SoliBlanket CR-Grade

SoliBlanket CR-Grade

SoliBlanket™ CR-Grade

SoliBlanket CR-grade provides the highest classification and continuous use temperature of all melt/spun fibers using Chromium Oxide and utilizing further microcrystalline processing during production. With a classification temperature of 1480°C it is engineered to perform continuously in a wide range of applications up till 1300°C continuously.

It is unaffected by most chemicals and can be used in the most severe operating conditions. SoliBlanket CR-grade is used in special stainless steel furnaces which are heavily polution due to additives in the special grade steel. SoliBlanket CR-grade is offering higher durability then other types of fiber.

SoliBlanket CR-Grade

Datasheets, Media & Downloads





If there is one word to decribe our SoliBlanket CR-grade, the word would be tough. Where a typical RCF-Zr is at 2-3% shrinkage at 1300°C, the Soliblanket CR-grade is just over 1%… And next to the incredibly low shrinkage it also shows extreme durability in poluting atmospheres. It might not be the smoothest fiber, neither is it the best thermal insulating, but SoliBlanket CR-grade goes on were other grades of fibers stop.

Compared to other versions of a Chrome-blanket the Soliblanket CR-grade is stronger, feels more comfortable to handle and provides better thermal insulation. Even when we are manufacturing a very special grade refractory ceramic fiber, like the SoliBlanket CR-grade, the manufacturing advantage of ULS technology, keeps delivering.

SoliBlanket CR-grade is part of the SoliBlanket product range. With a variety of four Refractory Ceramic Fiber (RCF) grades and the famous ‘ULS’ Low Bio Persistence Fiber grade we are offering one of the most extensive ranges of high temperature fiber blankets in the market today. With our  different chemical compositions we are able to provide a solution to nearly every atmosphere or temperature.


  • Proven technical solution
  • Low shot technology
  • Excellent insulation performance
  • High handling strength
  • Unaffected by most chemicals
  • Excellent thermal stability
  • Resistant to thermal shock

Typical applications

  • Insulation lining for furnaces in special stainless steel industry
  • Blanket for module making
  • Chemically stable insulation for Steel Treatment
  • General technical insulation of furnaces and technical installations.


Blanket from high temperature Refractory Ceramic Fiber insulation wool.

Temperature range

SoliBlanket CR-grade has a classification temperature of 1480°C and advised for maximum continuous use at 1300°C.

The maximum continuous use temperature provided on the website is a guideline and only applicable in a clean oxidizing atmosphere.

Product range

SoliBlanket is part of an extensive product range supplied by Vulcor Insulation. Vulcor Insulation is supplying insulation solutions from cryogenic to high temperature applications. All products offered by Vulcor are manufactured in house or sourced from exclusive trusted third party partners.

Technical support

Vulcor Insulation provides specifiers and customers with guidance on all aspects of the materials selection for their application, the installation and compliance with relevant regulations and performance standards.

For additional information about product performance, or to identify the recommended product for your application, please contact the team at Vulcor Insulation.


All SoliBlankets in the special grade product range are available in the most popular densities and dimensions. Available in 96 and 128 kg/m3 density and a thickness range from 13 till 50 mm. All products have been developed to meet requirements specific to the final application.

SoliBlanket is standard supplied in shrink wrap plastic film, and can be supplied in carton boxes. The blankets in shrink wrap are placed on a heat treated export pallet with 24 rolls per pallet. Please refer to list below for availability and dimensions.


Length (mm) Width (mm) Thickness (mm) 96 kg/m3 128 kg/m3
14640 610 13 O
9760 610 19 O O
7320 610 25 O X
4880 610 38 O O
3660 610 50 O X
Standard item X
On request O


Properties measured Standard Unit SoliBlanket CR-grade
Grade RCF
Colour green/blue
Classification temperature °C 1480
Continous use temperature °C 1300
Density kg/m3 96 128
Tensile strength EN 1094-1 kPa 75 90
Permanent Linear Change EN 1094-7 %
@ 1400°C < 2,5
Thermal conductivity ASTM C-201 W/mK
@200°C 0,07 0,06
@400°C 0,10 0,09
@600°C 0,14 0,12
@800°C 0,20 0,18
@1000°C 0,30 0,26
Chemical composition ISO12677 %
SiO2 51 - 54
AI2O3 43 - 46
Cr2O3 2,5 - 3
Fe2O3 < 0,2
Other < 0,25