3R2500

Silica

Made of special glass fibers with a filament diameter of 6-9 mm, this silica mat represents a modern product generation that, in any aspect, meets with all stringent requirements as to temperature consistency and environmental health standards.
The fibers are formed mechanically without the use of chemical bonding agents. The 3R2500 keeps a very high chemical and physical stability up to 1832°F.

Applications

Because of its low thermal conductivity it is the ideal raw material for the production of flexible insulating mats. It is easy to cut and is non-combustible. The 3R2500 can be used for the following applications : industrial ovens, chimneys, boilers, steel industry, gas exhaust systems, laboratories and fire protection.

Specifications

Technical Data

Temperature 1 000 °C ( 1 832 °F)
Thickness available 1/4", 1/2", 3/4" and 1"
Density available 8-10 pcf
Chemical composition
SiO2 95%
Al2O3 4%
Na20 1%
Physical properties
Shrinkage at 1 000 °C / 4 hours < 8%
Loss of ignition (1000 °C / 1 hour) < 12%
Combustibility non-combustible
Thermal Conductivity (W/m°K)
Density - 8 lbs/ft3
50°C (122°F) 0.045
200°C (392°F) 0.060
400°C (752°F) 0.104
600°C (1112°F) 0.172
800°C (1472°F) 0.263
1000°C (1832°F) 0.377
Density - 10 lbs/ft3
50°C (122°F) 0.046
200°C (392°F) 0.064
400°C (752°F) 0.113
600°C (1112°F) 0.186
800°C (1472°F) 0.281
1000°C (1832°F) 0.396
Absorption coefficients
400 Hz 0.14
500 Hz 0.24
800Hz 0.44
1000 Hz 0.58
2000 Hz 0.87
4000 Hz 0.96
5000 Hz 0.98
10 000 Hz 0.94
N.B. The information, details and values indicated are to the best of our knowledge. We recommend to conduct tests according to local conditions. The data is subject to some variations without notice.