SP5000 Alumina ceramic

Alumina ceramic friction material is sintered from high temperature. It includes Al2O3 (95%), high purity Al2O3 (99%), and metal Al2O3 (metal ceramic) (mainly contains Fe).

Alumina has the property of wear resistant, high temperature resistant, and good sealing property. It resists general corrosive mediums except hydrofluoric acid and strong alkali. Alumina is brittle and can crack under severe temperature changing.

Specification:

Material

95% Al2O3

99% Al2O3

Metal Al2O3

Density

3.6g/cm3

3.8g/cm3

4g/cm3

Hardness

82 (HRA)

87 (HRA)

84 (HRA)

Bend strength

2400Mpa

2600Mpa

3000Mpa

Thermal conductivity

8~20wm/k

0.5~0.7wm/k

20~40wm/k

Coefficient of thermal expansion

16~18 x 10-6/ˇăC

16~18 x 10-6/ˇăC

25~30 x 10-6/ˇăC