Industrial Ceramic Trays & Sintering Setter Plates for Firing, Calcining and Heat Treatment
ADCERAX is a China-based manufacturer of industrial ceramic trays, setter plates and saggers in alumina, Zirconia and silicon carbide — for sintering, MLCC firing, MIM and powder-metallurgy loading, and high-temperature heat treatment.
We support custom shapes, grooved-locating and reinforced support designs, low MOQ and repeatable supply — helping replace metal, graphite or basic refractory carriers that warp, oxidize or contaminate the load.
Send a drawing or old-part photos with size, flatness, load, firing temperature and atmosphere, and our engineers review manufacturability before quotation.
What Is an Industrial Ceramic Tray?
An industrial ceramic tray is a furnace-loading carrier used to hold parts, powders or fixtures during sintering, firing, calcining or heat treatment. It may also be called a setter tray, firing tray, kiln tray or furnace tray. A sagger is a deeper protective container; a tray is usually the open carrier.
Industrial Ceramic Trays Properties
Industrial ceramic trays made primarily from advanced ceramics such as alumina, zirconia and silicon carbide, deliver high mechanical strength, reliable thermal stability and good chemical resistance to support demanding high-temperature furnace processes.
Alumina Ceramic Tray
Alumina ceramic tray offers versatile high-temperature performance with good mechanical strength, dielectric insulation and corrosion resistance for general furnace processes.
| Property | Unit | 96% Al₂O₃ | 99% Al₂O₃ | 99.5% Al₂O₃ | 99.6% Al₂O₃ | 99.7% Al₂O₃ | 99.8% Al₂O₃ | 99.9% Al₂O₃ | 99.99% Al₂O₃ |
|---|---|---|---|---|---|---|---|---|---|
| Alumina content | % | 96 | 99 | 99.5 | 99.6 | 99.7 | 99.8 | 99.9 | 99.99 |
| Density | g/cm³ | 3.75 | 3.88 | 3.89 | 3.91 | 3.92 | 3.93 | 3.95 | 3.98 |
| Flexural strength | MPa | 330 | 360 | 379 | 312 | 313 | 314 | 315 | 320 |
| Hardness | GPa | 11.5 | 13.5 | 14.1 | 23 | 24 | 25 | 26 | 30 |
| Thermal conductivity | W/m·K | 20–25 | 30–35 | 35 | 32–37 | 33–38 | 34–39 | 35–40 | 36–42 |
| Thermal shock resistance ΔT | °C | 150 | 200 | – | 222 | 223 | 224 | 225 | 228 |
| Maximum use temperature (no load) | °C | ≤1600 | ≤1700 | ≤1750 | 1755 | 1760 | 1765 | 1770 | 1800 |
| Dielectric strength | kV/mm | 8–10 | 10–12 | 11–13 | 12–14 | 12–15 | 13–16 | 14–17 | 15–18 |
| Volume resistivity (25°C) | Ω·cm | ≥1×10¹³ | ≥1×10¹⁴ | ≥3×10¹⁴ | ≥5×10¹⁴ | ≥1×10¹⁵ | ≥3×10¹⁵ | ≥5×10¹⁵ | ≥1×10¹⁶ |
Zirconia Ceramic Tray
Zirconia ceramic tray delivers very high strength and toughness with good thermal shock resistance, suitable where impact resistance and tight tolerances are critical.
| Property | Specification |
| Maximum Working Temperature | 1800 °C continuous use |
| Density | 6.0 g/cm³ |
| Thermal Expansion Coefficient | 10.3 × 10⁻⁶/K (25–1000 °C) |
| Thermal Conductivity | 2.2 W/m·K at 1000 °C |
| Chemical Stability | 0.08% mass loss after 24 h acid/alkali exposure at 1200 °C |
| Flexural Strength | 900 MPa at room temperature |
| Fracture Toughness | 8 MPa·m½ |
| Hardness (Vickers) | 12 GPa |
| Elastic Modulus | 210 GPa |
Boron Nitride Ceramic Tray
Boron nitride ceramic tray provides machinability, strong thermal shock resistance and non-wetting behavior to many metals and slags, helping reduce sticking in inert or vacuum environments.
| Property | Unit | Pyrolytic Boron Nitride | Hot Pressed Boron Nitride |
|---|---|---|---|
| Purity | % | 99.99% | 99.50% |
| Density | g/cm³ | 2.15–2.19 | 1.96–2 |
| Hardness | HVO.5 | 651 | 62 |
| Volume resistivity | Ohm·cm | 2×10¹⁴ | 1.2×10¹⁴ |
| Dielectric strength | kV/mm | 55 | 76 |
| Maximum working temperature | °C | 1000 (air), 2300 (vacuum) | 900 (air), 1850 (vacuum) |
| Bending strength | MPa | 173 (A direction) | 310 |
| Thermal conductivity | W/m·K | 60 (A direction) | 55 |
| Tensile strength | MPa | 112 (A direction) | 110 |
| Thermal expansion coefficient | 1/°C | 6×10⁻⁷ | 1.8×10⁻⁶ |
| Compressive strength | MPa | 154 (A direction) | 120 |
Silicon Carbide Ceramic Tray
Silicon carbide ceramic tray combines high thermal conductivity, strength and wear resistance, making it well suited to rapid heating cycles and heavier load conditions.
| Property | Specification |
|---|---|
| Material System | RBSiC (80% SiC, 20% free Si) / SSiC (≥99% SiC) |
| Maximum Operating Temperature | ≤1380°C (RBSiC) / ≤1600°C (SSiC) |
| Bulk Density | 3.02 g/cm³ (RBSiC) / 3.10 g/cm³ (SSiC) |
| Open Porosity | <0.1% |
| Flexural Strength (20°C) | 250 MPa (RBSiC) / 380 MPa (SSiC) |
| Flexural Strength (1200°C) | 280 MPa (RBSiC) / 400 MPa (SSiC) |
| Compressive Strength | 1000–2200 MPa |
| Elastic Modulus | 330 GPa (RBSiC) / 420 GPa (SSiC) |
| Thermal Conductivity | 45 W/m·K (RBSiC) / 74 W/m·K (SSiC) |
| Thermal Expansion Coefficient | 4.1–4.5 ×10⁻⁶/K |
| Hardness | 2600–2800 kg/mm² |
| Chemical Stability Range | pH 2–12 |
| Oxidation Stability | <1% microstructural oxidation after 50 cycles (1000°C → RT) |
Industrial Ceramic Tray Range
Explore ADCERAX industrial ceramic tray range in alumina, zirconia, boron nitride and silicon carbide, available in round, rectangular and sagger formats to match a wide variety of sintering, firing and heat-treatment workflows.
Industrial Ceramic Tray Material
Alumina Ceramic Tray
Alumina ceramic tray is used for general sintering and firing of technical ceramics, catalyst carriers and powder metallurgy parts.
Zirconia Ceramic Tray
Zirconia ceramic tray is applied to precision and wear-resistant components that need high strength and toughness during thermal cycles.
Boron Nitride Ceramic Tray
Boron nitride ceramic tray is chosen for non-wetting handling of molten alloys and sensitive metal parts in inert or vacuum atmospheres.
Silicon Carbide Ceramic Tray
Silicon carbide ceramic tray is preferred for rapid-cycle heat treatment, heavy loads and abrasive kiln or calcining environments.
Industrial Ceramic Tray Shape
Round Ceramic Tray
Round ceramic tray provides uniform heating and smooth, stable support for centrally loaded parts during firing.
Rectangular Ceramic Tray
Rectangular ceramic tray maximizes usable loading area and fits flat shelves and furnace walls.
Round Ceramic Sagger
Round ceramic sagger offers enclosed, symmetrical protection that helps control contamination and gas exposure.
Square Ceramic Sagger
Square ceramic sagger combines protective walls with easy stacking and dense packing on furnace shelves.
Reduce downtime, reduce rework, reduce cost—industrial ceramic trays that keep your furnace on schedule.
Share your industrial ceramic tray requirements, including drawing, temperature profile, atmosphere, load and cycle expectations, and we’ll suggest the most suitable material and structure to reduce breakage, scrap and overall furnace cost.
Industrial Ceramic Tray Applications
From tiny MLCC components to heavy MIM parts and reactive powders, every furnace load places different demands on its tray. Choose your application to find a suitable material and tray design for your process.
MIM & Powder Metallurgy
Support complex parts during debinding and sintering while addressing sticking, deformation and uneven loading.
MLCC, Ferrites & Electronic Ceramics
Find trays and setters designed around small-component positioning, surface contact, material purity and firing consistency.
Furnace & Kiln Equipment
Replacement trays and custom kiln furniture designed to fit your furnace layout and loading requirements.
Powder Calcination
Choose an open tray, deep-wall tray or protective sagger based on powder depth, furnace atmosphere and contamination concerns.
What we can customize ？
Tray form: flat setter, shallow tray, deep tray or sagger, grooved, pocketed, perforated and divided designs.
Dimensions and tolerances: overall length, width and height, wall thickness, holes, grooves, pockets and applicable tolerances.
Support and handling features: feet, reinforcing ribs, rail-contact areas, stacking features and handling cutouts.
Material and grade: alumina, corundum–mullite, zirconia, boron nitride or silicon carbide, selected according to the application.
From Your Requirements to a Custom Ceramic Tray
Share Your Application
Send a drawing, existing tray or furnace layout, together with the load, temperature, atmosphere and support method.
Review the Tray Design
We review the material, geometry, dimensions and manufacturing feasibility, then confirm any necessary changes with you.
Confirm the Next Step
Review the proposed design and quotation, then choose a prototype, trial batch or production quantity.
Custom Ceramic Trays Designed Around Your Load and Furnace
A custom ceramic tray is not defined by size alone. What it carries, how it is supported, the firing cycle and the problems with the current tray all affect the final design. Share these details with us, and ADCERAX will review a practical material and tray structure for your process.
Why Manufacturers Choose ADCERAX for Custom Ceramic Trays
A ceramic tray must match the load, furnace support and firing cycle—not just the outside dimensions. ADCERAX reviews these conditions before recommending the material, tray structure and production route.
Competitive pricing with strict quality control from raw material sourcing to final delivery
Professional team providing comprehensive technical support and collaborative design
Small batch orders to large-scale production with complex geometries and tight tolerances
24-hour response and 24-hour dispatch for standard items, 3-7 weeks for custom orders.
Professional Industrial Ceramic Tray Factory-ADCERAX
ADCERAX has been engaged in advanced ceramics for over 20 years and has developed more than 2,000 types of high-temperature industrial ceramic components, with a strong focus on industrial ceramic trays and related furnace furniture for demanding thermal processes.
We supply both custom and standard industrial ceramic parts and tray solutions for laboratory analysers, muffle and box furnaces, tube furnaces and other thermal equipment, exporting to more than 50 countries and supporting industrial users and OEMs that require stable, low-contamination and long-life ceramic performance.
Ceramic Tray Processing Strength
ADCERAX controls every step, from forming and machining to sintering and inspection, to keep industrial ceramic tray walls, rims and bases consistent. Tuned firing profiles and 100% visual checks for cracks or chipping deliver durable, thermal-shock-resistant trays that run reliably over many furnace cycles.
CNC Forming Stability & Wall Thickness Control
Dimensional accuracy for industrial ceramic trays is achieved through CNC-assisted forming and machining, keeping wall thickness, straightness and base flatness within tight, repeatable tolerances for reliable furnace loading.
Holding ceramic tray wall variation within narrow bands for stable heating and cooling behaviour.
Controlling side-wall straightness and base flatness to ensure smooth stacking and good contact with shelves or supports.
Machining rims and ends so ceramic trays fit fixtures and carriers correctly, improving handling strength and alignment.
Clean, Low-Contamination Surface Finishing
Internal and external industrial ceramic tray surfaces are finished to reduce residue build-up, minimise contamination and limit micro-cracks, helping each firing cycle stay clean and easy to maintain.
Smoother inner surfaces reduce powder adhesion and make cleaning easier between runs.
Removing sharp rims and micro-chips to lower chipping risk during loading, unloading and tong handling.
Selected surface treatments further lower porosity, supporting cleaner operation where reduced contamination is required.
Sintering for Service Life & Thermal Shock Resistance
Microstructure density and strength in industrial ceramic trays are developed through controlled firing cycles, tuned to each material system for long life under heating and cooling.
Managing ramp and cool-down rates to balance strength, density and resistance to cracking.
Matching soak times and peak temperatures to the chosen tray material to build reliable service life over many cycles.
Low open porosity improves mechanical stability and cuts powder contamination over many cycles, helping trays deliver long-term value.
Industrial Ceramic Tray FAQs
Alumina is a common choice for general high-temperature or lower-contamination duty. Cordierite–mullite is considered for repeated thermal cycling, while silicon carbide is considered when load and thermal response are important. The final choice depends on the temperature, atmosphere, support span and contact material.
As an industry-typical guide, 95–96% alumina is used to about 1450–1500°C, 99–99.7% alumina to about 1650–1760°C, cordierite-mullite to about 1200–1500°C, and silicon carbide to about 1350–1600°C depending on atmosphere. These are material-selection ranges confirmed for your process and atmosphere during engineering review, not guaranteed values.
A setter plate is usually a flat carrier for parts during firing, a tray is a flat or shallow-edged carrier for loading parts or powders, and a sagger is a deeper walled container that protects powders or parts during calcination. We help you choose the form for your furnace and process.
Yes. Send a drawing or old-part photos with length, width, thickness, flatness need, load, firing temperature, atmosphere, contact material and quantity, and our engineers review manufacturability before quotation.
We provide industry-typical flatness and tolerance by size range. The achievable values depend on material, size, thickness and how the tray is loaded, and are confirmed per drawing after engineering review rather than promised in advance.
It depends on your atmosphere, temperature and how the current tray fails. Metal trays can oxidize and warp in high-temperature oxidizing atmospheres, and graphite is limited to vacuum or inert atmospheres. Share the old part material, failure mode, temperature and atmosphere and we review whether a ceramic route fits; we do not promise a drop-in replacement without review.
Key data include tray dimensions, structure (grooves, ribs, holes, walls), temperature profile, atmosphere, load weight per tray, expected cycles and target quantity for samples and production.
In many cases yes, but it is often better to review and adjust tray thickness, reinforcement and support points to fully benefit from ceramic performance and avoid unexpected stress points.
ADCERAX supplies round trays, rectangular trays, round saggers, square saggers and special geometries with grooves, partitions or stepped surfaces to match specific loading patterns.
Request an Industrial Ceramic Tray for Your Process
Tell us what the tray will carry and how it will be used. Even if the design is not final, we can start with the information you already have.
- Drawing or old-part photos
- Length / width / thickness & flatness need
- Load and stacking method
- Firing / working temperature and atmosphere
- Contact material (parts, powder, coating)
- Quantity and target lead time
A drawing is preferred, but a sketch, sample photo, or existing part can also be reviewed.
*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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