Properties of materials

Steatit C221 

• Primarily consisting of magnesium silicate
• Impervious material structure
• Good mechanical properties
• High volume resistance up to 1000°C
• Small loss factor

Steatit porous C230

• Primarily consisting of magnesium silicate
• Porous material structure
• Low mechanical strength
• Machinable

Cordierit C410

• Magnesium aluminium silicate
• Impervious material structure
• High resistance to thermal shock
• Very low linear expansion

Cordierit porous C520

• Magnesium aluminium silicate
• Porous material structure
• Low mechanical strength
• High resistance to thermal shock
• Low linear expansion

Mullite C620

• Aluminium silicate
• Approx. 70% Al₂O₃
• Dense material structure

Aluminiumoxid C795, C799 

C795: >95% bis 99% Al₂O₃ - our standard with approx. 96% purity

C799: >99% Al₂O₃ - our standard with 99.7% purity,
in addition, a particularly high-purity variant with 99.99% is available

• Impervious material structure
• High mechanical strength and hardness
• High surface quality
• High thermal conductivity and thermostability
• High chemical resistance

ZTA mixed oxide ceramic alumina reinforced with zirconia

• Individual mixing ratio (2% to 20%) possible
• Higher bending strength and higher wear resistance than pure Al₂O₃
• Better surface quality than pure Al₂O₃ (also polished)

Zirkonoxid (C830)

TZP Yttrium-partially stabilized

• Very high mechanical strength
• High edge stability
• Very good surface quality

PSZ Magnesium-partially stabilized

• Very good tribological properties
• High corrosion resistance

Aluminium titanat ATI

• Porous material structure
• Very low linear expansion
• Very high resistance to thermal shock
• Low thermal conductivity
• Low wetting in case of metal melts

Glass ceramics

• Impervious material structure
• Machinable
• Good electric and mechanical strength
• Dissipative ceramics
• With adjustable resistance value 10⁷ - 10⁹Ωcm

Other materials available on request