Phenolic XX Round Tube

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Phenolic paper-based (X) tubing has been used extensively through the years in various applications and parts in switch gear, transformers, tap changers, munitions, rockets, bushings, sleeves, coil forms, core tubes and casings. Paper phenolic tubing has excellent electrical properties in high humidity conditions. The combination of the high-temperature resistant phenolic resin and a treated paper convolute wound tube provides excellent strength, weather resistance and electrical resistance. Phenolic XX is commonly used as table saw blade inserts. The "X" designations generally distinguish manufacturing processes which result in different levels of electrical properties (i.e., dielectric strengths). Paper-based phenolics are available in a variety of sheet, rod, and tube sizes. 

  • Excellent Mechanical Properties
  • Excellent Electrical Properties
  • High dimensional stability
  • Chemical, moisture & oil resistance
  • High dielectric strength
  • High strength-to-weight ratio


Typical Physical Properties:

Specific Gravity: 1.35

Tensile Strength: 17,000 psi

Compressive Strength: 35,000 psi

Flexural Strength: 34,000 psi

Hardness, M Scale: 120

Bond Strength: 1500 psi

Shear Strength: 11,500 psi

Dissipation Factor: 0.040 10^6 cycles, Cond A

Dielectric Constant: 5.30 10^6 cycles, Cond A

Electric Strength: 750 V/MIL Cond A

Flammability Rating: 94HB

Max Oper. temp: 140ºC/284ºF

Coefficient Thermal Exp.: 1.20 IN/IN/ºC X 10-5

Water Absorption: 2.00 %- 24 hrs

Izod Impact Strength: 1.80 ft/lb/in @49ºC

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