// SPEC · 耐火砖
熔融石英砖 SiO2 99%
SiO2≥99%熔融石英砖，热膨胀系数极低，抗热震性优异，适用于玻璃窑格子体、精密铸造型壳及半导体高温炉具，精度要求高的场合首选。
// 主要特性
- Ultra-low coefficient of thermal expansion (CTE ~0.5×10⁻⁶/°C)
- Excellent thermal shock resistance for rapid heating and cooling cycles
- High-purity amorphous SiO2 with minimal contamination risk
- Precise dimensional stability for close-tolerance structural applications
// 技术规格
| SiO2 (%) | ≥99.0 |
| Al2O3 (%) | ≤0.2 |
| Apparent Porosity (%) | ≤18 |
| True Density (g/cm³) | ≤2.22 |
| Cold Crushing Strength (MPa) | ≥25 |
// 应用领域
Glass furnace checker brick liningInvestment casting mold support structureSemiconductor diffusion furnace tube liningOptical glass melting furnace contact zoneContinuous casting tundish impact pad component
// 快速规格
最高温度1250°C
导热系数1.55 W/(m·K) at 600°C
体积密度2.21 g/cm³
执行标准GB/T 10325
// 获取报价