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Established in 1998, China Ningbo LIHE INC. is a professional manufacturer and exporter of all kinds magnets, AL2O3 and mechanical seals, dedicated to satisfying customers by providing wide range magnetic products and relative services. Through years of endeavors, the company has already become a leading manufacturer in magnets, AL2O3s and mechanical seals.
AL2O3 AL2O3s

  Al203
 
LIHE provide different putrity Ceramic what can be fit fot the different requirement application are.



The Physical and Chemical Index of Ceramics(99%)
AL2O3 Ceramics(99%) Index Al203+Fe Cermet Index AL2O3 Ceramics(95%) Index Al203+Fe Cermet Index
Content of AL2O3
and MgO>=%
99.5 Content of AL2O3 % 85 Hardness(HRA) 90 Hardness(HRA) 87
Content of MgO>=% 0.5 Content of Fe and MgO=% 15 Porosity Rate% 0.5 Porosity Rate% 0.5
Bending Strength Kg/cm2 3000 Bending Strength Kg/cm2 3200 Coeffcient of Heat Expansion(10-6/oC) 5.3 Coeffcient of Heat Expansion(10-7/oC) 5.6
Density g/cm3 3.9 Density g/cm3 4 Thermal Conductivity(W/M.K) 26.7 Thermal Conductivity(W/M.k) 28



mechanical seal




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