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High Purity Alumina
Introduction

High purity alumina by virtue of its chemical stability, high melting point, high mechanical strength, high hardness, good thermal conductivity, high insulation and other properties. They’re manufactured by the improved Bayer process.

Application:

Sapphire, ruby, engineering ceramics, ceramic substrate, spray material, photoelectric glass, semiconductor devices, insulators, electrical power devices and more.

Product Typical Properties4N5G-40B

4N5G-D2
(milled)

4N5A-40B

4N5A-D5
(milled) 

Crystal Structure
γγαα

Average Particle Size
(by Bettersize Laser 9300SE)

〔D50,um〕35-451-335-453-5
Loose Bulk Density〔g/cm30.55-0.650.30-0.400.70-0.800.50-0.60
BET Surface Area〔m2/g〕45-5560-70≤5≤5
Purity(Al2O3)≥〔%〕99.99599.99599.99599.995

Impurity≤
(by ICP-OES)

Na〔ppm〕30303030
Ca〔ppm〕1111
Mg〔ppm〕1111
Fe〔ppm〕1111
Si〔ppm〕17171717
Ti〔ppm〕1111
Cu〔ppm〕1111

Packing(As per customer's requests)

〔drum/〕25kg20kg25kg25kg


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