Sizal® Board

Our Sizal® range is a complete line of thermal insulators that open the way to many industrial or laboratory applications up to 1800°C. The mechanical and thermal performance of Sizal® products guarantee substantial savings in terms of energy and costs.

Sizal® Board is a range of rigid high-temperature insulation composed of polycrystalline alumina wool (PCW) fibres. Thanks to its structure, this product has excellent resistance to ruptures and/or cracking during rapid temperature rises.

Mullite fibre, also known as Polycrystalline Wool (PCW), offers an alternative to aluminium silicate fibre-based materials. These are referred to as Refractory Ceramic Fibres (RCF).

Sizal® Board offers not only a very homogeneous structure, but also has virtually no non-fibrous particles (shots) during its manufacture. This means is it safe to use and compliant with occupational health and safety.

Main properties of Sizal® Board

  • Guaranteed use up to 1800°C
  • Effective in all atmospheres, including reducing or oxidising atmospheres
  • Low thermal conductivity
  • Excellent thermal shock resistance
  • Dimensional stability, low shrinkage and maintains geometric shape
  • Stabilised chemical composition allowing a wide range of applications, with no pollution to the furnace atmosphere
  • Very light, dust-free, easy to set up
  • No carcinogenic classification

Applications of Sizal® Board

  • Insulation panels for industrial or laboratory installations
  • Furnace linings (electric and gas)
  • Furnace, burner or turbine components
  • Mechanical parts, part supports, and more
  • Repairs

Further informations

Pre-calcination

All Sizal® Board products can be delivered pre-calcined. Cooking parts at more than 350°C eliminates all traces of organic binders that may be present in the materials. This operation avoids gas emissions and potential pollution during more sensitive applications.

Available formats

  • Boards or semi-boards

  • Customised cuts

Customised parts

Sizal® Board products have good machinability thanks to their homogeneous structure. We are also equipped with a machine workshop so that these materials can be used to produce technical parts. Our machining centres are equipped with suction systems, specific cutting tools, and fastening systems for more fragile parts in order to guarantee the best possible quality.

Technical data

Properties

Units

1500/300

1600/400

1650/400*

1750/400*

1850/400

1850/500

Chemical Composition

SiO2

%

37

35

33

28

15

15

Al2O3

%

63

65

67

72

85

85

Classification Temperature

°C

1500

1600

1650

1750

1850

1850

Long-term use Temperature

°C

1420

1480

1600

1700

1800

1800

Density

Kg/m3

300

400

400

400

400

500

Linear Expansion 1400°C / 24h

%

0.4

/

/

/

/

/

1500°C / 24h

%

1.2

0

-0.1

0

/

/

1600°C / 24h

%

/

0.5

0.2

-0.5

-0.3

0

1700°C / 24h

%

/

/

/

0.2

-0.5

-0.2

1800°C / 24h

%

/

/

/

/

0.7

0.4

Thermal Conductivity

800°C

W/m°K

0.14

0.15

0.16

0.14

0.18

0.25

1200°C

W/m°K

0.2

0.22

0.23

0.23

0.28

0.33

1400°C

W/m°K

 

 

0.28

0.29

0.34

0.38

Ignition Loss

%

3

3

5.1

4

6

4

Standard Dimensions

mm

900 * 600

Available Thicknesses

mm

25, 40, 50,

100

20, 25, 40,

50, 100

20, 25, 40, 50

Items 1650-400* and 1750/400* contain refractory ceramic fibres.

Sizal® Board (768.25k)

Technical data sheet: Sizal® Board products.