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StarCeram® Z Zirconium Dioxide (Zirconia, ZrO₂)

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Description

The key benefits of StarCeram® Z include: Very high fracture toughness, very high bending strength and tensile strength, high wear resistance, high pressure resistance, low thermal conductivity, thermal expansion similar to cast iron, modulus of elasticity similar to steel, oxygen ion conductivity, very good tribological properties (also very good for sliding pairings), smooth surfaces and sharp edges possible, bright white colour.

Properties

Electrical

Electrical resistivity ρel

1.00E+8 - 1.00E+13 Ω·m at 20 °C

General

Density ρ

6 g/cm³ at 20 °C

Mechanical

Elastic modulus E

210 GPa at 20 °C

Flexural strength σbend

800 MPa at 20 °C

min, 4-point bending, 40/20mm

Fracture toughness KIC

10 MPa·√m at 20 °C

Hardness, Vickers HV

1220 [-] at 20 °C

converted from 12 GPa

Weibull modulus mW

10 [-] at 20 °C

min

Thermal

Coefficient of thermal expansion α

1.08E-5 1/K at 20 °C

RT - 1000°C

Max service temperature Tmax

800 °C

Thermal conductivity λ

2 W/(m·K) at 20 °C

Thermal shock parameter R1 R1

280 °C

Technological properties

Application areas

Air separator wheels, bearing bushes, protection sleeves, crucibles, cylinder linings, dose bushes, pistons, extruder screws, forming rolls, guide rolls, mill linings, nozzles, slide valves, rotors, wear protection parts, welding rolls, centering pins

This material data has been provided by KYOCERA Fineceramics Precision GmbH.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.