High Thermal Conductivity Fused Silica Powder

• Certification: ISO
• Application: Rubber, Ceramic, Casting
• Fused Silica Sand: 0-1mm,1-3mm,3-5mm,4-10mesh,10-20,20-50,50-100mesh
• Fused Silica Powder: -100,-120f,-150L,200f,270f,325mesh
• Fe2o3: <0.003%
• Al2O3: <0.03%
• Model NO.: 325mesh 400mesh 600mesh 800mesh 1250mesh 2000mesh
• Amorphous Sio2: >99%
• Quartz Sio2: <0.1%
• Cristobalite Sio2: <0.1%
• Thermal Conductivity: 1.3W/M*K
• Dielectric Constant: 3.8(1MHz,20 )
• Electrical Conductivity: 3us/Cm
• Transport Package: Paper Bag, Plastic Bag, Jumbo Bag, Pallet
• Specification: SiO2>99.9%
• Trademark: Chemsize
• Origin: China Lianyungang
• HS Code: 32074000
• Production Capacity: 10000mt/Year

Product Description

Lianyungang Chemsize International Trading Co., Ltd. offers high-quality fused silica sand and powder for superior thermal conductivity. Choose us for the best service and quality!

Product Description

Grade A Fused Silica sand & powder with high thermal conductivity. Top-rated quality from Lianyungang Chemsize International Trading Co., Ltd.

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
		Grade A	Grade B	Grade C
2.1	SiO2	>99.9%	>99.85%	>99.7%
2.2	Al2O3	<100ppm	<150ppm	<0.05%
	The finer the power,the higher the Al2O3,as powder is produced by ball mill with Alumina ball.
2.3	Fe2O3	<30ppm for grain	<60ppm	<0.05%
2.4	CaO	<30ppm	<60ppm	<0.02%
2.5	Na2O	<30ppm	<60ppm	<0.02%
2.6	K2O	<30ppm	<60ppm	<0.02%

High Thermal Conductivity Fused Silica Powder with a thermal conductivity of 1.3w/m*k at 20 ºC, dielectric constant of 3.8 at 1MHz, and electrical conductivity of 3 μs/cm. Ideal for various applications.

		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

Fused Silica

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

Fused Silica Special Features:

• High purity amorphous powder


• Lowest coefficient of thermal expansion


• High resistance to thermal shock


• Low thermal conductivity


• Excellent electrical insulation and lower radiation

Fused Silica Applications:

• Epoxy molding compound


• Epoxy potting compound


• Electrical insulation


• Refractories, ceramic


• Filler for liquid type sealants


• Various types of resin fillers


• Resin substrates


• Precision casting


• Coating, painting


• Artificial marble

Available Sizes:

0-1mm, 1-3mm, 3-5mm, 0.2-0.5mm, 0.1-0.5mm, 0.212-0.425mm, 0.125-0.212mm, -0.044mm, -0.045mm, -10mesh, 10-20mesh, 30-50mesh, 50-100mesh, -100mesh, -150mesh, -270mesh, 30-60mesh, 60-120mesh, 40-70mesh, 70-140mesh, 100-200mesh, 120F, 200mesh, 325mesh, 400mesh, 600mesh, 800mesh, 1250mesh, etc.

The particle size can be produced as per customer's special requirement.

Company name: Lianyungang Chemsize International Trading Co., Ltd.

Third Party Test Report

Production Process

Fused Silica Production Process

High Purity Fused Silica

Fused silica is a high purity quartz sand that has been melted to form glass. Its high volume stability, low volumetric expansion, and high purity make it a versatile material for refractory applications, such as aluminum launders.

Production Process

We source high purity silica sand (SiO2 > 99%) from Donghai/Xinyi for our fused silica production. The sand is melted at temperatures of 2000-2300 ºC to form amorphous silicon dioxide glassy ingots, which are then processed into fused silica lumps, sand, and powder based on customer requirements.

Company Name: Lianyungang Chemsize International Trading Co., Ltd.

Detailed Photos

Discover our High Thermal Conductivity Fused Silica Powder for top-quality, transparent quartz grains. Perfect for industrial applications.

Packaging & Shipping

High Thermal Conductivity Fused Silica Powder in 25kg plastic woven bags, palletized for delivery. Top-quality silica sand for industrial use.

Explore our Fused Silica Factory and Quality Control Pictures at Lianyungang Chemsize International Trading Co., Ltd. for top-rated High Thermal Conductivity Fused Silica Powder.

Fused Silica Making Process

Fused Silica is produced from high purity crystal silica sourced from China Donghai-Xinyi. It is electrically fused at temperatures ranging from 1800-2000ºC to create amorphous Silicon dioxide. The material is then engineered into various forms such as lumps, cullet, ingots, sand, grain, granular, and powder flour. These forms are specifically designed for manufacturing PV fused silica crucibles, thermal ceramics, refractories, EMC investment casting ceramic shells, and more.

Fused Silica Sand Appearance and Specifications:

• Must not contain any unfused parts.


• Should be free of foreign materials like strings, plastic lines, carbon, wood, metal, or other contaminants.


• Only conditional black dots are allowed, no other color dots.


• Black spot diameter should not exceed 2mm.


• Total black dots quantity should be less than 10 per square meter when opening the big bag.

For any inquiries, please contact Lianyungang Chemsize International Trading Co., Ltd.

Chemsize Fused Silica Products

Chemsize, a leading manufacturer of Fused Silica grains and powders, offers high-quality materials for various industries. Our Fused Silica has a fusion ratio of up to 99.9% SiO2, low iron content (30ppm max), and minimal impurities, resulting in low thermal expansion, high thermal shock resistance, and low electrical conductivity. Our unique fusion technique ensures the purest quality Fused Silica in China, meeting ISO-certified standards.

Key Features:

• High fusion ratio of up to 99.9% SiO2


• Low iron content (30ppm max) and minimal impurities


• Low coefficient of thermal expansion


• High resistance to thermal shock


• Excellent chemical stability and low electrical conductivity

Applications:

• Foundry and refractory applications


• Investment casting


• Technical ceramics


• EMC and powder coating fillers

Specialty Products:

We offer tailored shipments for specific applications, including crucibles for solar cell production, rollers for the glass industry, and ceramic slurry for investment casting. Our Fused Silica is also used in the manufacturing of ceramic welding materials and ramming mixes for high-temperature applications.

Package Options:

Standard package: 25kg bags, 48 bags per pallet, or jumbags with a net weight of 1200kgs. Customized bulk bag sizes are available upon request.

Investment Casting Grade:

Our Fused Silica is ideal for investment casting processes, producing precision products for various industries such as automotive, aerospace, and medical.

Contact Lianyungang Chemsize International Trading Co., Ltd. for premium Fused Silica materials tailored to your industry needs.

Chemsize Fused Silica

Welcome to Chemsize Fused Silica

Introducing Chemsize Fused Silica, a leading supplier of raw materials and machines for investment casting foundries for over 30 years.

Advantages of Fused Silica:

• Better particle shape for primary slurry


• Decreased material consumption due to lower density


• Increased permeability and porosity for improved shell quality


• Easier knock-out and shell removal process


• Consistent quality and sustainable sourcing


• Cost-effective pricing at US$0.56/kg FOB LIANYUNGANG PORT

Application Areas:

Our Fused Silica products are ideal for use in coreless medium frequency furnaces and core induction furnaces for melting various metals and alloys.

FAQ:

1. Sample orders are available with free shipping


2. Lead time for samples is 3-5 days


3. No MOQ limit for fused silica sand orders


4. Shipping methods and delivery times vary

For more information, contact Lianyungang Chemsize International Trading Co., Ltd.