Description
Phenolic XX Round Tube Description
Phenolic XX (Paper-based) Round Tubing is an industry-standard material used extensively in electrical and mechanical applications due to its outstanding electrical properties, even in high humidity conditions. The material is made by impregnating layers of high-quality treated paper with phenolic resin, followed by a convolute winding process that enhances its strength and dimensional stability. The "XX" designation indicates the material's superior dielectric properties, making it ideal for electrical insulation in demanding environments. This tubing is commonly used in transformers, switchgear, tap changers, munitions, and various other applications where high strength-to-weight ratios and excellent electrical resistance are required.
Notable Attributes
Notable Attributes
- Excellent Mechanical Properties: Provides high tensile, compressive, and flexural strength, making it suitable for high-stress applications.
- Superior Electrical Properties: High dielectric strength and excellent electrical insulation, even under high humidity conditions.
- High Dimensional Stability: Maintains its shape and strength across a wide range of temperatures and environmental conditions.
- Chemical, Moisture & Oil Resistance: Resistant to most chemicals, moisture, and oils, ensuring long-term durability in harsh environments.
- High Strength-to-Weight Ratio: Offers robust strength while remaining lightweight, reducing the overall weight of the equipment.
Applications
Applications Include:
- Switchgear: Provides reliable insulation in high-voltage electrical switchgear systems.
- Transformers: Used as insulating sleeves and casings in transformers.
- Tap Changers: Ensures safe and efficient operation in tap changers within electrical transformers.
- Munitions: Provides structural integrity and insulation in munitions and rockets.
- Bushings and Sleeves: Used in various mechanical applications for bushings, sleeves, and coil forms.
- Table Saw Blade Inserts: Commonly used for table saw blade inserts due to its durability and electrical insulation properties.
Technical Specifications
Technical Specifications
- 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 at 10^6 cycles, Cond A
- Dielectric Constant: 5.30 at 10^6 cycles, Cond A
- Electric Strength: 750 V/MIL Cond A
- Flammability Rating: UL 94HB
- Maximum Operating Temperature: 140ºC/284ºF
- Coefficient of Thermal Expansion: 1.20 IN/IN/ºC x 10^-5
- Water Absorption: 2.00% after 24 hrs
- Izod Impact Strength: 1.80 ft/lb/in @49ºC
Phenolic Comparison Chart
Phenolic Comparison Chart
For detailed comparisons between different grades of Phenolic, please refer to the Phenolic Comparison Chart. This document provides comprehensive details on the mechanical, electrical, and thermal properties of various Phenolic grades, helping you choose the best material for your application.