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Maxthal ceramic engineering material

Ceramic engineering material for use in high-temperature and chemical environments. Maxthal ceramic engineering material is readily machinable and damage tolerant. It can be used at temperatures up to 1450°C (2640°F) in air and 1600°C (2910°F) in vacuum or hydrogen.

Offering a combination of metallic and ceramic properties, Maxthal ceramic engineering material is characterized by, for example:

  • Excellent corrosion resistance in chemical environments
  • Very good high-temperature oxidation resistance
  • High mechanical strength
  • Excellent resistance to thermal shock
  • Good electrical and thermal ability

Product forms

Maxthal ceramic engineering material can be supplied in a variety of product forms, including powder for thermal spray. Examples are:

  • Bar (square and round)
  • Cylinders
  • Plate
  • Powder
  • Rods
  • Tubes

Comparison with other materials

Maxthal ceramic engineering material belongs to the MAX phases and is available as Maxthal 312 (Ti3SiC2) and Maxthal 211 (Ti2AlC), both being strong candidates to replace graphite and SiC in low temperature applications.

Maxthal can also be used as high-temperature engineering ceramic instead of SiC, Al2O3 and Si3N4. Maxthal also extends the service temperature range of alumina-forming metallic alloys.

SiC* Si3N4* Al2O3* Maxthal
312 
Maxthal
211
Flexural strength at RT, MPa  400  800  350  350  250
Hardness, GPa  24.5  15.7  17.7  4.2  4.0
Fracture toughness,
K1C (MPam½)
 4  6.5 4.5   8  7
Thermal shock, ΔT(ºC)  200  700  80 ›1400 ›1400
Max. service temperature, °C (ºF) - - -  1000 (1830)  1450 (2640)
Density, g/cm3  3.2  3.2  3.95  4.5  4.2
Thermal expansion, K-1  3.5x10-6  2.5x10-6 7.5x10-6  9x10-6  8x10-6
Thermal conductivity, W/mK  100  25  30  32–37 40 
Composition Si, C Si, N Al, O Ti, Si, C Ti, Al, C

* Reference values from Swedish Ceramics Institute, Gothenburg, Sweden

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