PRODUCT

High Purity Alumina

2019-10-24 admin
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, special glass, semiconductor devices, insulators, electrical power devices and more.
 
Specification Details:

Product
Typical Properties
4N5G-40B 4N5G-D2
(milled)
4N5A-40B 4N5A-D5
(milled)
Crystal Structure   γ γ α α
Average Particle Size
(by Malvern 2000)
〔D50,um〕 40 2 40 5
Loose Bulk Density 〔g/cm3〕 0.65 0.50 0.70 0.60
BET Surface Area 〔m2/g〕 80 95 ≤5 ≤10
Purity(Al2O3)  〔%〕 99.995 99.995 99.995 99.995
 
 
Impurity ≤
(by ICP-OES)
Na 〔ppm〕 30 30 30 30
Ca 〔ppm〕 1 1 1 1
Mg 〔ppm〕 1 1 1 1
Fe 〔ppm〕 1 1 1 1
Si 〔ppm〕 17 17 17 17
Ti 〔ppm〕 1 1 1 1
Cu 〔ppm〕 1 1 1 1
Packing 〔drum/〕 25kg 20kg 25kg 25kg
4N5G-40B  4N5G-D2
4N5A-40B 4N5A-D5
 

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