Refractory Alumina Setter Plate Overview
Refractory alumina setter plates are high-temperature ceramic kiln furniture designed to support, separate, and protect workpieces during firing and sintering. Manufactured from 96%, 99%, or 99.5% alumina ceramic, they offer excellent thermal stability, mechanical strength, and chemical resistance for repeated use in industrial furnaces.
The schematic diagram of the common alumina setter plate is as follows:
Alumina setter plates are widely used in ceramic manufacturing, powder metallurgy, electronic ceramics, magnetic materials, laboratory furnaces, and other thermal processing industries where dimensional stability and clean firing conditions are required.
Key Features for Alumina Setter Plate
Ceramic setter plate is a common sintering tool, which bears the important function of supporting and protecting ceramic products. It has the following features and functions:
Alumina setter plates maintain structural stability at elevated temperatures and are suitable for repeated firing cycles in industrial furnaces.
High-purity alumina is resistant to oxidation and most chemical environments encountered during ceramic and powder sintering, helping reduce contamination of fired products.
Precision processing is available to improve flatness and thickness consistency, providing reliable support for components requiring accurate positioning during firing.
The dense alumina structure offers long service life under repeated loading, unloading, and thermal cycling conditions.
Specifications of our Alumina Setter Plates
We have many selections of al2o3 ceramic plates, refer to the checklist of standard sizes in different purity.
| S/N | Material | Length (mm) |
Width (mm) |
Thickmess (mm) |
S/N | Material | Length (mm) |
Width (mm) |
Thickmess (mm) |
| 1 | 96% alumina |
114 | 114 | 0.385 | 25 | 99% alumina |
49 | 42 | 3 |
| 2 | 190 | 138 | 0.5 | 26 | 100 | 25 | 3 | ||
| 3 | 280 | 240 | 0.6 | 27 | 105 | 95 | 5 | ||
| 4 | 190 | 138 | 0.75 | 28 | 140 | 140 | 5 | ||
| 5 | 142 | 132 | 0.8 | 29 | 192 | 40 | 6 | ||
| 6 | 130 | 109 | 1 | 30 | 150 | 140 | 8 | ||
| 7 | 114 | 114 | 1 | 31 | 300 | 180 | 8 | ||
| 8 | 230 | 190 | 1 | 32 | 165 | 165 | 8 | ||
| 9 | 280 | 240 | 1 | 33 | 100 | 100 | 10 | ||
| 10 | 395 | 83 | 1 | 34 | 280 | 240 | 10 | ||
| 11 | 92 | 19 | 1.9 | 35 | 300 | 200 | 10 | ||
| 12 | 51 | 4 | 2 | 36 | 105 | 50 | 12 | ||
| 13 | 45 | 14 | 2.5 | 37 | 280 | 240 | 15 | ||
| 14 | 160 | 120 | 3 | 38 | 300 | 200 | 15 | ||
| 15 | 160 | 120 | 4 | 39 | 530 | 250 | 15 | ||
| 16 | 160 | 120 | 5 | 40 | 300 | 200 | 20 | ||
| 17 | 99% alumina |
10 | 25 | 2 | 41 | 400 | 400 | 25 | |
| 18 | 10 | 30 | 2 | 42 | 99.5% alumina |
150 | 126 | 2 | |
| 19 | 24.8 | 24.8 | 2.5 | 43 | 156 | 150 | 2 | ||
| 20 | 24 | 24 | 3 | 44 | 180 | 150 | 2 | ||
| 21 | 30 | 20 | 3 | 45 | 150 | 70 | 4 | ||
| 22 | 30 | 25 | 3 | 46 | 150 | 150 | 4 | ||
| 23 | 36 | 30 | 3 | 47 | 156 | 150 | 4 | ||
| 24 | 36 | 36 | 3 | 48 | 180 | 150 | 4 |
Remark:
All the above big-size ceramic sheets can be cut to specific dimensions per customers’ requirements.
Manufacturing Capabilities
We provide custom honeycomb ceramic products according to customer requirements. Available options include:
- Precision surface grinding
- Double-side lapping
- Drilling
- Slots and grooves
- Chamfering
- Special-shaped machining
Looking for a reliable supplier of ceramic plates?
Contact our engineering team for standard products, OEM manufacturing, and customized ceramic solutions.
Alumina setter plates are used as kiln furniture in high-temperature furnaces to support, separate, and stabilize products during firing. They help maintain dimensional accuracy, reduce deformation, and protect workpieces from direct contact with furnace surfaces. They are widely used for advanced ceramics, electronic ceramics, powder metallurgy, and other precision thermal processing applications.
The appropriate material depends on the firing temperature, loading conditions, contamination requirements, and expected service life. In general, 96% alumina offers good cost performance for standard industrial applications, while 99% and 99.5% alumina provide higher purity, better thermal stability, and lower contamination for more demanding processes.
Yes. We manufacture both standard and custom alumina setter plates in a wide range of dimensions, thicknesses, and shapes. Additional machining operations such as precision grinding, drilling, slots, grooves, and special profiles can also be provided to match specific furnace designs or product requirements.