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 | Materials Summary | Alumina | Silicon Nitride | Zirconia | ZTA | Other Materials | Materials Properties

Ceramco's
Material Properties

Production Formulations

a closer look at ceramic formulaltions Ceramco’s production formulations are developed to address the varied environmental extremes in which OEM ceramic components are commonly used. Although the properties of ceramics in general are well documented, many industrial applications push the envelope on specific requirements (in turn) leading to the development of new formulations to successfully address them.

Production formulations are also engineered as user defined, developed for an OEM ceramic component with a unique set of conditions it must satisfy. As technology advances across all industry, what was a unique set of challenges can become mainstream. Ceramco is ready with a formulation that is already proven and well documented.

The manufacturing process may also drive the need for a production formulation. Such is the case with the differing requirements of additive compared to injection molding. While both may require and utilize a ceramic formulation of almost 100% alumina, as is Ceramco’s A998, there are some differences. With that in mind, this chart of production formulations should always be considered as only a point of general reference. While the formulation that is “just right” for your OEM ceramic component’s requirements may not appear on this chart, it may be only a phone call or an email away from being available.

Using the Formulation Comparison Chart

To show or hide formulations, click the adjacent the formulation's name.

Alumina Formulations:  | | | | | | | |
Zirconia Formulations:  | | | |
Silicon Nitride Formulations:  | |
Property Unit Standard A998 A96 A96P A94 A9968 A9468 MUL6 3YTZP MSZ ZTA8 Si3N4
Chemistry Document - - - PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF PDF
Microstructure Image - - - JPG JPG JPG JPG JPG JPG JPG JPG JPG JPG JPG
Physical Properties
Composition (A) weight %   99.7% Al2O3 95.8% Al2O3 95.8% Al2O3 93.9% Al2O3 99% Al2O3 94% Al2O3 72% Al2O3 5.4% Y2O3 3.5% MgO 85% Al2O3 92% Si3N4
Bulk Density g/cm3 ASTM 2320 3.89 3.67 3.67 3.48 3.10 2.60 2.30 6.01 5.70 4.2 3.23
Porosity volume % ASTM D4404 0% (B) 0% (B) 0% (B) 0% (B) 20% 30% 26% 0% (B) 0% (B) 0% (B) 0% (B)
Grain Size (C) micron, μm ASTM E112 4 3 2 4 3 1 1 1 3
Color     Ivory White Pink White White White Tan White White Tan Dark Gray
Mechanical Properties
Hardness, Vickers GPa All 5 kg U.O.S. 9.66 10.61 1.76 (1 kg) 2.3 (1 kg) 3.19 12.32 9.91 12.48 14.25
4-point Bend
Strength (MOR)
MPa ASTM C1161 365 325 117 119 120 793 657 568 840
K1C MPa·m1/2 ASTM C1421 4 6.70 4.37 3.70 5.05 8.40 6.94 6.55 7.22
Thermal Properties
Service
Temperature (in Air)
°C No Load
Cond.
1650° 1500° 1550° 1500° 1550° 1550° 1500° 800° 1650° 1200°
Coefficient
of Thermal
Expansion (CTE)
°C-1 (25-1000°C) ASTM C372 8.4 x 10-6 8.2 x 10-6 8.3 x 10-6 8.1 x 10-6 8.4 x 10-6 8.2 x 10-6 5 x 10-6 10 x 10-6 9.8 x 10-6 8.3 x 10-6 3.6 x 10-6
Thermal
Conductivity
(20°C)
W/m·°K ASTM C408 30 24 20 30 22.4 4 2.2 2.2 27 22
Electrical Properties
Dielectric
Strength
Volts/mil ASTM D149 220 210 210 220 210 250 228 240 228 215
Dielectric
Constant
@1MHz @ 20°C ASTM D150 9.8 9.0 9.0 9.0 9.0 7.2 29 28 10.6 8
Volume
Resistivity
Ohm·cm @ 25°C ASTM D1829 >1014 >1014 >1014 >1014 >1014 1014 1013 1014 >1014 >1014
Ohm·cm @ 300°C ASTM D1829 >1011 >109 1013 >109 109 >104 109 >109 1011
Ohm·cm @ 500°C ASTM D1829 >107 106 >107 >105 105 <103 105 >106 107
  1. Controlled by the Batch Composition
  2. Impervious
  3. Electron Microscope, Scanning- Tescan Lyra3 GMU FIB SEM, University of New Hampshire, 2019

Other formulations are available. Please contact us for more information.

Properties not recorded are in testing.

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