Sematerm 1260 T and 1260 M


These are insulating panels made of ceramic fiber and organic binders. They are used in metallurgical furnaces as furnace carriages, fire shields and as filling of expansion joints.


Technical data
Working temperature continuous 1000 oC maximum 1260 oC
Thermal conductivity 0,071 W/mK in 400 oC
0,071 W/mK in 800 oC
Line cramps <3% in 1000 oC/24h
Chemical composition 46,00 % Al2O3
51,00 % SiO2
<1,00 % Fe2O3
<0,50 % Na2O + K2O
Available sizes 1000x1000mm
Thickness 10-50mm
Colour white

Semaplan 1100 and 850


These are cardboard sheets made of aluminosilicate fibers with added organic fibers. They are used as thermal insulation and as static seals in fittings with inert gases up to 3 bar.


Technical information
Type of sheets Semplan 1100 Semplan 850
Continuous working temperature 1100 oC 850 oC
Density 960 kg/m3 920 kg/m3
Heat conduction coefficient for selected temperatures 400 oC 0,10 W/mK 0,10 W/mK
600 oC 0,11 W/mK 0,11 W/mK
800 oC 0,13 W/mK 0,13 W/mK
1000 oC 0,14 W/mK
Line cramps 2,6 % in 1000 oC/24h 1,1 % in 850 oC/24h
Loss of roasting 19,10 % 16,80 %



Technical information
Type of sheets Semplan 1100 Semplan 850
Chemical composition Al2O3 34,10 % 24,40 %
SiO2 43,60 % 55,00 %
Fe2O3 0,90 % 1,70 %
TiO2 0,80 % 1,30 %
MgO 0,30 %
CaO 0,60 %
Na2O + K2O 1,00 % 1,50 %
organic fibers 11,50 % 10,00 %


Ceramic mat 1260


Ceramic mat is available in rolls. The length of the is 7320 mm and its thickness is 25 mm.


Technical information
Maximum working temperature 1260 oC
Melting point 1760 oC
Density 130 kg/m3
Heat conduction coefficient for selected temperatures 400oC 0,09 W/mK
600oC 0,12 W/mK
800oC 0,18 W/mK
1000oC 0,28 W/mK
Linear shrinkage 3,3 % w temp. 1250 oC/24h
Proper heat 1,14 kJ/kgK
Al2O3 content 42 % – 47 %
SiO2 content: 53 % – 58 %

Ceramic fabric


Ceramic fibers are made of melted silicon oxide and aluminum in the spinning process. Therefore, white, twisted fibers with high temperature resistance, low thermal conductivity and good chemical resistance are obtained. They have excellent resistance to sudden temperature fluctuations. Since pure ceramic fiber is not allowed to be processed into textile products, organic fibers must be added to allow spinning. In these products the organic part is about 15% (burns on first heating and hence the inevitable loss of glow).

In addition, textile materials are reinforced with glass thread or chrome steel wire. The maximum temperature resistance of glass fiber products is approximately 550°C and wire products for chrome steel can be used up to approximately 1000°C. Considering the influence of medium and mechanical loads on the material. The thermal resistance of non-core products such as wool, mats or paper varies from 1260°C to 1430°C for aluminosilicate fibers or 1600°C for polycrystalline fibers (mullite and corundum). These products are resistant to water, oils, fats, liquid metals and most acids.

Special features of ceramic fiber fabrics are: resistance to continuous temperature stress up to 1600°C, very good thermal insulation properties, low weight, elasticity, resistance to thermal shock, very good electrical insulating properties.