3M Nextel™ 550 Industrial Ceramic Fiber

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3M Nextel™ 550 Industrial Ceramic Fiber
Categories:	Ceramic; Oxide; Aluminum Oxide; Silicon Oxide; Other Engineering Material; Composite Fibers
Material Notes:	Chemical composition above is wt%. Crystal phases are gamma alumina amorphous SiO₂. Filament diameter is 10-12 µm. 3M Nextel fibers 312, 440, and 550 are designed for non-structural applications where their primary purpose is to act as a flame barrier. 3M Nextel Ceramic Fiber 550 is made from Al₂O₃, SiO₂, and B₂O₃. Because 550 does not contain B₂O₃, this composition retains its strength better at high temperature. Information provided by 3M Ceramic Textile and Composites.
Key Words:	Alumina, Aluminum Oxide
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Physical Properties	Metric	English	Comments

Density	3.03 g/cc	0.109 lb/in³
Particle Size	<= 0.50 µm	<= 0.50 µm	Crystal size
Specific Surface Area	<= 0.20 m²/g	<= 0.20 m²/g

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	2000 MPa @Thickness 25.4 mm	290000 psi @Thickness 1.00 in	gauge filament
Tensile Modulus	193 GPa	28000 ksi	Filament property

Thermal Properties	Metric	English	Comments
CTE, linear	5.30 µm/m-°C @Temperature 100 - 1100 °C	2.94 µin/in-°F @Temperature 212 - 2010 °F
Melting Point	1800 °C	3270 °F

Optical Properties	Metric	English	Comments
Refractive Index	1.602	1.602

Component Elements Properties	Metric	English	Comments
Al2O3	73 %	73 %
SiO2	27 %	27 %

Descriptive Properties
Color	Blue

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CMMM02 / 1614

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