WOOL 50 LF

Range
Sintered
Subtitle

Bonded 50% chrome-alumina

Description

High corrosion resistance combined with a high thermal shock resistance. Good homogeneity with reduced chrome sublimation and linear thermal expansion.

Chemical and physical properties

Microstructure

Image
WOOL 50 LF microstructure

Typical chemical properties

 
 

Typical crystallographic analysis

Main phase:

  • Cr2O3-Al2O3 solid solution
  • monoclinic zirconia

Physical characteristics

Description International standards British standards
Cold crushing strength 75Mpa 10,878psi
Refractoriness under load 2 105Pa, 0.5% at 1,477°C 2,691°F
Coefficient of thermal expansion 8.2 10-6K-1 4.5 10-6°F-1
Thermal conductivity at 1,000°C 2.6W.m-1.K-1 18BTU in hr-1ft-2°F-1
Porosity 13.7% 13.7%
Typical bulk density 3.5g/cm3 218pcf

Typical application

Mainly used for glass contact and superstructure application for insulation glass furnaces.

WOOL 50 LF is made of grains from a unique manufacturing process, the very specific chemical and crystallographic structure provides high corrosion resistance with several others benefits such as :

  • smooth corrosion profile,
  • lower joint corrosion thru better joint closure after heat-up,
  • good electrical resistivity,
  • lower chrome sublimation.

For crown application, refer to ZIRCHROM HC.

WOOL 50 LF is also a potential material for overcoating applications.

Related products

Sintered

WOOL 50

Sintered 50% chrome-alumina

High corrosion resistance. Good homogeneity with reduced chrome sublimation and linear thermal expansion.

Monolithics

WOOL 50 MORTAR

High chrome mortar for bottom solutions

Chrome mortar with high corrosion resistance.