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
  • available with TuckPro solution

Discover TuckPro solution

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 ≥350Mpa ≥50,763psi
Typical bulk density 3.5g/cm3 218pcf

Expansion curve

0.00.20.40.60.81.01.21.402004006008001,0001,2001,400Linear expansion (%)Temperature (°C)
EXPANSION ER 1681

Thermal conductivity curve

0123456789101102004006008001,0001,2001,4001,6001,800Thermal conductivity (W/(m⋅K)Temperature (°C)
CONDUCTIVITY ER 1681

Electrical resistivity curve

Temperature (°C)Electrical resistivity (ohm-cm)800.00710.00900.00500.001,000.00370.001,100.00220.001,200.00160.001,300.00120.001,400.00110.001,500.0090.001,600.0081.00ER 16811101001,00010,0008009001,0001,1001,2001,3001,4001,5001,600Electrical resistivity (ohm-cm)Temperature (°C)
RESISTIVITY ER 1681

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.

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

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