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Formula: Si₃N₄
Form: Tube
Material: Reaction Bonded Silicon Nitride/Si3N4
Commodity: Ceramics
Inside Diameter: 5mm

Reaction Bonded Silicon Nitride/Si3N4 Tube

Reaction Bonded Silicon Nitride/Si3N4 Tube is a tubular product manufactured by Goodfellow that is made of silicon nitride (Si3N4). Silicon nitride is known for its high strength and fracture toughness at high temperatures. This advanced ceramic material also has excellent thermal shock resistance. Reaction Bonded Silicon Nitride/Si3N4 Tube is available for use in applications that require tubes capable of withstanding very high temperatures, such as gas turbines, heat exchangers, and automotive engines. Goodfellow offers this tubular product in 2 sizes to suit different requirements.
each

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Tolerances

Tube
Outside Diameter =<2mm ±10%
Outside Diameter =<5mm ±10%
Outside Diameter >5mm ±10%
Wall Thickness ±20%

Material Properties for Ceramics

Chemical Resistance
Electrical Properties
Physical Properties
Thermal Properties
Mechanical Properties
Pultrusions
Chemical Resistance
Element Value
Acids - concentrated Fair
Acids - dilute Good
Alkalis Fair
Halogens Good
Metals Fair
Electrical Properties
Element Value
Dielectric constant 10
Volume resistivity( Ohmcm ) >10⁷@25
Physical Properties
Element Value
Apparent porosity( % ) 15-23
Density( gcm⁻³ ) 2.4
Thermal Properties
Element Value
Upper continuous use temperature( C ) 1200-1500
Specific heat( J K⁻¹ kg⁻¹ ) 690@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 10-16@20°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 3.3@20-1000°C
Mechanical Properties
Element Value
Tensile modulus( GPa ) 170-220
Hardness - Vickers( kgf mm⁻² ) 800-1000
Shear strength( MPa ) 190-240
Tensile strength( MPa ) 160
Pultrusions
Element Value
Compressive strength( MPa ) 550-650

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