An economical commercial paper grade

Tufnol Grade 1P/13 is a low cost commercial paper based laminate, produced to meet the need for an economical material where electrical requirements are moderate. As a good basic, low voltage insulation material, this grade has a higher mechanical strength than the other grades in our phenolic paper range and greater impact strength. It can be machined readily and components can be hot punched in thicknesses up to 3.2mm.

What is Grade 1P/13 used for?

This material is used for many electrical components where low voltage insulation is required.  In addition, the low cost and all round properties of Grade 1P.13 make it a popular choice for many less demanding mechanical duties.  Consequently, it is used for a multitude of different engineering parts, such as spacers, base plates, side plates, and simple jigs and fixtures, in addition to the usual range of electrical insulation components. 

TYPES AVAILABLE

Sheets

Natural colour Grade 1P/13

Yes

Black Grade 1P/13

Yes*

BRITISH STANDARDS

Current Standards

Recent Standards

(now obsolete)

Sheet

BS EN 60893-3-4 Type PF CP 201

BS 2572 Type P1

PROPERTY

TYPICAL RESULT

UNITS

Cross breaking strength

175

MPa

Impact strength, notched, Charpy

3.9

kJ/m²

Shear strength, flatwise

100

MPa

Tensile strength

164

MPa

Youngs modulus

10.4

GPa

Water Absorption

- 1.6mm thick.

65

mg

- 3mm thick.

80

mg

- 6mm thick.

100

mg

- 12mm thick.

150

mg

Electric strength, flatwise in oil at 90ºC

- 1.6mm thick.

10

MV/m

- 3mm thick.

6.2

MV/m

- 6mm thick.

4.0

MV/m

Electric strength, edgewise in oil at 90ºC

25

kV

Insulation resistance after immersion in water

5x10⁸

ohms

Loss tangent at 1 MHz

0.04

-

Permittivity at 1 MHz

5.4

-

Relative density

1.36

-

Maximum working temperature**

- continuous

90

ºC

- intermittent

120

ºC

Thermal classification

Class E

-