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Zirconium oxide is an inorganic non-metal material that belongs to the group of oxide ceramics. Stabilised with yttrium oxide, zirconium oxide achieves outstanding properties such as supreme strength and crack resistance. Due to their excellent polishability and low friction compared to steel, components made from zirconium oxide are ideal for use as guides or end stops. The material is characterised by a particularly high resistance to thermal, chemical and mechanical impact.

Thanks to its high strength and phenomenal impact resistance, it is referred to as ceramic steel.

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Overview of materials for high-performance ceramics

DOCERAM Bezeichnung
Unit A-132 A-141 Z-141 Cerazur Volcera 141 EvoCera
- AI2O3
ZrO2 Y-PSZ ZrO2 Y-PSZ Si3N4 -
- elfenbein
grau, schwarz
grey, black
(g/cm3) 3.9 3.9 >6.04 6 3.2 5.9
Flexural Strength
(MPa) 390 390 1200 1300 1000 400
Compressive Strength
(MPa) 3900 3900 3000 3000 2500 3000
Modulus of Elasticity
(GPa) 390 390 205 205 320 218
Fracture Toughness
(MPa√m) 5.2 5.2 8 12 6.4 -
Weibull Modul
Weibull Modulus
- 12 12 12 25 14 50
Vickers Härte
Vickers Hardness
(HV 0.5) 2000 2000 1300 1150 1650 1047
Thermal Expansion Coefficient
(10 -6K-1) 5.5-8.4 5.5-8.4 10 10 3.4 11.1
Thermal Conductivity
(W/mK) 28 28 <2 <2 22 3.55
Temp. Wechselbeständigkeit
Thermal-Shock Resistance
(ΔT°C) 120 180 290 280 830 -
Maximale Einsatztemperatur
Maximum Operating Temperature
(°C) 1700 1700 1000 1000 1200 -
Spez. Widerstand bei 20°C
Volume Resistivity at 20°C
(Ω cm) > 1017 > 1015 > 1010 > 1010 > 1011 -
Dielectric Strength
(kV/mm) 22 30 - - 20 -

The values listed were determined on standard test specimens. The material properties may deviate from these values depending on the applications and component geometry. Please contact us for precise clarification of the material suitability. Other technical data on request. Subject to technical modifications and errors. 2014 edition.

Sample Solutions

Headed dowels

Headed dowels are used to hold and determine the position of tools and fixtures. The advantage is that it enables punctiform placement of a workpiece. The punctiform support is easy to clean and excludes the possibility of contamination caused by…

Locating pin

During the manufacturing process for all types of products, there is a need to pick up and align parts or components. Since DOCERAM locating pins are ceramic parts made from Cerazur, they are wear-resistant, electrically insulating and do not suffer…

Coated components

Components with a wide variety of coatings are characterised by different properties depending on the type and material of the coating. Many coatings are used to achieve an extended service life as well as improved chemical resistance of the…

CAD portal

Our components from high-performance ceramics can also be configured on-line. All product variants are stored in our CAD portal - you can make adjustments quickly and easily by entering the parameters for your welding process.

Spacer sleeves

Spacer sleeves made from high-performance ceramics are used whenever a defined clearance must be created between two components or in situations where a distance must be bridged.

Flow measurement

One of the most important variables in industrial measurement technology alongside temperature, pressure and force is flow measurement, which is one of the fundamentals of process automation.

Positioning pin

Positioning pins are used for the controlled positioning to extremely fine tolerances of components and moulded sheet metal parts.

Test plugs

Test plugs are assemblies made from different high-performance materials. They are used as standard for reliable 100% testing of vehicle electronics by leading manufacturers in the automotive industry.

Sensor protection

Examples of sensor protection include wear caps, wear disks or wear plates, which are used to protect the sensor behind.

Punching stamps

Punching stamps must repeatedly punch a contour in a predetermined geometry into a sheet.

Cutting disks

All-ceramic cutting disks have carved out a well-earned reputation in series production facilities over many years.

Vacuum-tight components

Many technical processes such as semiconductor fabrication, medical technology or material testing are conducted in a vacuum.

Valve needle/seat

The function of valves is to control or block the flow of liquids or gases. There are various types that differ depending on their application, design and mode of activation.

Goods carriers

Goods carriers are used to hold other products, such as circuit boards. In many cases, they must be electrically insulating, wear-resistant and designed to cope with thermal shock to enable smooth handling.

Centring pin

Centring pins are manufactured entirely from ceramic and are used for centring nuts on metal sheets.

Cylindrical pin

Ceramic cylindrical pins - also referred to as dowel pins - are extremely versatile and are used as stops, as bearing shafts for idler pulleys, as printed circuit board holders or for fixture construction in welding technology.

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