company tower banner
Tufnol Company Logo

Tufnol Grade 2F/14

Tufnol Grade 2F/14 is a cotton fabric laminate with enhanced electrical properties, specially developed to meet the requirements of the relevant British Standard specification.

Functions: Laminate

Polymer Name: Phenolic Compound

Reinforcement Material: Cotton

End Uses: Coil Former, Slot Wedge, Stator Packings

  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Polymer Name
Reinforcement Form
Reinforcement Material
Composite Materials Functions

Features & Benefits

Applications & Uses

What is Grade 2F/14 used for?
  • It is used for electro-mechanical applications where the benefits of mechanical toughness and wear resistance are combined with a need for good insulation resistance.
  • Typical uses include slot wedges, stator packings, coil formers and operating arms.

Properties

Color
Physical Form
Physical Properties
ValueUnitsTest Method / Conditions
Cross Breaking Strength115.0MPa
Impact Strength (Notched, Charpy)7.0kJ/m²
Compressive Strength (Flatwise)290.0MPa
Compressive Strength (Edgewise)215.0MPa
Resistance to Compression (Flatwise)1.4%
Shear Strength (Flatwise)80.0MPa
Water Absorption (1.6mm Thick)50.0mg
Water Absorption (3mm Thick)60.0mg
Water Absorption (6mm Thick)80.0mg
Water Absorption (12mm Thick)90.0mg
Electric Strength (Flatwise in Oil, 90°C, 1.6mm Thick)9.0MV/m
Electric Strength (Flatwise in Oil, 90°C, 3mm Thick)7.5MV/m
Electric Strength (Flatwise in Oil, 90°C, 6mm Thick)6.0MV/m
Electric strength (Edgewise in Oil, 90°C)35.0kV
Insulation Resistance (After Immersion in Water)5 × 10¹⁰ohms
Loss Tangent (1MHz)0.047
Permittivity (1MHz)4.8
Relative Density1.33
Working Temperature (Continuous)max. 120°C
Working Temperature (Intermittent)max. 130°C
Thermal ClassificationClass E

Regulatory & Compliance

Specifications
British Standards Current Standards Recent Standards (Now Obsolete)
Sheet BS EN 60893-3-4 Type PF CC 202 BS 2572 Types F4 & F5

Packaging & Availability

Types Available
Types Availabe Sheets Rods Tubes Other Sections
Natural Color Yes No No No