WOOL 50

Range
Sintered
Subtitle

Sintered 50% chrome-alumina

Description

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

Chemical and physical properties

Microstructure

Image
WOOL 50 microstructure

Typical chemical composition

 
 

Typical crystallographic analysis

Main phase: 

  • Cr2O3-Al2O3 solid solution
  • monoclinic zirconia

Physical characteristics

Description International standards British standards
Cold crushing strength 180Mpa 26,107psi
Refractoriness under load 2 105Pa, 0.5% at 1,720°C 3,130°F
Coefficient of thermal expansion 8.5 10-6K-1 4.7 10-6°F-1
Thermal conductivity at 1,000°C 2.6W.m-1.K-1 18BTU in hr-1ft-2°F-1
Thermal shock resistance very good very good
Porosity 15% 15%
Typical bulk density 3.54g/m3 221pcf

Typical application

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

WOOL 50 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 is also a potential material for overcoating applications.

 

Related products

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ZIRCHROM 30

Sintered 30% chrome-alumina and AZS

Good corrosion and thermal shock resistance.

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ZIRCHROM 50

Sintered 50% chrome-alumina and AZS

High corrosion resistance.

Sintered
Expendables

ZIRCHROM 85

Sintered 85% high chrome

Very high corrosion resistance with high thermal-mechanical properties.

Monolithics

WOOL 50 MORTAR

High chrome mortar for bottom solutions

Chrome mortar with high corrosion resistance.