Low Thermal Expansion 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 top-quality Low Thermal Expansion Fused Silica Powder for various high-temperature applications. Trust us for superior service and quality!

Product Description

Low Thermal Expansion Fused Silica Powder

Discover high-purity fused silica powder with low thermal expansion for various applications, including optical materials, semiconductor industry, and 3D printing.

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%

Discover our Low Thermal Expansion Fused Silica Powder with exceptional thermal properties and high-temperature resistance. Ideal for various industries.

		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 Product Description

Fused Silica

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

Fused Silica Special Feature:

• 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:

• Thermal ceramic industry


• Refractory industry


• Investment casting


• EMC applications


• Solar crucible manufacturing


• Quartz marble production


• Powder coating


• Epoxy molding compound


• Epoxy potting compound


• Electrical insulation


• Refractories


• Filler for liquid type sealants


• Various types of resin fillers


• Resin substrates


• Precision casting


• Coating and painting


• Artificial marble production

Fused Silica 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. Particle size can be produced as per customer's special requirement.

Reference: Lianyungang Chemsize International Trading Co., Ltd.

Third Party Test Report

Production Process

Fused Silica Product Description

Welcome to Lianyungang Chemsize International Trading Co., Ltd.

Fused Silica Production Process

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

Raw Material

We source high-purity silica sand (SiO2 > 99%) from local Donghai/Xinyi for our production process.

Manufacturing Process

The silica sand is melted at high temperatures (2000-2300 ºC) to form an amorphous silicon dioxide glassy ingot, which is then cooled. We further process the ingot into fused silica lump, sand, and powder based on customer requirements.

Detailed Photos

Discover our Low Thermal Expansion Fused Silica Powder for high-quality, clear pictures. Ideal for various industries requiring thermal stability and low expansion coefficients.

Packaging & Shipping

Fused Silica Powder in 25kg plastic woven bags on pallets for delivery. Ideal for high-temperature applications in various industries.

Fused Silica Factory and Quality Control Pictures

Explore images of our state-of-the-art fused silica factory and stringent quality control processes.

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

Fused Silica Product Description

Welcome to Lianyungang Chemsize International Trading Co., Ltd.

Fused Silica Making Process

Fused Silica is produced using high purity crystal silica from China Donghai-Xinyi. It is electrically fused at temperatures of 1800-2000ºC to create amorphous Silicon dioxide. The resulting material is engineered into various forms such as lumps, cullet, ingots, sand, grain, granular, and powder flour. These forms are ideal 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; all other color dots are prohibited.


• Black spot diameter should not exceed 2mm.


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

For any inquiries, please feel free to contact us!

Chemsize Fused Silica is a leading manufacturer of high-quality Fused Silica grains and powders. Our materials are utilized in various industries such as Refractory, Investment Casting, Technical Ceramic, and EMC filler applications. With a fusion ratio of up to 99.9% Amorphous SiO2, low iron content (30ppm max), and minimal impurities, our Fused Silica offers exceptional thermal expansion resistance, thermal shock resistance, and low electrical conductivity.

At Chemsize, we produce Fused Silica using a proprietary electric-arc fusion technique, resulting in pure silica with over 99.9% SiO2 content. Our Fused Silica is amorphous, with a low coefficient of thermal expansion, high thermal shock resistance, and excellent size integrity. It meets ISO-certified standards, ensuring quality and reliability for various applications.

Our Fused Silica products are engineered with an extremely low thermal expansion coefficient, consistent chemistry, and precise particle size distribution. They are ideal for foundry, refractory, investment casting, and specialized applications requiring thermal insulation and resistance.

Key Applications of Fused Silica:

• Crucibles for solar cell production in the photo-voltaic industry


• Rollers, castables, mortars, and forming tools in the glass industry


• Technical ceramic manufacturing in the thermal resistance industry


• Ceramic slurry production for investment casting applications

Our standard packaging includes 25kg bags, 48 bags per pallet, or jumbo bags with a net weight of 1200kgs. We offer tailored shipments for customers requiring bulk bags of varying sizes to meet their specific needs.

Experience the superior performance of Chemsize Fused Silica in a wide range of industrial applications, from investment casting to refractory materials, with unmatched quality and reliability.

Introducing Chemsize Fused Silica

Chemsize Fused Silica is a leading supplier of raw materials and machines for investment casting, with over 30 years of experience. Our Fused Silica flour offers numerous advantages for your primary slurry:

• Improved particle shape for better primary slurry performance


• Decreased material consumption due to lower density


• Increased permeability and porosity for better shell quality


• Easier knock-out and shell removal process


• Consistent quality and sustainability


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

Fused Silica Applications:

Our Fused Silica is ideal for induction furnace lining ramming material, offering high purity and efficient performance. It is widely used in various applications, including melting of cast iron, steel, stainless steel, aluminum, copper, and bronze alloys.

FAQ:

Q1: Can I request a sample order for fused silica products?

A: Yes, we provide free samples via ***/FEDEX/DHL. Mixed samples are acceptable.

Q2: What is the lead time for samples and bulk orders?

A: Samples can be sent within 3-5 days. Bulk orders typically ship within 15 days for quantities up to 100mt.

Q3: Is there a minimum order quantity for fused silica sand?

A: No, but lower quantities may result in higher average costs.

Q4: How are the goods shipped and what is the estimated delivery time?

A: Goods are shipped promptly, with delivery times varying based on location.