The outstanding mechanical, thermal, electric and chemical properties, as well as the excellent price-performance ratio of aluminum oxide, make calcined and reactive alumina one of the most important raw materials in industrial and high-performance ceramics. The extreme strength and abrasion resistance of corundum are key properties in wear-resistant ceramics.
- Products with outstanding mechanical, thermal, electric and chemical properties
- Excellent price-performance ratio
- Extreme strength and abrasion resistance
- High purity, finely crystalline alumina
High purity, finely crystalline alumina with a sodium oxide content of max. 0.1% are of particular importance in technical high-performance ceramics.
In refractory ceramics, corrosion resistance, thermal conductivity and heat resistance are vital properties of aluminum oxide (melting point > 2000 °C).
Thanks to its electrically insulating properties, aluminum oxide remains an important raw material in the field of insulating ceramics.
Many electronic components use aluminum oxide: its thermal conductivity, as well as its resistance to changes in temperature, make the product an indispensable material in the automotive industry, to name just one example.
In industrial ceramics, reactive alumina are used to achieve certain properties through the formation of minerals containing aluminum oxide, such as cordierite or mullite. The addition of aluminum oxide to frits and glazes, for example, helps increase surface strength, abrasion resistance and chemical resistance.
|Product||Al₂O₃-Content in %||Special Surface||Green Density / 90 Mpa||Density||Schrinkage||Grain Distribution|
|in %||BET||in g/cm³||at 1600°C/1h in g/cm³||in %|
|ALUMINA CT3000 SDP (Ready-to-press powder)||99,7||7,0||2,31||3,91||16,6 at 1600°C|
|ALUMINA CT1200 SG||99,8||3,1||2,38||3,86 at 1670°C/1h|
|ALUMINA CT3000 SG||99,8||7,5||2,23||3,88 at 1540°C/1h||17,1 at 1540°C|
|ALUMINA CT530 SG||99,8||4,9||2,55 at 50 KN||3,86 at 1670°C/1h||12|
|ALUMINA CTC 20||99,7||2,1||2,40||3,20||monomodal|
|ALUMINA CTC 30||99,8||3,8||2,55||3,45||multimodal|
|ALUMINA CTC 40||99,8||4,8||2,36||3,60||bimodal|
|ALUMINA CTC 50||99,8||4,1||2,60||3,60||multimodal|
|ALUMINA RG 4000||99,8||7,2||2,18||3,83||monomodal|
These values are typical data!
|ALUMINA CL3000 FG||99,8|
|ALUMINA CL3000 SG||99,8|
|ALUMINA CL4400 FG||99,8|
|ALUMINA CT19 FG||99,8|
|ALUMINA CT800 FG||99,7|
|ALUMINA CT800 SG||99,7|
|ALUMINA CT800 SG||99,7|
|ALUMINA CT9 FG||99,5|
|ALUMINA HVA FG||99,7|
|ALUMINA WRA FG||99,7|
|ALUMINA Gilox 63||99,0|
|ALUMINA Gilox 125||99,0|
|ALUMINA CL2500||99,8||low Na₂O-Content (< 0,1%)|
|ALUMINA CL3000||99,8||low Na₂O-Content (< 0,1%)|
|ALUMINA CL4400||99,8||low Na₂O-Content (< 0,1%)|
|ALUMINA CTGA||99,0||particularly high surface, 50-80 m²/g BET|