ER 1681® RT

Fused cast
Expendables

Void-free electrofused alumina-zirconia-silica (AZS) with 32% zirconia

Alumina-zirconia-silica (AZS) with good castability enabling complex and varied shapes and sizes. Void-free structure enabling longer lifetime.

Typical application Chemical and physical properties Storage
Fused cast

Typical application

The void-free electrofused alumina-zirconia-silica (AZS) with 32% zirconia, ER 1681® RT solution provides a high corrosion resistance for a very large range of applications:

  • superstructures, including crowns
  • glass-contact working end and feeders for sodalime and insulation glass fiber

Chemical and physical properties

Microstructure

Microstructure of ER 1681

Typical chemical composition

 
 

Typical crystallographic analysis

 
 

Physical characteristics

Description International standards British standards
Refractoriness under load of 2.105 Pa (2kg/cm²) 1,700°C 3,092°F
Cold crushing strength 300Mpa 43,511psi
Typical bulk density 3.72g/cm3 232pcf

Expansion curve

Expansion curve fused cast ER 1681 RT

Thermal conductivity curve

Thermal conductivity curve fused cast ER 1681 RT

Electrical resistivity curve

Electrical resistivity curve fused cast ER 1681 RT

Storage

The void-free electrofused alumina-zirconia-silica (AZS) with 32% zirconia, ER 1681® RT solution must be stored in a dry environment protected from weather conditions.

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