Fused Silica Powder

Supply TypeManufacturer, Exporter, Supplier
Preferred Buyer Location All over the world

We are offering fused silica is made of high purity crystal silica by electrically fusing (fusing temperature 1800-2000℃) to amorphous silicon dioxide , then it was classed to different grades by manual and then specially engineered to powder form by ball mill. Because fused silica has a very low thermal conductivity and excellent thermal shock resistance, it is used in lots of fields of investment casting,refractory,ceramic,epoxy modling compound(emc),fusion bounded

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Typical Physical Properties

Color and particle shape	White/ angular
Hardness	7Mohs
True Specific Gravity	2.2g/cm₃
Softening poing	approx.1650₀C
Melting point	approx.1750₀C
Bulk Density	0.9-1.1mt/m₃
Dielectric Constant	3.8(1MHz)
Thermal Conductivity	1.3w/m·k
Coefficient of thermal expansion	0.5*10_-6

Particle Size

Laser particle size(D50)

15-18μm

325mesh passing

>90%

Note : The finer the powder,the higher AL2O3.

Chemical Composition

SiO₂	>99.85%
Al₂O₃	<1800ppm
Fe₂O₃	<35ppm
Na+	<3ppm
Cl-	<3ppm
PH q	5-7
Magnetic material	<20ppm

Packaging DetailsIn big bag of 1-1.2MT/bag net each, In plastic woven bag of 25kg net each, then 1-1.3MT on 1 pallet. In paper bag of 25 kg net each, then 1-1.2MT on 1 pallet

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