A silicon carbide kiln plate is a high-temperature ceramic support plate used inside kilns, furnaces, and sintering systems to carry ceramic parts, powder metallurgy components, metal-processing materials, or other workpieces during thermal treatment. Compared with many conventional refractory supports, SiC kiln plates offer higher thermal conductivity, strong thermal shock resistance, good mechanical strength, and stable performance in oxidizing or chemically demanding furnace environments.
What Makes ADCERAX Silicon Carbide Kiln Plates Suitable for Furnace Use?
ADCERAX SiC kiln plates are designed for buyers who need a stable support surface inside high-temperature equipment. In real furnace use, the plate must handle more than temperature alone. The buyer also needs to consider heating cycle, load distribution, atmosphere, supported material, support spacing, plate geometry, and the risk of cracking during rapid temperature changes.
This page focuses on the engineering factors that normally affect SiC kiln plate selection, including temperature resistance, thermal conductivity, load support, surface finish, size layout, hole position, and compatibility with kiln furniture systems.
Key Engineering Advantages for Silicon Carbide Kiln Plates
1. Thermal Shock Resistance for Repeated Heating Cycles
Silicon carbide kiln plates are suitable for furnace environments where heating and cooling cycles are frequent. Their thermal behavior helps reduce cracking risk when the plate is exposed to controlled but repeated temperature changes.
2. High Mechanical Strength for Furnace Loading
The plate structure can support demanding thermal-processing loads when the size, thickness, support span, and loading pattern are properly matched. For heavy loads or large spans, ADCERAX reviews the application conditions before recommending a plate size or material route.
3. High Thermal Conductivity for More Efficient Heat Transfer
SiC has higher thermal conductivity than many oxide ceramic supports. This helps heat move through the kiln furniture system more efficiently and may support more uniform thermal response in suitable furnace designs.
4. Oxidation and Chemical Resistance
Silicon carbide kiln plates can be used in high-temperature oxidizing environments and selected chemically aggressive furnace conditions. Final suitability should be checked against the processed material, atmosphere, slag, vapor, or chemical exposure.
5. Custom Geometry for Kiln Furniture Assemblies
ADCERAX can support drawing-based kiln plate requirements, including custom length, width, thickness, hole position, chamfered edges, surface texture, and matching with SiC support posts or kiln furniture systems.
Technical Specifications of Silicon Carbide Kiln Plate
The technical properties of a silicon carbide kiln plate should be reviewed together with furnace temperature, atmosphere, loading method, support span and heating cycle. The values below are reference ranges for engineering selection and should be confirmed according to the actual operating conditions.
| Property | Typical Reference Value | What It Means for the Application |
|---|---|---|
| Material | Silicon Carbide Ceramic | Suitable for high-temperature support plates, kiln furniture, and thermal-processing fixtures. |
| Density | ~3.15 g/cm³ | Indicates a dense ceramic body with good mechanical stability for demanding furnace use. |
| Thermal Conductivity | 120–180 W/m·K | Helps improve heat transfer and thermal response compared with many lower-conductivity refractory supports. |
| Compressive Strength | 2500–3000 MPa | Supports structural resistance under compression, but real load capacity still depends on plate size, support span, and loading method. |
| Flexural Strength | 350–400 MPa | Important for plates carrying distributed loads across support points. Large plates require careful span and thickness review. |
| Hardness | Mohs 9.5 | Provides strong wear resistance for repeated handling and furnace loading. |
| Maximum Service Temperature | Up to 1600°C | Suitable for many high-temperature kiln and furnace applications, depending on atmosphere and loading conditions. |
| Thermal Expansion | 4.0–5.0 × 10⁻⁶/°C | Helps maintain dimensional stability during heating and cooling cycles. |
| Thermal Shock Resistance | High | Reduces cracking risk when heating and cooling are properly controlled. |
| Surface Finish | Smooth or textured | Surface choice depends on contact behavior, supported parts, and required friction or release performance. |
| Custom Options | Size, thickness, holes, chamfers, surface finish | Allows the plate to match furnace layout, support posts, stacking method, and part geometry. |
Note: These values should be treated as reference ranges. Final material selection and design should be confirmed according to furnace temperature, atmosphere, supported material, loading weight, and drawing requirements.
Dimensions of Silicon Carbide Kiln Plate
ADCERAX supplies standard fish-shaped silicon carbide kiln plates as well as customized SiC plates for furnace fixtures, sintering supports, and kiln furniture assemblies.
| Silicon Carbide Kiln Plate | |||||
| Item No. | Inches | A（mm） | B（mm） | C（mm） | D（mm） |
| AT-SIC-PB141 | 6 | 165 | 285 | 240 | φ18 |
| AT-SIC-PB142 | 6 | 170 | 288 | 238 | φ18 |
| AT-SIC-PB143 | 8 | 187 | 363 | 313 | φ18 |
| AT-SIC-PB144 | 8 | 195 | 350 | 295 | φ18 |
| AT-SIC-PB145 | 8.5 | 200 | 370 | 320 | φ18 |
| AT-SIC-PB146 | 9.5 | 220 | 390 | 335 | φ18 |
| AT-SIC-PB147 | 10 | 218 | 406 | 350 | φ18 |
| AT-SIC-PB148 | 10 | 230 | 405 | 350 | φ18 |
| AT-SIC-PB149 | 10.5 | 230 | 410 | 355 | φ18 |
| AT-SIC-PB150 | 11 | 230 | 410 | 360 | φ18 |
| AT-SIC-PB151 | 12 | 230 | 430 | 400 | φ18 |
| AT-SIC-PB152 | 12.5 | 230 | 450 | 395 | φ18 |
| AT-SIC-PB153 | 15 | 300 | 460 | 470 | φ18 |
Packaging of Silicon Carbide Kiln Plate
Silicon Carbide Kiln Plate is carefully packed to ensure its safety during transit and handling. Each plate is first securely wrapped and then placed in sturdy cardboard boxes, providing protection from external pressure and impacts. The boxes are further reinforced with wooden crates, ensuring that SiC Kiln Plate arrives at its destination in perfect condition.
