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Tufnol Grade 10G/40

Tufnol Grade 10G/40 is a high-quality epoxy resin bonded glass fabric laminate. It offers very high mechanical strength and low moisture absorption, combined with excellent electrical properties, under both dry and humid conditions. They are rigid materials with good dimensional stability and good resistance to a wide range of working environments. This is the most widely used grade, suitable for continuous use at temperatures up to approximately 130°C (Class B).

Functions: Laminate

Polymer Name: Epoxy Resins & Compounds

Reinforcement Material: Glass Fibers

End Uses: Cryogenic Applications, Jigs

Technical Data SheetSafety Data Sheet

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Chemical Family
Epoxy & Epoxy Derivatives
Polymer Name
Epoxy Resins & Compounds
Reinforcement Form
Woven Fabric
Reinforcement Material
Glass Fibers
Composite Materials Functions
Laminate
Technologies
Composite Materials
Product Families
Composite Materials — Prepregs & Molding Compounds
Laminates

Features & Benefits

Materials Features
Consistent High Quality,
Dimensional Stability,
Excellent Mechanical Strength,
Good Electrical Properties,
Good Rigidity,
High Performance,
High Strength,
Low Moisture Absorption

Applications & Uses

Markets
Industrial
Applications
Industrial — Chemical & Industrial Manufacturing
Equipment & Parts
Composites End Use
Cryogenic Applications,
Jigs
What is Grade 10G/40 used for?
  • These high-performance materials are used for a very wIde variety of applications where high strength, rigidity dimensional stability and electrical performance are required.
  • Applications such as insulation in large turbine generators, components for cryogenic superconducting magnets, high-strength bolt insulation in structures, jigs for electro-chemical machining and structural insulation for high peformance electronic equipment, these are typical of the many uses to which this material is put.
  • However, due to the abrasive nature of the high glass fiber content, epoxy glass grades are not normally selected for wearing or bearing applications.

Properties

Color
Natural
Physical Form
Fabric,
Rods,
Sheets
Physical Properties
ValueUnitsTest Method / Conditions
Cross Breaking Strength490.0MPa-
Impact Strength (Notched, Charpy)60.0kJ/m²-
Compressive Strength (Flatwise)415.0MPa-
Compressive Strength (Edgewise)300.0MPa-
Tensile Strength355.0MPa-
Youngs Modulus17.7GPa-
Water Absorption (1.6mm Thick)5.0mg-
Water Absorption (3mm Thick)7.0mg-
Water Absorption (6mm Thick)10.0mg-
Water Absorption (12mm Thick)15.0mg-
Electric Strength (Flatwise in Oil, 90°C, 1.6mm Thick)17.0MV/m-
Electric Strength (Flatwise in Oil, 90°C, 3mm Thick)15.0MV/m-
Electric Strength (Flatwise in Oil, 90°C, 6mm Thick)12.0MV/m-
Electric strength (Edgewise in Oil, 90°C)75.0kV-
Insulation Resistance (After Immersion in Water)1 × 10¹¹ohms-
Relative Density1.9--
Loss Tangent (1MHz)0.017--
Permittivity (1MHz)5.0--
Comparative Tracking Index285.0--
Working Temperature (Continuous)max. 130°C-
Working Temperature (Intermittent)max. 150°C-
Thermal ClassificationClass B--
Thermal Conductivity (Through Laminae)0.42W/mK-
Thermal Expansion (Plane of Laminae)1.1 × 10⁻⁵/K-

Regulatory & Compliance

Specifications
British Standards Current Standards Recent Standards (Now Obsolete)
Grade 10G/40 Sheet BS EN 60893-3-2 Type EP GC 201 BS 3953 Type EP-3
Grade 10G/40 Round Rod (Rolled Molded) BS EN 61212-3-3 Type EP GC 41 & 42 BS 6128 Part 2 Type EP GC 21

NEMA* - Grade 10GI40 Sheet & Rod - NEMA L-1-1983 Type G10

*Testing and certification to these standards is subject to special enquiry. Standard quality testing is to British Standards.

 

Packaging & Availability

Types Available
Types Availabe Sheets Rods Tubes Other Sections
Tufnol Grade 10G/40 - Natural Color Yes Yes No No