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High-purity gamma-phase alumina (3-6 μm), with a purity of over 99.99%, has precisely controllable particle size. It possesses excellent specific surface area, chemical stability and thermal conductivity, is resistant to acids and alkalis, and has few impurities. The high purity ensures efficient and stable performance in catalytic and adsorption applications. The narrow particle size distribution is suitable for precision coatings and electronic ceramics in high-end fields. The gamma-phase structure also gives it good dispersibility, making it easy to be compounded with other materials.
Cas No. :
1344-28-1Density :
3.987 g/cm³Melting point :
2054℃Place of Origin :
ChinaApperance :
White PowderPurity :
99.99%Basic information
High-purity alumina (such as 4N grade) has a theoretical density of approximately 3.987 g/cm³. The actual sintered body density often exceeds 3.8 g/cm³. Its Mohs hardness is 9, its melting point is 2054℃, and it possesses both high insulation and corrosion resistance properties.
Specification
|
ITEMS |
STANDARD |
RESULT |
|
Al2O3(%) |
≥99.99 |
99.99 |
|
SiO2(%) |
<0.003 |
0.001 |
|
Fe2O3(%) |
<0.003 |
0.001 |
|
Na2O(%) |
<0.003 |
0.0023 |
|
D50/μ m |
|
5.4 |
|
Phase State |
gamma γ |
gamma γ |
1: High specific surface area, capable of carrying active components, and suitable for reactions such as catalytic cracking and hydrofining in petrochemicals.
2: Strong adsorption capacity, used for gas drying, liquid impurity removal, waste gas purification, and fluoride removal from drinking water.
3: High-temperature resistant and corrosion-resistant, enhancing the strength and thermal stability of ceramics and refractory materials.
4: High-purity coating for lithium battery separators enhances battery safety and cycle life.
Packing
Certificates
The products have been approved by FDA,REACH,ROSH,ISO and other certification, in line with national standards.
Factor
y
FAQ
Q: Are you trading company or manufacturer?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. Or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
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