| 指标 | 保证值 | 典型值 | |
| Property | Guarantee Value | Typical Value | |
| 化学指标 Chemical Property | SiO2 | ≥98.5% | 98.5%-99.5% |
| Al2O3 | ≤0.6% | 0.2%-0.5% | |
| Fe2O2 | ≤0.3% | 0.1%-0.3% | |
| CaO | ≤0.1% | 0.01%-0.1% | |
| Na2O+K2O | ≤0.2% | 0.01%-0.2% | |
| 物理指标 Physical Property | 体积密度 | ≥1.75 | 1.75-1.9 |
| Bulk density g/cm3 | |||
| 常温耐压强度MPa | ≥20 | 25-50 | |
| Cold crushing strength | |||
| 1000oC热膨胀率 | ≤0.3% | 0-0.3% | |
| Thermal expension at 1000 | |||
| 热稳定性 次 | ≥30 | 30-50 | |
| Thermal shock resistance times | |||
| 显气孔率 | ≤18.5% | 14%-18.5% | |
| Apparent porosity | |||
| 抗折系数MPa | ≥3.5 | 3.5-6.0 | |
| Bending coefficient | |||
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