Technical ceramics are high-performance materials that can be divided into four material groups: silicate ceramics, oxide ceramics, non-oxide ceramics (carbides and nitrides) and piezoceramics. As a rule, they are formed at room temperature from a raw mass formed from ceramic powder, organic binder and liquid and only acquire their typical material properties in a sintering process at high temperatures.

Alumina with an Al2O3 content of more than 80% to over 99% is the technically most important oxide ceramic material. It is characterized by

Due to these outstanding properties, aluminum oxide has established itself as the material of choice for many high-performance applications. Many years ago, we therefore decided to supplement our product range with components and blanks made of technical ceramics, in particular Al2O3.

Key properties by purity:

Property 96 % (C795) 99,8 % (C799)
Density 3,75 g/cm³ 3,96 g/cm³
Flexural strength 310 MPa 630 MPa
Weibull modulus 13 15
Compressive strength 2500 MPa 4000 MPa
Fracture toughness 4,0 MPam½ 4,3 MPam½
Young's modulus 350 GPa 406 GPa
Vickers hardness HV1 1620 MPa 2000 MPa
Max. Operating temperature 1600°C 1700°C
Melting point 2054 °C
Boiling point 2980 ± 60 °C
Due to its versatile properties and property combinations and its good price-performance-ratio, the material is used in practically all fields of applications

Our range of products includes semi-finished products such as blocks, rods, plates and discs as well as thermocouple protection tubes, insulators, radiant tubes and customer-specific CNC-manufactured components according to drawings.