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Dense Alumina Hearth Plate Type DAHP
DAHP hearth plates are normally used as hearth plates in rapid cycle furnaces with air atmospheres operating to 3317°F (1825°C) . They may be positioned directly on the furnace floor or supported with hearth posts such as Reticulated Alumina Hearth Post Type RAHP.
These plates are also useful in furnaces with hydrogen atmospheres operating over 3100°F (1700°C). They are of exceptional high purity and contain only a trace of tramp oxides.
|CHARACTERISTICS & PROPERTIES|
|Chemical Analysis, %|
|K2O & Na2O||0.25|
|Maximum use temperature, °F (°C)||3400 (1870)|
|Bulk Density, g/cc||3.2|
|Apparent Porosity, %||20|
|Modulus of Elasticity, GPa||85|
|Modulus of Rupture, psi|
|Crushing Strength, Room Temperature, psi||11000|
|Linear Thermal Expansion, 30-1500°C, °C||8.4 x 10-6|
|Thermal Conductivity, BTU-in./hr.ft.2 (W/m·K)|
|2200°F (1200°C)||16.0 (2.3)|
|Specific Heat, BTU/lb.°F||.27|
|Permeability Range, g/S.Pa.m)||35-70 x 10-6|
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.
MATERIAL SAFETY DATA SHEET
STANDARD HEARTH PLATE
SHIP WT. (lb.)
|DAHP, 6in.W x 6in.L x 0.50in.T||$117.00||5|
|DAHP, 8in.W x 8in.L x 0.75in.T||$150.50||6|
|* Note: Prices shown apply to sales within the United States. Contact us for information regarding international commerce.|
To place your order, please click the respective "ORDER" button next to the item you wish to purchase. To view your shopping cart click the button to the right. For more info -click here-
Standard hearth plates are available for immediate shipment from stock.
Allowable Warpage 3%.
Custom plates, tubes, muffles, kiln furniture, other shapes and preparations are available on request.
Variations such as Dense Alumina Hearth Plate Type DAHPB and DAHPC are available on a custom basis. These alternate grades differ from DAHP in that their alternate processing produces slightly different physical properties - making them better suited for some applications.
|Modulus of Elasticity, GPa||75||90|
|Modulus of Rupture, psi|
|Crushing Strength, Room Temperature, psi||8000||13000|
Please contact us with your special requirements. We are pleased to contact you if you would like more information or want to discuss custom product availability and pricing.
Standard plates: order online or specify quantity, item # and description.
Custom plates: specify quantity and size. Example: 24ea, DAHP, 7.5in.W x 6in.L x .75in.T
Custom plates, shapes and preparations: specify quantity and description (by supplying drawings, sketches, written descriptions or material specifications).
Copyright © 2001 ZIRCAR Ceramics, Inc.