Fused Quartz Sand First Grade with Low Thermal Expansivity mainly used in Precision casting area. Main product specifications (0.5-0.2mesh,1-0 Mesh, 1-0.5mesh 40-70Mesh)

Short Description:

As the refractory materials for shell marketing of precision casting,Fused silica sand and powder have been widely used in the United States and Europe, and large number of experiments and production data shows that using high-purity Fused silica sand and powder for surface of shell making of precision casting has the their own advantages.

Product Detail

Product Tags


1. Near zero thermal expansion, extremely low thermal conductivity.
2. Excellent thermal stability.
3. High purity (the SiO2 content is above 99.8%).
4. Chemical properties are very stable.
5. General mechanical production, particle size for angle type.


II. Main Areas of Application

The Fused quartz grain mainly used in surface sand and surface powder for precision Casting .electronic sealing,paint,coating,Silican rubber,investment casting and high-grade electrical insulation and so on. High grade quartz nozzle,Filling materials including epoxy resin casting, electronic sealing,paint, coating,etc.

III. Basic Parameters

Bulk Density :2.2 g/m3
Hardness :7
Softening Point :1700°C
Melting Point :1750°C
Coefficient of Thermal Expansion :0.1
PH value :6

IV. Chemical Composition

  Guaranteed Value Typical Values
SiO2 99.7%min 99.91%
Al2O3 500ppmmax 360ppm
Fe2O3 500ppmmax 150ppm

V. Availability Specifications

1. Block 0-60 mm
2. Granular





20-40 mesh

4-10 mesh

70-120 mesh


We are a quartz company which is one of the leading producing,grinding,crushing and exporting of quartz materials in Xuzhou China.
We have over 10 years production experience in precision casting and refractory materials.
We also offer a modified specification upon client requirement,Can be produced customized size and specifications to customer granularity requirements.

◆Products feature
1.With lower dielectric constant; Higher purity, better electrical insulation performance, high whiteness; Very low coefficient of thermal expansion;
2.More stable chemical properties,excellent acid and alkali resistance, corrosion resistance, weather resistance

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