A quality electrical paper grade with enhanced fire and smoke properties

This is an insulating sheet material with electrical qualities similar to Kite Brand TUFNOL but with the additional features of improved fire properties.  TUFNOL Grade 1P/24 is manufactured with a specially formulated phenolic resin, which provides flame retardant properties combined with much reduced smoke output in a fire.  It is a good electrical insulating material meeting the requirements of BS EN 60893-3-4 Type PF CP 206 (and the former BS 2572 Type P3) and it also meets Class FV0 flammability in the BS 6334 (IEC 707) test.  In addition, it achieves Class 1 performance in the BS 476 Part 7 ‘Surface spread of flame’ test.

What is Grade 1P/24 used for?

Grade 1P/24 is used in electrical applications where a high quality electrical insulating sheet is required with the additional protection of improved fire properties.  Many conventional insulation applications would benefit from the use of flame retardant materials and the low smoke and good spread of flame performance offered by Grade 1P/24 is of particular importance in areas where escape from fire may be restricted.  It can be used for items such as terminal boards, mounting plates, busbars and cable supports in railway applications, ships and ferries and a wide range of underground and restricted access areas

TYPES AVAILABLE	Sheets
Natural colour Grade 1P/24	Yes

Minimum order quantities may apply.

Click here for TUFNOL Grade 1P/24 Standard Sizes

SPECIFICATIONS for TUFNOL Grade 1P/24

BRITISH STANDARDS	Current Standards	Recent Standards (now obsolete)
Sheet	BS EN 60893-3-4 Type PF CP 206 plus Flammability category FV0 plus BS 476 Part 7 Surface Spread of Flame Class 1	BS 2572 Type P3

Standard quality testing is to British Standards.

PHYSICAL PROPERTIES

TUFNOL Grade 1P/24 Sheet

PROPERTY	TYPICAL RESULT	UNITS
Cross breaking strength	150	MPa
Shear strength, flatwise	90	MPa
Water Absorption
- 1.6mm thick.	50	mg
- 3mm thick.	65	mg
- 6mm thick.	80	mg
Electric strength, flatwise in oil at 90ºC
- 1.6mm thick.	11	MV/m
- 3mm thick.	9	MV/m
Electric strength, edgewise in oil at 90ºC	45	kV
Insulation resistance after immersion in water	5x109	ohms
Loss tangent at 1 MHz	0.040	-
Permittivity at 1 MHz	5.4	-
Flammability category	FV0	-
Relative density	1.36	-
Maximum working temperature**
- continuous	90	ºC
- intermittent	120	ºC
Thermal classification	Class E	-

Test methods as BS EN 60893-2, where applicable.

**Users of highly stressed components at temperatures approaching the maximum are recommended to seek further advice from Tufnol Composites Ltd.

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A full machining service is available from Tufnol Composites Ltd for this and many other engineering plastics and composites.

Tufnol Composites Ltd, Wellhead Lane, Perry Barr, Birmingham B42 2TB, United Kingdom.

Quality Registration BS EN ISO 9001:2000, BS EN 9100:2003 and AS 9100 Reg. No. FM 90942

The information given here is believed to be correct, but completeness and accuracy are not guaranteed. The user shall be fully responsible for determining the suitability of products for the intended use.