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ZTA

CL10 Classic Crucible in Alumina, Boron Nitride, MGO, Zirconia or ZTA.
Zirconia-toughened alumina (ZTA) shows a considerable improvement in strength and more importantly toughness. As a result, these ceramics can be used in areas of extreme mechanical abrasion and thermal shock.
Fully stabilised zirconia (FSZ) produces a high-density ceramic on sintering. The grain size is relatively large at 10-40µm (microns) and the ceramics are often translucent in appearance. Recent optimisation of zirconia powders have resulted in a readily sinterable high-purity product.
BS208 Boat Crucible - Made In Alumina, MGO, Zirconia or ZTAZTA TubeM3 Bolt ZTA Ceramic Fasteners

Material properties

Please note that the information set forth herein is offered for comparison only, and is not to be construed as absolute engineering data or constituting a warranty or representation for which we assume legal responsibility.
Property Unit Test Zirconia Toughened Alumina
Density g.cc-1 ASTM C20 4.0
Colour WHITE
Elastic Modulus GPa ASTM C848 360
Flexural Strength MPa ASTM F417 450
Compressive Strength MPa ASTM C773 2900
Fracture Toughness Range MPa NOTCHED BEAM 5-6
Hardness GPa ROCKWELL 45N 85
Thermal Conductivity W/mK ASTM C20 27
CTE 25-1000 10(-6)/0C/ ASTM C372 8.2
Thermal Shock delta Tc NOTE3 300
Dielectric Strength ac-kv/mm (6.25mm) ASTM D116 9.0
Dielectric Loss 250C@1MHz ASTM D2520 0.0005
Volume Resistivity 1000C ohm-cm ASTM D1829 10^6

View our full range of Zirconia Toughened Alumina (ZTA) products.

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Almath Crucibles Ltd.

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