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3M Nextel™ 440 Industrial Ceramic Fiber

Category Ceramic , Oxide , Aluminum Oxide , Silicon Oxide , Other Engineering Material , Composite Fibers
Manufacturer 3M
Trade Name Nextel™
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF 3M Nextel™ 440 Industrial Ceramic Fiber.pdf
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Material Notes:
Chemical composition above is wt%. Crystal phases are gamma alumina + mullite + 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 440 is made from Al2O3, SiO2, and B2O3. Because B2O3 is present, this composition has both crystalline and glassy phases. The glassy phase helps the fiber retain strength after exposure to high temperatures because it slows the growth of crystalline phases that weaken the fiber. However, when the fiber is stressed at high temperature, the glassy phase weakens the fiber due to viscous flow much like a glass fiber.Information provided by 3M Ceramic Textile and Composites.
Physical Properties Metric English Comments
Density 3.05 g/cc
0.110 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
filament
Modulus of Elasticity 190 GPa
27600 ksi
Filament in Tension
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
Specific Heat Capacity 1.13 J/g-°C

@Temperature 500 °C
0.270 BTU/lb-°F

@Temperature 932 °F
Melting Point 1800 °C
3270 °F
Optical Properties Metric English Comments
Refractive Index 1.614
1.614
Component Elements Properties Metric English Comments
Al2O3 70 %
70 %
B2O3 2.0 %
2.0 %
SiO2 28 %
28 %
Electrical Properties Metric English Comments
Dielectric Constant 5.7

@Frequency 9.375e+9 Hz
5.7

@Frequency 9.375e+9 Hz
Dissipation Factor 0.015

@Frequency 9.375e+9 Hz
0.015

@Frequency 9.375e+9 Hz
Descriptive Properties Value Comments
Color Coral
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