Aluminium Titanate Al2TiO5

Aluminium titanate sintered ceramic parts.

Final Advanced Materials provides high temperature Al2TiO5 Aluminium titanatefrom our wide range of sintered ceramics. We can provide Aluminium titanate rods, plates or machine parts according to your drawings.

Al2TiO5 Aluminium titanate overview

Al2TiO5 Aluminium titanate ceramic is the stoichiometric solid solution of Al2O3 aluminium oxide and TiO2 titanium dioxide.

The outstanding thermal shock resistance of aluminium titanate results from the low coefficient of thermal expansion on the macroscopic scale, in combination with the low modulus of elasticity. The dependency of the strength and of the modulus of elasticity on temperature also have what for ceramics are unusual curves. Both values increase as the temperature rises, effects that are again due to the closing of the micro-cracks at higher temperatures.

Al2TiO5 Aluminium titanate characteristics

  • Low modulus of elasticity
  • Low thermal conductivity
  • Very low coefficients of thermal expansion
  • Excellent thermal shock resistance
  • Low wettability by molten non-ferrous metals

Al2TiO5 Aluminium titanate applications

The material is used, for instance, in portliners, cylinder liners and vehicle engines, in the spacing rings of catalytic converters, as kiln furniture and in foundry engineering. Here it is particularly found in aluminium smelting works where it is used for rising pipes and proportioning pipes, nozzles, crucibles, flow regulators and so forth.

Characteristics tables

Properties

Units

Alumina

Zirconia

Silicon carbide

Boron nitride

Aluminium nitride

Silicon nitride

Aluminium titanate

Reference N°

 

055-0010

055-0020

055-0021

103-0010

200-0090

055-0030

103-0020

036-0010

Purity

 

Al2O3 99,7%

ZrO2-Y2O3

ZrO2-MgO

SSiC

BN HD

AlN

Si3N4

Al2TiO5

Classification DIN ISO

 

C779

C800

C800

-

-

C910

C935

-

Characteristics table

Density

g/cm3

3.9

6

5.6

> 3.1

2.2

3.3

3.18 to 3.4

3.35

Open Porosity

%

0

0

0

0

0

0

0

12.5

Colour

 

ivory

white

yellow

black

white

grey

grey

ivory

Mechanical characteristics 20°C

Hardness Vickers HV10

N/mm2

> 17 000

> 12 000

> 10 000

> 25 000

-

> 10 500

15 200

< 2000

Compression strength

N/mm2

2 500

> 1800

> 1800

> 2 500

142

> 2000

3 000

-

Flexural strength

N/mm2

> 370

> 600

> 600

> 400

45

> 350

769

25

Elasticity modulus

GPa

> 380

> 200

> 200

400

-

> 320

290

17

Toughness

MPa.m1/2

4

7

8

3.5

 

> 3

7.5

-

Weibull Modulus

 

15

20

16

10

 

-

25

-

Thermal characteristics

Max. operating temperature

°C

1700

1000

1000

1900 (1600 on air)

1400 (850 on air)

1000

1400

1500

Specific heat 20°C

J/kg.K

900

400

400

670

-

-

700

-

Thermal conductivity 100°C

W/mK

30

2.5

3

125

47

180

25

1.4

Thermal expansion 20 to 1000°C

10-6/K-1

8.5

11

11

4.5

5.85

4.6

3.2

< 1

Electrical characteristics

Specific resistivity 20°C

Ω.m

1012

1012

> 10 7

10-3 to 106

1012

> 1010

1012

1012

Specific resistivity 600°C

10 6

> 10 3

> 10 3

-

 

-

-

-

Dielectric strength

kV/mm

17

-

-

-

19.6

15

-

-

Do not hesitate to contact us for more information, for the design and machining of your parts.

Sintered technical ceramics (813.69k)

Data Sheet: Sintered technical ceramics