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Zircar Ceramics DAHP Dense Alumina Hearth Plate

Category Ceramic , Oxide , Aluminum Oxide
Manufacturer Zircar Ceramics
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
ZIRCAR Dense Alumina Hearth Plates are used for supporting loads in high temperature furnaces and other thermal process systems. These dense plates are made of fully sintered fine grain high purity alumina. Designed for use as high load bearing members, they exhibit high strength at operating temperatures as high as 3400°F (1870°C). They are of exceptional high purity and contain only a trace of tramp oxides. Typical Applications:Load bearing members in furnaces and thermal process systems operating as high as 3400°F (1870°C).Hearth plates in rapid cycle furnaces with air atmospheres operating to 3317°F (1825°C).Support plates in furnaces with hydrogen atmospheres operating over  3100°F (1700°C).High temperature setters, supports and process fixtures.Information provided by Zircar Ceramics.
Physical Properties Metric English Comments
Bulk Density 3.20 g/cc
0.116 lb/in³
Porosity 20 %
20 %
Apparent
Permeability 0.000035 - 0.000070
0.000035 - 0.000070
g/s.Pa.m
Mechanical Properties Metric English Comments
Modulus of Elasticity 85.0 GPa
12300 ksi
Modulus of Rupture 0.00689 GPa

@Temperature 1450 °C
1.00 ksi

@Temperature 2640 °F
0.0124 GPa

@Temperature 1250 °C
1.80 ksi

@Temperature 2280 °F
0.0193 GPa

@Temperature 23.0 °C
2.80 ksi

@Temperature 73.4 °F
Compressive Strength 75.8 MPa
11000 psi
Crushing
Thermal Properties Metric English Comments
CTE, linear 8.40 µm/m-°C
4.67 µin/in-°F
30 - 1500°C
Specific Heat Capacity 1.13 J/g-°C
0.270 BTU/lb-°F
Thermal Conductivity 2.30 W/m-K

@Temperature 1200 °C
16.0 BTU-in/hr-ft²-°F

@Temperature 2190 °F
Optical Properties Metric English Comments
Emissivity (0-1) 0.28

@Temperature 1100 °C
0.28

@Temperature 2010 °F
0.38

@Temperature 1500 °C
0.38

@Temperature 2730 °F
0.42

@Temperature 500 °C
0.42

@Temperature 932 °F
Component Elements Properties Metric English Comments
Al2O3 99.55 %
99.55 %
Fe2O3 0.090 %
0.090 %
K2O+Na2O 0.25 %
0.25 %
Other 0.040 %
0.040 %
Other Oxides
SiO2 0.070 %
0.070 %
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