200mesh Fused Silica Powder for Investment Casting

• Application: Rubber, Chemical, Metallurgy, Ceramic, Casting, Glass, Powder Coating
• Type: Fused Silica Powder
• Sio2: >99.85%
• Fe2o3: <0.006%
• Xrd Test Result: Amorhous
• Transport Package: Plastic Woven Bag,Paper Bag,25kg Net Each,Pallet
• Model NO.: fused silica powder
• Specification: 200mesh
• Origin: China Lianyungang
• HS Code: 32074000
• Production Capacity: 8000mt/Year

Product Description

Investment Casting Grade Fused Silica Specifications:
 

1.	Physical Properties
1.1	Composition		SiO2
1.2	Structure		Amorphous
1.3	Colour		Transparent or white
1.4	Melting Temperature		approx.1750ºC
1.5	Specific Gravity		2.21g/cm^3
1.6	Hardness		7 Mohs
1.7	Thermal Expansion		0.5*10^-6
2.	Chemical Properties
		Investment Casting Grade
2.1	SiO2	>99.85%
2.2	Al2O3	<100ppm
	The finer the power,the higher the Al2O3,as powder is produced by ball mill with Alumina ball.
2.3	Fe2O3	<60ppm for grains <100ppm for powder
2.4	CaO	<30ppm
2.5	Na2O	<30ppm
2.6	K2O	<30ppm

3.   Particle Size Distribution

		Standard
		10-20	30-50	50-100	-120	-200	-325
Mesh	Microns
+8	2360	<2
+12	1700	6-25
+16	1180	33-50
+20	850	25-45	<1
+30	600	13	25-40
+40	425		32-45
+50	300		15-30	<13
+70	212			30-60
+80	180		0-11			<1
+100	150			28-51	<10	<1
+140	106			4-16	7-13	<10
+200	75			<2	10-15	<10	<3
+325	45				14-20	15-30	4-11
Pan		<3	<2	<1	45-55	70-80	86-97

*Pan designates the percentage of fused silica passing the last reported screen for each size.

Fused Silica Pictures:









Package and Delivery:

Paper bags








Plastic Woven Bag of 25kg Net each,Then on Pallet:





Factory and Quality Control Pictures: