Fused Silica Products

Fused silica bricks have an extremely low linear expansion coefficient, excellent thermal shock resistance, and high refractoriness. At the same time, fused silica bricks feature low thermal conductivity and excellent corrosion resistance.

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Physical and Chemical Indicators

Item	FS97	FS98	FS99
SiO₂ (%)	≥ 97	≥ 98	≥ 98.5
Al₂O₃ (%)	≤ 0.5	≤ 0.3	≤ 0.2
Fe₂O₃ (%)	≤ 0.3	≤ 0.2	≤ 0.1
Bulk Density (g/cm³)	≥ 1.75	≥ 1.80	≥ 1.85
Apparent Porosity (%)	≤ 22	≤ 20	≤ 18
Cold Crushing Strength (MPa)	≥ 25	≥ 30	≥ 35
Thermal Shock Resistance (Cycles, 1100℃ water cooling)	≥ 30	≥ 30	≥ 30
Linear Expansion Rate (%) at 1000℃at 1000℃	≤ 0.2

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