ER 1681® RN

Fused cast

Regular cast, electrofused Alumina-Zirconia-Silica (AZS) with 32% zirconia

Good castability Alumina-Zirconia-Silica (AZS) enabling complex and varied shapes and sizes.

Typical application Chemical and physical properties Storage
Fused cast

Typical application

The regular cast, electrofused Alumina-Zirconia-Silica (AZS) with 32% zirconia, ER 1681 RN is used in 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 3.5g/cm3 218pcf

Expansion curve

Expansion curve fused cast ER 1681 RN

Thermal conductivity curve

Thermal conductivity curve fused cast ER 1681 RN

Electrical resistivity curve

Electrical resistivity curve fused cast ER 1681 RN

Storage

The regular cast, electrofused Alumina-Zirconia-Silica (AZS) with 32% zirconia, ER 1681 RN must be stored in a dry environment protected from weather conditions.

Related products

Fused cast
Expendables

ER 1681® RT

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.

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Fused cast

ER 1851 RN LOWEX®

Regular cast electrofused Alumina-Zirconia-Silica (AZS) with 36% zirconia and a low silicate phase (14%)

Low exudation and high creep resistance.
Good resistance to alkali vapour and carry over.

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Fused cast

JARGAL® M RN

Regular cast, electrofused 95% alumina (alpha-beta alumina)

Excellent glass contact properties with extremely low defect potential.
High resistant to alkali vapor and creep for superstructure application.

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Fused cast

ER 1711® RT

Void-free electrofused alumina-zirconia-silica (AZS) with 40% zirconia solution

Alumina-zirconia-silica (AZS) material with highest corrosion resistance and good castability for various shapes and sizes. It is essentially free of casting cavities and allows a very homogeneous internal structure and corrosion resistance.

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Sintered

BPAL M

Sintered high-alumina 93%

High alumina content sintered material. Very good glass contact properties with the low glass defect potential.
Available in complex and large shapes.

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Expendables

ZA33

Bonded alumina-zirconia-silica (AZS) with 10% zirconia

ZA33 is adapted for most of the standard feeder expendable applications.

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