Large-Size Alumina Ceramic Plates Solutions
ADCERAX specializes in large-size alumina ceramic plates, rings and custom structural parts, combining heat resistance, electrical insulation and mechanical strength. Selected forming and sintering routes support lengths up to 6,000 mm, complemented by surface grinding and CNC machining to tailor dimensions, mounting features and surface finishes to your drawings.
- Large-Size Manufacturing
- Custom-Made to Your Drawings
- Heat Resistance & Electrical Insulation
- Surface Grinding & CNC Machining
Where a Large Plate Creates an Advantage
The advantage is not size alone. It is what the larger continuous component removes or improves in the complete assembly.
Fewer joints and tolerance interfaces
A one-piece plate can remove alignment steps, fasteners, seals and the accumulated variation between smaller sections.
One continuous functional surface
Create an uninterrupted insulating, wear-resistant, chemical-resistant or contact surface where seams would disturb performance.
A single datum strategy
A monolithic plate can provide one reference structure for mounting, motion or local precision zones when the support plan is defined.
Lower assembly and cleaning burden
Reducing piece count can simplify assembly, inspection and cleaning while removing crevices that collect process residue.
Large Plate vs. Conventional Alumina Plate
The material may be similar. The engineering problem is not. Large-format work moves the decision from a simple part purchase to a process, support and acceptance system.
Large-format starts when routine processing stops.
No single dimension defines it. Aspect ratio, thickness, weight, precision and logistics matter together.
| Decision area | Conventional plate | Large size alumina plate |
|---|---|---|
| Part definition | Often selected from a routine size range, then machined to a familiar drawing. | Length, width, thickness, aspect ratio, weight and feature distribution are reviewed as one system. |
| Manufacturing route | A repeatable forming, firing and finishing route usually covers the complete part. | Forming, sintering, grinding and CNC envelopes must be checked separately. Stage maxima cannot be combined. |
| Geometry control | Routine tolerances are measured over a smaller span and are less sensitive to support conditions. | Absolute flatness, warpage, parallelism and straightness become more demanding across the full span. |
| Installation logic | The plate is normally one component within a larger joined assembly. | A monolithic plate can replace seams and joints, but its support, mounting and thermal expansion must be designed deliberately. |
| Handling & shipping | Conventional packaging and manual handling may be sufficient. | Weight, lift points, transport orientation, crate support and site access become part of the engineering review. |
| Acceptance | Drawing tolerances may be enough to define inspection. | Datum, free or supported state, inspection temperature and functional measurement area should be agreed before production. |
Which Large-Format Alumina Part Do You Need?
Start with the final geometry. The form, aspect ratio and feature layout determine which process route can be reviewed.
01 / LONG
Long plates & boards
High-aspect-ratio rectangular parts. Send final L x W x T, support span, load and delivery state.
02 / WIDE
Wide panels
Large-area plates or equipment bases. Define support pattern, datum scheme, flatness and local precision zones.
03 / RING
Large rings & discs
Annular or circular parts. Send OD x ID x T, face requirements, mounting and segmentation preference.
04 / STRIP
Long strips
Narrow long parts where straightness, bow, edge condition and transport support are critical.
05 / PROFILED
Profiled plates
Drawing-defined parts with ribs, steps, holes, slots, cut-outs or local machined areas.
Not Sure Which Form Applies?
Send a drawing, sketch or reference part. ADCERAX will first identify the appropriate large-plate route.
Large Alumina Plate Properties
Compare the thermal, mechanical and electrical properties of 96%–99.7% alumina. Select the grade for your large size alumina plate based on operating temperature, load, insulation needs and support conditions.
| Property | 99.7% Al₂O₃ | 99.5% Al₂O₃ | 99% Al₂O₃ | 96% Al₂O₃ |
|---|---|---|---|---|
| Density (g/cm³) | 3.94 | 3.9 | 3.83 | 3.6–3.75 |
| Hardness (Mohs) | 9.1 | 9 | 9 | 8.8 |
| Flexural Strength (MPa) | 330 | 320 | 300 | 260 |
| Compressive Strength (MPa) | 2300 | 2300 | 2210 | 1910 |
| Maximum Operating Temperature (°C) | 1730 | 1700 | 1680 | 1450 |
| Thermal Expansion Coefficient (10⁻⁶/°C) | 7.6 | 7.6 | 7.6 | 7.6 |
| Thermal Conductivity at 25°C [W/(m·K)] | 29 | 27 | 24 | 22 |
| Dielectric Strength (AC-kV/mm) | 22 | 21 | 19 | 15 |
| Volume Resistivity at 20°C (Ω·cm) | >10¹⁴ | >10¹⁴ | >10¹⁴ | >10¹⁴ |
Select the Right Purity Level
These ranges are decision guidance, not an automatic product promise. Final grade, size availability, certificate and acceptance criteria are confirmed on the approved order.
General industrial value
96% alumina
Typical screening logic
Electrical insulation, fixtures, wear protection and equipment structures with balanced performance and cost.
Confirm before selection
Check service temperature, dielectric need, chemical exposure and achievable plate route.
Higher performance
99% alumina
Typical screening logic
More demanding electrical, wear, chemical and temperature environments where purity has functional value.
Confirm before selection
Check exact chemistry, surface state, tolerance, certification and repeat-lot requirements.
High-Purity Grades
99.5–99.7% alumina
Typical screening logic
Vacuum, semiconductor, plasma, clean-process or low-contamination equipment, subject to order-specific material approval.
Confirm before selection
State the required grade and certificate. Availability is confirmed against size, route and approved documentation.
Large Size Alumina Plate Applications
Large size alumina plates are used as glass support plates in display equipment, insulating mounting bases in electrical systems, and setter plates for sintering and heat treatment.
Semiconductor, display & electronics equipment
Insulating bases, interfaces, carriers and polishing/support plates. Specify vacuum, plasma, particle, datum and cleanliness requirements.
Photovoltaic & new-energy equipment
Long or wide insulating and structural plates for process, handling and heating equipment. Define temperature, media, load and feature layout.
Furnace & heat-treatment equipment
Setter, support and barrier plates for elevated-temperature systems. Define span, load, atmosphere, gradient, cycle and allowable deformation.
Electrical & high-voltage systems
Large insulating barriers and bases for mechanical support and electrical isolation. Define creepage, mounting, contamination and test conditions.
Precision machinery & inspection equipment
Structural or reference surfaces with local precision zones. Define datums, support, vibration, motion, mounting and calibration conditions.
Chemical & industrial process equipment
Wear and corrosion barriers, liners and equipment plates. Define exact media, concentration, temperature, erosion, sealing and failure mode.
Custom Large Size Alumina Plates
Define the size, grade, features and functional surfaces your equipment needs. We review your drawing, operating conditions and inspection requirements before confirming the specification.
What Can Be Customized?
Start with the requirements of the finished plate. These options are reviewed together so the geometry, material and inspection scope match your application.
01
Size & Thickness
Set finished length, width and thickness to suit the installation area, workpiece and support layout.
L × W × T · Finished dimensions
02
Alumina Grade
Specify a required grade or share your service conditions for material review. Identify any material documentation you need.
Purity · Service compatibility
03
Holes, Slots & Profiles
Specify holes, slots, cutouts and stepped profiles. Mark critical dimensions and mating features for review.
Mounting features · Fit interfaces
04
Surface Finish
Identify faces that need grinding or polishing. Define roughness where it affects contact, sealing, movement or cleaning.
Functional faces · Surface roughness
05
Functional Tolerances
Mark critical thickness, flatness, parallelism and hole positions individually. Focus tighter requirements on the areas that affect operation.
Critical geometry · Local precision zones
06
Inspection & Delivery
Confirm dimensional reports, material documents, quantities, packaging and delivery based on the reviewed specification.
Acceptance records · Protective packing
From Your Drawing to a Finished Alumina Plate
Share your drawing for a review of material, dimensions and machining requirements. Once the specification is approved, we manufacture and inspect your alumina plate to the agreed requirements.
01
Share Your Drawing
Send the drawing or sketch, revision, quantity and operating conditions. Mark the dimensions that matter most.
02
Review Feasibility
We assess the material, plate geometry, features, finishing needs and critical tolerances as a combined requirement.
03
Resolve the Details
Discuss necessary revisions, support conditions, functional surfaces and the proposed inspection scope.
04
Confirm & Approve
Review the quotation, delivery schedule and specification. Approve the agreed revision before production release.
05
Produce & Verify
Manufacture and inspect to the agreed scope, then prepare the specified records and protective packaging.
Why Choose ADCERAX for Alumina Ceramic Plates?
ADCERAX is a dedicated manufacturer and supplier of alumina ceramic plates, focused on factory-direct quality, engineering support and flexible customization. With strict tolerance control and global shipping, we help you source the right Al₂O₃ plates with confidence.
Factory-direct alumina plates with grade, flatness and surface checks on every production batch.
Professional engineering team giving grade, machining and surface advice from prototype to volume production.
Small batches to large-scale runs, with custom sizes, holes, chamfers and tight tolerances.
24-hour inquiry response; common sizes reviewed quickly, custom plates typically in 3–7 weeks.
Large Size Alumina Plate Manufacturing Capabilities
A 6000 mm forming or firing envelope is not a 6000 mm precision-machined guarantee. Match the final drawing to every required stage.
LONG FORMAT
6000 mm
selected forming and green-body sintering routes
WIDE FORMAT
3000 × 800 mm
selected green-body sintering route
01 Cold-isostatic forming
Green compact envelopes before firing and final machining.
- Long route: up to 6000 × 420 mm
- Wide route: up to 1200 × 1000 mm
02 Green-body sintering
Green-body size entering the firing route; shrinkage and deformation apply.
- Long route: up to 6000 × 600 mm
- Wide route: up to 3000 × 800 mm
03 Surface grinding
Alternative envelopes selected by aspect ratio, thickness, clamping and datum plan.
- Up to 3000 × 400 mm
- Up to 2000 × 800 mm
- Additional route: up to 1200 × 600 mm
04 CNC machining
Alternative profile and feature routes; maxima from different routes are not combined.
- Up to 2000 × 600 mm
- Up to 1300 × 800 mm
- Additional routes: 1600 × 600 mm and 600 × 400 mm
05 Final finished plate
Final size, grade, delivery state, flatness, features, inspection and packaging are approved together.
FAQ
- Choose one large plate when your equipment needs a continuous support, mounting or insulating surface. It reduces joints and separate alignment points across the working area.
- Smaller plates may be more practical when individual sections need frequent replacement or installation access is limited.
The finished size depends on thickness, material grade, surface finish and machining requirements. The dimensions listed for forming, sintering, grinding and CNC machining are separate process limits—not interchangeable finished-plate sizes. Send your dimensions and drawing so we can confirm a suitable production route.
Choose the grade for its required performance, not purity alone. Compare electrical insulation, wear, temperature, chemical exposure and cleanliness requirements against grade-specific material data. Higher purity is not automatically better value, and vacuum, plasma or contamination-sensitive applications need additional material review.
The suitable operating temperature depends on the grade, load, support arrangement and heating cycle. A material’s maximum temperature rating does not guarantee that a loaded plate will remain flat or withstand rapid temperature changes. Specify continuous and peak temperatures, heating and cooling rates, and furnace atmosphere.
Thickness should be selected around the load and the distance between supports—not overall dimensions alone. A plate supported across its base behaves differently from one spanning a gap. Share the load distribution, unsupported span, mounting arrangement and operating temperature so thickness and support can be reviewed together.
Flatness is confirmed for the specified size, thickness, finish and inspection conditions. Identify whether the whole surface or only selected contact areas need tight control. Delivered flatness and flatness during operation are different requirements: mounting forces, support positions and temperature differences can change the plate’s shape.
Custom requirements can include mounting holes, slots, cutouts, chamfers and ground or polished surfaces. For a replacement, provide the existing drawing or measured dimensions together with mating features and mounting details. Explain any previous cracking, wear or alignment problems so the review addresses how the plate is used.
What Should You Send?
An early sketch is enough to start a discussion. A controlled drawing and agreed requirements are needed before production approval.
- Drawing, sketch or reference image
- Application, support and load
- Critical tolerances and finish
- Finished dimensions and revision
- Temperature and process exposure
- Quantity and target delivery date
*Our team will answer your inquiries within 24 hours.
*Your information will be kept strictly confidential.
info@adcerax.com
Tel:+86-0731-84428843
WhatsApp:+86 19311583352
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