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Fused silica for investment castings ceramic slurry,coatings,shell

Fused silica for investment castings ceramic slurry,coatings,shell

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Price(USD)：USD550/MT
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FUSED SILICA from Chemsize is made from high purity silica, under unique fusion technique,

thus ensuring its high quality. It is over 99% amorphous with extremely low coefficient of expansion,
and high resistance to thermal shocks. It is inert, has excellent chemical stability and extremely low electrical conductivity.

Because of these characteristics, FUSED SILICA finds many uses, including:

Investment Casting, Refractory and Ceramic applications.

Fused Silica grains fused silica powder -Investment Casting Grade
PHYSICAL CHARACTERISTICS and CHEMICAL ANALYSIS

1．	Physical Properties
1.1	Composition		SiO2
1.2	Structure		Amorphous
1.3	Colour		Transparent or white
1.4	Melting Temperature		approx.1750℃
1.5	Specific Gravity		2.21g/cm3
1.6	Hardness		7 Mohs
1.7	Thermal Expansion		0.5*10-6
2．	Chemical Properties
		Investment Casting Grade
2.1	SiO2	>99.90%
2.2	Al2O3	<200ppm
	The finer the power,the higher the Al2O3,as powder is produced by ball mill with Alumina ball.
2.3	Fe2O3	<50ppm
2.4	TiO2	<20ppm
2.5	MgO	<40ppm
2.6	CaO	<40ppm
2.7	AlkaliesNa2O+K2O	<100ppm
3.	Particle Size	Distribution

Particle size distribution:PSD

		10/20	20/50	30/50	50/100	-100	-200	-325mesh
Mesh	Microns
8	2360	<2
12	1700	6-25
16	1180	33-50
20	850	25-45	<1	<1
30	600	13	25-40	15-30
40	425		32-45	38-50
50	300		15-30	20-35	<13
70	212				30-60
80	180		0-11	<10			<1
100	150				28-51	<15	<1
140	106				4-16	17-40	<10
200	75				<2	19-34	<10	<3
325	45					14-30	15-30	4-11
Pan		<3	<2	<2	<1	4-20	70-80	86-97