Ceramics  Manufacturers, Traders, Suppliers

oxide ceramics:
AluminaAl2O3 99.7%

• High temperature application 1700°C, electrical insulator, thin-wall construction, chem. resistant, good thermal conductivity, gas tight
• Application areas:
• Wear component, furnace heating coil support, wire guides etc.

Substrates Al2O3 96%

• electrical printer carriers, insulators

Zirconia ZrO2 y- or MgO-rod.

• very high surface qualities Ra

Fused silica SiO2

• very poor heat conductor, very low thermal expansion; max. 1000°C applicable
• Use as thermal insulators

Non-oxide ceramics:
Aluminium nitride AlN

• very good heat conductor, very good thermal shock resistance
• Use as heat conductors and boards

Silicon nitride Si3N4

• very wear resistant, high toughness and hardness
• for wear parts

Silicon carbide SiC, SiSiC

• High-temperature application, very good resistance to temperature changes; high thermal conductivity, extremely good oxidation resistance
• Examples of use: Slide bearings, guide rails

boron nitride BN+AlN

• low thermal expansion, low density
• for use in glass nozzles

Silicate ceramics:
Aluminium silicate Al2O3 60%

• very high thermal shock resistance, gas-tight; high electrical insulation even at high temperatures 1400°C
• Examples of use: Thermal engineering, wear component, resistance body

cordierite/mullite

• porous
• for filter ceramics

Steatite

• High temperature application
• for use in furnace construction or catalysts

Glasses and other ceramics:
Sapphire Al2O3 99.99%

• very good sliding properties, very good chemical resistance
• Light guides, sliding bodies, insulators, cutting components

Quartz glass SiO2 99.99%

• high temperature resistance 1000°C
• Application examples light guides and chemical use

Borosilicate for use in fibre optics
Macor

• max. 1000°C applicable, conditionally workable with conventional tools!
• For use in radiators and insulators

Our processing techniques:

• cut-off grinding max. diameter 70mm; max. length 250mm
• Surface and groove grinding max. length 300mm
• CNC contour grinding max. 200 x 130mm
• cylindrical grinding max. diameter 150mm; max. length between centres 350mm
• Centerless grinding max. diameter 50mm
• CNC round profile grinding max. diameter 100mm
• Internal honing max. inner diameter 25mm
• Flat lapping; -Polishing does not mean optical polishing for sapphire!
• Round polishing min. diameter 5mm; max. diameter 30mm

• Ceramic materials exhibit very high mechanical strength which is required for the application as components for machines and equipments.
• The hardness of advanced ceramic materials is above 9 on Moh´s Scale, and only diamond is harder (which rates 10 on Moh´s Scale). For this reason ceramic materials are excellent suitable for the production of parts with very high wear resistance e.g. for the paper-, textile- and wire industry.
• The low density of the ceramic material is advantageous in the design of rotating movable parts such as bearings, valves, and rotors.
• Ceramic materials are extremely heat resistant. The properties of metals can be significantly above 500 ° C after. Construction ceramics, however, can also be used above 1000 ° C. Ceramic components, for example in the metal industry in direct contact with molten metal (eg Abziehringen) is used.
• In contrast to metals ceramic materials react only insignificant with acids and bases. Therefore they are ideal for the application in chemical industry.

- Ceramic materials exhibit very high mechanical strength which is required for the application as components for machines and equipments.
- The hardness of advanced ceramic materials is above 9 on Moh´s Scale, and only diamond is harder (which rates 10 on Moh´s Scale). For this reason ceramic materials are excellent suitable for the production of parts with very high wear resistance e.g. for the paper-, textile- and wire industry.
- The low density of the ceramic material is advantageous in the design of rotating movable parts such as bearings, valves, and rotors.
- Ceramic materials are extremely heat resistant. The properties of metals can be significantly above 500 ° C after. Construction ceramics, however, can also be used above 1000 ° C. Ceramic components, for example in the metal industry in direct contact with molten metal (eg Abziehringen) is used.
- In contrast to metals ceramic materials react only insignificant with acids and bases. Therefore they are ideal for the application in chemical industry.
Moreover, ceramic materials are bioinert and are used as implants (e.g. hip joint endoprosthesis, tooth pins, malleus).
All ceramic materials (also non-oxide) exhibit excellent oxidation resistance at high temperatures.

Because of their uniform condition, NABALOX®
raw materials are excellently suitable for manufacturing products with
stable, constant properties. Their advantageous mechanical, thermal,
electrical and chemical properties, as well as their favourable
price/performance ratio made NABALOX® products worldwide an ideal raw material for the ceramics industry sectors.

Key Properties:Density: 3.6 - 3.9 g/cm³
Hardness (Vickers): 15 - 20 GPa (~1500-2000 HV)
Flexural Strength: 300 - 550 MPa (typical for 96%-99% grades)
Compressive Strength: 2000 - 3000 MPa
Thermal Conductivity: 20 - 30 W/(m·K) (for high purity)
Coefficient of Thermal Expansion: 6.5 - 8.0 x 10⁻⁶/K (25-800°C)
Max. Use Temperature: Up to 1600°C (long-term), 1750°C (short-term)
Dielectric Strength: ~10 - 17 kV/mm
Volume Resistivity: >10¹⁴ Ω·cm at 25°C