SD Tech's ceramic fiber board is a high-performance refractory and insulating material manufactured through a wet forming process using organic and inorganic binders.
With a usable temperature range of 950℃ (1,700℉) to 1,450℃ (2,600℉), it is suitable for areas requiring high insulation and stability, such as furnace and electric furnace doors and ducts. Its excellent insulation and low heat retention maximize energy efficiency, and its light weight and excellent processability make it easy to install.

| Division | SD 1,100 | SD 1,260 | SD 1,360 | SD 1,430 | SD 1,500 | |
|---|---|---|---|---|---|---|
| Classification temperature(℃) |
1,100 | 1,260 | 1,360 | 1,430 | 1,500 | |
| Density(kg/m³) | 250 - 400 | |||||
| Permanent player contraction rate(%) (℃×24hr) |
≤ 4 (1,000℃) | ≤ 4 (1,200℃) | ≤ 4 (1,300℃) | ≤ 4 (1,400℃) | ≤ 4 (1,400℃) | |
| Thermal conductivity (w/m·k) (128kg/m³) |
0.13 (600℃) 0.15 (800℃) |
0.13 (600℃) 0.19 (1,000℃) |
0.13 (600℃) 0.19 (1,000℃) |
0.13 (600℃) 0.19 (1,000℃) |
0.13 (600℃) 0.19 (1,000℃) |
|
| Chemical composition(%) |
Al₂O₃ | 42 - 44 | 45 -46 | 39 | 39 - 40 | 43 |
| Al₂O₃ + SiO₂ | 96 | 98 | - | - | - | |
| SiO₂ | - | - | - | - | - | |
| Cr₂O₃ | - | - | - | - | 2.5 - 3.0 | |
| ZrO₂ | - | - | - | 15 - 17 | - | |