Materials manufactured in the UK
We offer a wide range of time-proven ceramic materials which are all manufactured on site to ensure the highest, most consistent quality.
In addition to our standard materials we can offer a selection of high specification products, manufactured in Europe to the highest standards.
Whatever the application, the CeramTec group can provide a solution with unique mechanical, electrical, thermal, and biochemical properties and property combinations.
Steatite 221K
An alkali-free magnesium silicate material of high purity, complying with DIN 40685. Typically used for domestic fuse barrels (BS1362), resistor cores and ignitor electrodes.
| Material Properties | |
|---|---|
| Density | 2.90 g/cm3 |
| Bending Strength (1) | 175 M/mm2 |
| Variation coefficient of strength | 7.50 % |
| Modulus of elasticity | 100 KN/mm2 |
| Thermal expansion (295–895 K) | 7.8x10-6 /K |
| Thermal conductivity (295–895 K) | 2.6 W/mK |
| Volume resistivity @ 675K | 109 Ω cm |
| Fracture elongation | 1.75 % |
| Thermal shock coefficient R1 | 224 K |
| Thermal shock coefficient R2 | 583 W/m |
(1) 3-point-loading 100mm span, specimen 10mm diameter
Hikor 412
A cordierite with outstanding thermal shock resistance, able to withstand high mechanical and electrical loads.
| Material Properties | |
|---|---|
| Density | 2.60 g/cm3 |
| Bending Strength (1) | 150 M/mm2 |
| Variation coefficient of strength | 6.00 % |
| Modulus of elasticity | 110 KN/mm2 |
| Thermal expansion (295–895 K) | 3.3x10-6 /K |
| Thermal conductivity (295–895 K) | 2.4 W/mK |
| Volume resistivity @ 675K | 107 Ω cm |
| Fracture elongation | 1.36 % |
| Thermal shock coefficient R1 | 413 K |
| Thermal shock coefficient R2 | 991 W/m |
(1) 3-point-loading 100mm span, specimen 10mm diameter
Sikor 25
A cordierite suitable for use in Low Voltage and Domestic fuse applications where the higher mechanical strength of Hikor 412 is not required.
| Material Properties | |
|---|---|
| Density | 2.30 g/cm3 |
| Bending Strength (1) | 105 M/mm2 |
| Variation coefficient of strength | 7.50 % |
| Modulus of elasticity | 100 KN/mm2 |
| Thermal expansion (295–895 K) | 3.6x10-6 /K |
| Thermal conductivity (295–895 K) | 2.3 W/mK |
| Volume resistivity @ 675K | 106 Ω cm |
| Fracture elongation | 1.05 % |
| Thermal shock coefficient R1 | 291 K |
| Thermal shock coefficient R2 | 670 W/m |
(1) 3-point-loading 100mm span, specimen 10mm diameter
Alumina A14
A white 80 % alumina ceramic offering good mechanical strength and thermal conductivity.
| Material Properties | |
|---|---|
| Density | 3.20 g/cm3 |
| Bending Strength (1) | 240 M/mm2 |
| Variation coefficient of strength | 10.00 % |
| Modulus of elasticity | 120 KN/mm2 |
| Thermal expansion (295–895 K) | 6.0x10-6 /K |
| Thermal conductivity (295–895 K) | 7.0 W/mK |
| Fracture elongation | 2.00 % |
| Thermal shock coefficient R1 | 333 K |
| Thermal shock coefficient R2 | 2331 W/m |
(1) 3-point-loading 100mm span, specimen 10mm diameter