the-shelf or fully customised.