Tufnol Sheet

Tufnol Whale Sheet is a grade of engineering plastic specifically designed for mechanical engineering purposes. It is made of medium weave cotton and phenolic resin laminated plastic material. This grade offers excellent dimensional stability and can be used either dry or lubricated with water, oils, or grease. It possesses desirable physical properties, including high strength, good toughness, and wear resistance. Tufnol Whale Sheet is suitable for applications requiring wear-resistant components such as bearings, bushes, spacers, and low voltage applications.

Whale Tufnol Sheet offers several advantages, including rigidity with high strength and low weight, good electrical and thermal insulation properties, and resistance to corrosion in metal parts. It exhibits excellent weather resistance and has good resistance to chemicals, oils, solvents, and hydrocarbons.

Whale Tufnol Sheet is suitable for electrical insulation but only at low voltages. Its maximum working temperature is limited to 120 to 130 degrees Celsius, and when machined, it produces a fine yellow dust.

Whale Tufnol Sheet is produced similarly to plywood, making it quite rigid, up to twice as much as nylon. This inherent rigidity reduces creep, providing stability under stress. In comparison to nylon, Whale Tufnol Sheet exhibits less creep under torque, resulting in better bolt retention.

Whale Tufnol Sheet is a versatile material used in a wide range of mechanical applications and general uses. It is commonly used for gears, spacers, jigs and fixtures, wear-resistant components, and low voltage insulation applications.

Whale Tufnol Sheet is not suitable for high electrical insulation applications, circuit boards, or covers.

Whale Tufnol Sheet cannot be melted to reshape it. Finished components are made by machining using conventional machine tools such as saws, drills, lathes, milling machines, or CNC machines. It is easily machined to produce finished components, but delicate parts may be subject to shearing along the lamination.

Whale Tufnol can be bonded to various materials using appropriate adhesives.

Whale Tufnol Sheet should not be used in any food applications that involve direct contact with food products.

Yes, Whale Tufnol Sheet is known for its very good wear resistance and toughness.

Whale Tufnol Sheet has good resistance to chemicals, oils, solvents, and hydrocarbons, although concentrated acids and alkalis may attack the laminates.

Whale Tufnol Sheet is made primarily of cotton sheets and phenolic chemical resin, pre-soaked and cured to create a tightly bonded sheet. Its production process involves high pressure and heat, resulting in a rigid and stable material.

Whale Tufnol Sheet is available in brown or tan colour and in thickness ranging from 1 mm up to 50mm. Thicker materials may be obtained through our sales team.

Whale Tufnol Sheet is an excellent thermal barrier material, providing protection against extreme heat and cold transfer. It is hard, rigid, strong, and lightweight, making it a good electrical insulator and resistant to long-term immersion in water. It exhibits exceptional weather resistance and has been used for outdoor and marine components for many decades without corroding or degrading.

A downside to the production process of Whale Tufnol Sheet is that tolerances can vary due to factors like the number and thickness of individual sheets used, pressure applied by the press, or variations in steel press sheets. It may not be suitable for applications requiring minimal tolerances.

Whale Tufnol Sheet, a Synthetic Resin Bonded Fabric (SRBF), is crafted from medium weave cotton and phenolic resin laminated plastic. As a go-to choice for mechanical applications, it offers exceptional all-around strength, good toughness, wear resistance, and thermal barrier properties. Its versatility and ease of handling make it a preferred option, while its outstanding rigidity ensures reliable performance. Whale Tufnol Sheet stands as a reliable, general-purpose medium weave grade, catering to a wide range of mechanical requirements with unmatched strength and resilience.

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Tufnol 1P/13 Sheet

SRBP - Synthetic Resin Bonded Paper

Mechanical Properties

• Density: 1.36/cm³

• Tensile strength: 164 MPa

• Cross breaking strength: 175 MPa

• Charpy impact strength (notched): 3.9 kJ/m2

• Shear strength (flatwise): 100 MPa

Thermal Properties

• Maximum working temperature – continuous: 90°C

• Maximum working temperature – intermittent: 120°C

• Thermal classification: E

1P/13 Tufnol Sheet offers the following advantages:

• Very strong and rigid plastic

• Lightweight

• Economical

• Reasonable low voltage insulation

1P/13 Tufnol Sheet has the following disadvantages:

• Prone to chipping under high impact

• Not suitable for high voltage applications

• Low flame retardancy

1P/13 Tufnol Sheet is described as the "general purpose" grade and is commonly used for router jigs, fixtures, guides, and basic tooling.

1P/13 Tufnol Sheet is not recommended for high wear applications or for high voltage electrical applications.

1P/13 grade can be machined well with carbide cutters, but it generates a fine yellow dust during the machining process.

1P/13 Tufnol Sheet can be easily bonded with commercially available adhesives such as araldite, epoxies, and contact adhesives.

1P/13 Tufnol Sheet is not suitable for constant contact with food.

1P/13 Tufnol Sheet is more suited for general-purpose use and router jigs, but for high wear resistance, the Whale grade is recommended.

1P/13 Tufnol Sheet does not have high resistance to chemicals or acids.

We stock thicknesses of 1P/13 Tufnol Sheet from 1mm up to 25mm.

1P/13 Grade Tufnol Sheet, an economical commercial paper-based laminate, presents moderate electrical properties. Outshining other phenolic paper grades, it boasts higher mechanical strength and superior impact resistance. Ideal for low voltage insulation applications, this grade allows easy machining for versatile components. Its affordability makes it a practical choice for less demanding mechanical tasks such as spacers, base plates, side plates, and simple jigs and fixtures. Tufnol Sheet 1P/13 delivers reliable performance while remaining cost-effective for various industrial applications.

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Tufnol Kite Sheet

SRBP - Synthetic Resin Bonded Paper

Mechanical Properties

• Density: 1.36/cm³

• Cross breaking strength: 175 MPa

• Charpy impact strength (notched): 2.7 kJ/m2

• Shear strength (flatwise): 350 MPa

• Compressive strength (edgewise): 200 MPa

Thermal Properties

• Maximum working temperature – continuous: 90°C

• Maximum working temperature – intermittent: 120°C

• Thermal classification: E

Kite Tufnol Sheet offers the following advantages:

• Suitable for high voltage applications

• Lightweight

• Rigid and strong

• Economical

Kite Tufnol Sheet has the following disadvantages:

• Prone to chipping under high impact

• Low flame retardancy

Kite grade Tufnol Sheet is more suited to higher voltage electrical insulation applications.

Kite grade Tufnol Sheet is not recommended for general purpose applications as it is not as strong as 1P/13 grade or Whale grade. It is also not suited for high wear applications.

Kite grade Tufnol Sheet machines quite well with carbide cutters, but it generates a fine yellow dust during the machining process.

Kite Tufnol Sheet can be easily bonded with many commercially available adhesives such as araldite, epoxies, and contact adhesives.

Kite Tufnol Sheet is not suitable for constant contact with food.

Kite Tufnol Sheet is more suitable for general-purpose use and can withstand being used as a router jig, but the Whale grade is more designed for wear resistance.

Kite Tufnol Sheet does not have very high resistance to chemicals or acids.

We stock thicknesses of Kite Tufnol Sheet from 1mm up to 25mm.

Kite Tufnol sheet is a first-class electrical insulating material with good dielectric strength and high insulation resistance. It has low moisture absorption and good mechanical strength, but its impact strength is lower than that of most other grades of Tufnol. It machines easily and can be hot punched in thicknesses up to 3.2mm. It is used for a multitude of applications at low, medium, and high voltages, such as terminal boards, mounting panels, tag strips, coil formers, insulating sleeves and bushes, busbar supports, tool and instrument handles, coil supports, insulated enclosures, brush holders, insulating spacers, and special purpose plugs and sockets.

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Tufnol 10G/40 Sheet

SRBGF - Synthetic Resin Bonded Glass Fabric

Mechanical Properties

• Density: 1.90/cm3

• Cross breaking strength: 490 MPa

• Charpy impact strength (notched): 60 kJ/m2

• Tensile strength: 355 MPa

• Young's modulus: 17.7 GPa

Thermal Properties

• Maximum working temperature – continuous: 130°C

• Maximum working temperature – intermittent: 150°C

• Thermal classification: B

10G/40 Tufnol Sheet offers the following advantages:

• High strength

• Rigidity

• Dimensional stability

10G/40 Tufnol Sheet has the following disadvantages:

• SRBGF is very abrasive

• Not suitable for cost-critical lower voltage applications

10G/40 Tufnol Sheet is used for insulation in high-performance electrical applications, structural insulation, and jigs.

Due to the abrasive nature of the high glass fibre content, 10G/40 Tufnol Sheet is not suitable for bearing or wearing applications.

10G/40 Tufnol machines well, but due to its abrasive nature, it can be hard on tooling.

Yes, 10G/40 Tufnol Sheet can be easily bonded with many commercially available adhesives.

No, 10G/40 Tufnol Sheet is not suitable for contact with food.

We stock thicknesses of 10G/40 Tufnol Sheet from 1.6mm up to 16mm, and other sizes may be available to order.

Tufnol Grade 10G/40, also referred to as SRBGF, offers exceptional performance in diverse applications that demand high strength, rigidity, dimensional stability, and electrical properties. It finds common use in insulation for large turbine generators, components of cryogenic superconducting magnets, and structural insulation for high-performance electronic equipment, among others. However, due to the abrasive nature of its high glass fibre content, it is not recommended for wearing or bearing applications. Tufnol Grade 10G/40 remains a top choice for critical roles requiring reliability and resilience.