Unifrax Fiberfrax® 440 Ceramic Fiber Paper

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Unifrax Fiberfrax® 440 Ceramic Fiber Paper
Categories:	Ceramic; Oxide; Aluminum Oxide; Silicon Oxide
Material Notes:	440 paper is a low-cost, high-strength composite paper made from a combination of ceramic fiber, inert fillers, and reinforcing fiberglass. The fiberglass gives added strength to the 440 paper at operating temperatures between 450 and 1300°F. This product is formulated with a fire retardant smoke suppressant reducing the effects of the organic binder burnout. Information Provided by Unifrax I LLC
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Physical Properties	Metric	English	Comments

Density	0.208 g/cc	0.00752 lb/in³
Loss On Ignition	9.5 %	9.5 %	including binder

Mechanical Properties	Metric	English	Comments
Tensile Strength at Break	0.310 MPa	45.0 psi	As manufactured
Tensile Strength, Yield	0.593 MPa	86.0 psi	As manufactured
Compressive Strength	0.0345 MPa	5.00 psi	10% deformation
	0.234 MPa	34.0 psi	25% deformation
	3.37 MPa	489 psi	50% deformation

Thermal Properties	Metric	English	Comments
Melting Point	982 °C	1800 °F
Maximum Service Temperature, Air	704 °C	1300 °F	Recommended Operating Temperature

Component Elements Properties	Metric	English	Comments
Al2O3	32 - 35 %	32 - 35 %
Fe2O3	<= 2.0 %	<= 2.0 %
SiO2	42 - 46 %	42 - 46 %

Descriptive Properties
Color	Gray
Na₂O₃ (%)	<2
Temperature Grade (°C)	870

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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