ALFISO

HIGH TEMPERATURE BOARD
GENERAL INFORMATION

ALFISO high temperature boards are rigid self-supporting insulation products manufactured from high alumina ceramic fiber, high temperature mullite fiber and binders, with vacuum forming process.

These boards are shot free, provide extra low thermal conductivity, and thermal stability at elevated temperatures, and resist chemical attack except hydrofluoric acid, phosphoric acid and strong alkalies.

Additional hardness and strength can be reached with post treatments.
 
PROPERTIES
Characteristics
1500/450
1600/300
1600/450
1700/400
1750/350
1750/500
Classification Temp.
1500℃
1600℃
1600℃
1700℃
1750℃
1750℃
bulk density [kg/m3]
400-500
280-350
400-500
350-450
300-400
450-550
Linear shrinkage [%]
at 1300℃
at 1400℃
at 1500℃
at 1600℃
at 1700℃
at 1750℃
 
2.5
4.0
--
--
--
--
--
1.0
1.0
2.0
--
--
1.5
2.5
--
3.0
--
--
--
--
--
0.5
3.5
--
--
--
--
-0.2
-0.1
0.5
--
--
--
0.2
0.4
2.0
Chemical Analysis [%]
Al2O3
SiO2
ZrO2

71
28
 

67
31

73
27

 
86
14
 


78
22
 
 
 
88
12
 
Thermal conductivity [W/mK]
at 800℃
at 1000℃
at 1200℃
at 1400℃
 

0.25
0.28
0.32
--

 
0.13
0.18
0.24
--

 
0.25
0.28
0.32
--


--
--
0.26
0.31

 
--
--
0.25
0.30 


--
--
0.28
0.33
Specific heat [kJ/kgK]
1.04
1.04

1.04
 

1.04
 

1.04
 

1.04
 
Dielectric strength [V/mm]
3000
3000
3000
3000
1.04
1.04

PRODUCT FORMS

  • DN: Dried
  • DS: Surface hardened
  • DC: Completely hardened
  • FN: Fired
  • FS: Fired and surface hardened
  • FC: Fired and completely hardened
TYPICAL APPLICATIONS
  • Furnace linings  
  • Hot gas duct linings

  • Fire protection systems

  • Refractory backup insulation

  • Launder cover

  • High temperature gasket and seals
  • Distribution systems for molten metals
ADVANTAGES

  • High temperature stability

  • Low thermal conductivity

  • Low heat storage

  • Good flexural and compressive strength

  • Excellent corrosion resistance

  • Thermal shock resistance

  • Easy to cut, drill or saw
AVAILABILITY
  • Thickness: 25-80mm
  • Dimension: 900 x 600mm 
  • Custom size or density available upon request

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Data are base on average test results conducted under standard procedures and are subject to variation on individual test. This  information is for illustrative purposes only and is not intended to create any contractual obligation. For additional information of product performance or to identify the recommended product for your application, please contact ALFISO.
 
TANGSHAN ALFISO REFRACTORY FIBER CO., LTD.
Lutai Economic-Technological  Development Area, Ninghe, Tianjin, China 301505
Tel:+86-22-69386101/02 Fax:69386100  eMail: info@alfiso.com
 
  

 

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