Nextel™ 312

Note: This is a variation of Nextel 312 Woven Ceramic Fiber Fabrics (2300ºF+ Abrasion Resistant Fabrics).

3M™ Nextel™ Continuous Filament Ceramic Oxide Fibers 312, 440, 550, 610, 650 and 720

Introduction
3M™ Nextel™ Continuous Filament Ceramic Oxide Fibers 312, 440, 550, 610, 650 and 720 represent a major advancement in refractory fiber technology. These metal oxide fibers can be readily converted into textiles which meet demanding performance requirements in high temperature operating environments. Fabrics, paper, tapes, sleevings and yarn are typical products.

Additionally, the fibers have low elongation and shrinkage at operating temperatures, which allow for a dimensionally stable product to be made. These novel fibers also offer good chemical resistance, low thermal conductivity, thermal shock resistance, low porosity and uniqucell namelectrical properties.

Because the filaments are continuous and strong, ceramic oxide textiles can be produced without the aid of other fibers or wire inserts.

Industrial Fibers
Nextel Ceramic Fibers 312 and 440, when converted to fabrics, tapes, sleevings, and paper are used in the aerospace, industrial, automotive, electrical and petrochemical markets as heat shields, curtains, linings, insulation, blankets and seals. Our newest product. Nextel Flame Stopping Dot Paper, engineered with Nextel Fiber 312. Is Ideal in applications where both flame barrier properties and light weight are critical.

Nextel Ceramic Fiber 550 is used in the electronic market for both insulation and seals.

Composite Fibers
Nextel Ceramic Fibers 610, 650 and 720 are used in ceramic and metal matrix composites. Nextel Ceramic Fiber 610 is noted for It’s outstanding single filament tensile properties. Nextel Ceramic Fiber 720 finds applications in ceramic matrix composites because of it’s high creep resistance. And Nextel Ceramic Fiber 650 blends properties of each having higher single filament tensile properties than Nextel Ceramic Fiber 720 and higher creep resistance than Nextel Ceramic Fiber 610.

Specifications

Surface Area ( m²/g )<0.2
Filament Diameter ( µm )10 to 12
Crystal Size ( nm )<500
Nomenclature Fiber TypeA=312
B=440
C=550
D-610
E=650
F=720
Nomenclature Textile TypeC=Chopped
F=Fabric
M=Mat
N=Nonwoven Paper
P=Tape
S=Sleeving
T=Thread
Density ( g/cc )2.70
Melting Point ( ºC )1800
Melting Point ( ºF )3272
Chemical CompositionAl2O3 - 62.5%
B2O3 - 13%
SiO2 - 24.5%
Sizing ColorWhite
Denier / Nominal Filament Count ( g/9000 m )1800/750
600/400
900/400
Tex / Nominal Filament Count ( g/1000 m )67/400
100/400
200/750
Crystal PhaseMullite + Amorphous (or 100% Amorphous)
Refractive Index1.568
Filament Tensile Strength (25.4 mm Gauge) ( MPa )1700
Filament Tensile Strength (25.4 mm Gauge) ( ksi )250
Filament Tensile Modulus ( GPa )150
Filament Tensile Modulus ( msi )22
Thermal Expansion (100-1100ºC)3 ppm/ºC at (25-500ºC)
Dielectric Constant (at 9.375 GHz)5.2
Loss Tangent (at 9.375 GHz)0.018
Specific Heat at 500ºC (932ºF) ( cal/g/ºC )0.25
Specific Heat at 500ºC (932ºF) ( BTU/lb/ºF )0.25

Additional Information

Introduction
3M™ Nextel™ Continuous Filament Ceramic Oxide Fibers 312. 440. 550. 610. 650 and 720 represent a major advancement in refractory fiber technology. These metal oxide fibers can be readily converted into textiles which meet demanding performance requirements in high temperature operating environments. Fabrics, paper, tapes, sleevings and yarn are typical products.
Additionally, the fibers have low elongation and shrinkage at operating temperatures, which allow for a dimensionally stable product to be made. These novel fibers also offer good chemical resistance, low thermal conductivity, thermal shock resistance, low porosity and uniqucell namelectrical properties.
Because the filaments are continuous and strong, ceramic oxide textiles can be produced without the aid of other fibers or wire inserts.

Industrial Fibers
Nextel Ceramic Fibers 312 and 440, when converted to fabrics, tapes, sleevings. and paper are used in the aerospace, industrial, automotive, electrical and petrochemical markets as heat shields, curtains, linings, insulation, blankets and seals. Our newest product. Nextel Flame Stopping Dot Paper, engineered with Nextel Fiber 312. Is Ideal in applications where both flame barrier properties and light weight are critical.

Applications

Woven ceramic fabrics and woven industrial fabrics from 3M allow engineers ancell nameesigners with high temperature applications to create new. imaginative solutions for previously impossible problems.

3M™ Nextel™ Woven Ceramic Fabrics are designed to meet the toughest thermal, mechanical and electrical performance requirements. Nextel Woven Ceramic Fabrics outperform the useful limits of other high temperature textiles such as aramids, carbon, glass or quartz. Nextel Woven Ceramic Fabrics arcell namengineered to perform at continuous temperatures up to 2200ºF(1204ºC).

When used in industrial furnaces, Nextel Woven Ceramic Fabrics can serve as thermal barriers to separate different temperature zones or the fabrics can serve to prevent particulate shedding.

3M™ Woven Industrial Fabrics handle high temperature situations ranging between 1292ºF-1500ºF (700ºC-815ºC). perfect for applications such as hot gas filtration.

Some typical applications of Nextel Woven Ceramic Fabrics and 3M Woven Industrial Fabrics are as follows:

Aerospace

  • Radomes
  • Thermal shields
  • Micrometeorite debris shields
  • Polymer-matrix composites
Automotive
Industrial
  • Furnace linings galvanized steel furnaces
  • Furnace zone dividers
  • Door seals
  • Tube seals
  • Gaskets
  • Expansion Joints

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