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Fused Silica is made of highest purity Chinese crystal Silica by electrically fusing (fusing temperature 1700-2000℃)to amorophos Silicon dioxide , then specially engineered ingots, granular and flour form designed for different usage. This product has a very low thermal conductivity and excellent thermal shock resistance.

　　Special Features:

• Near zero thermal expansion coefficient
• Excellent thermal shock resistance
• Pure(high SiO2 content,low Iron, Potassium & Sodium Oxide)
• Consistent Chemistry
• Statistically controlled particle size distribution

　　Main Applications:

• EMC (Epoxy Molding Compound)
• Investment Casting ,shell mould product
• Refractory & Ceramic materials
• Paint
• Others
   

Chemical Composition:

Item	Ingot & Granule	Powder
SiO2	99.9%	99.8%
AL2O3	40ppm	500ppm
Fe2O3	40ppm	50ppm
Na2O	40ppm	50ppm
K2O	40ppm	50ppm

　　Physical Properties:

• Appearance: Transparent Ingots, Granule or White Powder
• Specific Gravity: 2.21
• Hardness( Mohs): 7.0
• PH: 5-7
• Whiteness: 94Min.

　　Size Available: (Ingot, Granules and powder):

　　(1) 3-10mm, 10-50mm, 8-5mm, 5-3mm, 3-1mm, 1-0.5mm, 1-0.2mm,0-0.5mm, 0.5-0.2mm,
　　　　0.5-0.1mm, 0.2-0.1mm, 0.5-1mm.
　　(2) -4+10mesh, -10+20mesh, -20+50mesh, -30+50mesh,-50+100mesh, -120F,
　　　　-200F, -325F, -400F, -600F.