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	Original Value	Comments

Density	13.0 lb/ft³
Loss On Ignition	9.5 %	including binder

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	45.0 psi	As manufactured
Tensile Strength, Yield	86.0 psi	As manufactured
Compressive Strength	5.00 psi	10% deformation
	34.0 psi	25% deformation
	489 psi	50% deformation

Thermal Properties	Original Value	Comments
Melting Point	982 °C
Maximum Service Temperature, Air	704 °C	Recommended Operating Temperature

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

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

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