TUFNOL Polyester Glass Mat Laminated Sheets 
Polyester glass fibre laminate

TUFNOL Polyester glass mat laminates are produced by combining polyester resin with continuous roving glass mat.  They are a useful group of materials that fall in price and performance between paper and cotton fabric laminates and high performance woven glass types.

Two grades are available, offering compliance with NEMA Types GPO-2, NEMA GPO-3 and DIN 7735 Type Hm 2471.

Grade PGM/2

An electrical grade with assessed flammability characteristics (UL 94 V-0). Good for cold punching. Colour ivory. NEMA Type GPO-2. Suitable for thermal class F applications.  Available in sheets from 0.8mm to 25mm thick.

Grade PGM/3

An electrical grade with assessed flammability characteristics (UL 94 V0) plus excellent arc and track resistance.  Colour red.  NEMA Type GPO-3 and DIN 7735 Type 2471. Suitable for thermal class F applications.  Available in sheets from 0.8mm to 25mm thick.

What are polyester glass mat laminates used for?

These materials have excellent mechanical and electrical properties and are widely used in applications where good electrical insulation is required up to thermal class F temperatures (155oC).

TYPES AVAILABLE	Sheets
Grade PGM/2     – colour ivory	Yes
Grade PGM/3     – colour red	Yes

Minimum order quantities may apply.

Click here for Polyester Glass Mat sheets STANDARD SIZES

SPECIFICATIONS for Polyester glass mat sheets

BRITISH STANDARDS	Current Standards
Grade PGM/2	NEMA GPO-2
Grade PGM/3	NEMA GPO-3 & DIN 7735 Type Hm 2471

PHYSICAL PROPERTIES

TUFNOL RL Epoxy Glass Fabric Tubes

PROPERTY	Grade PGM/2 TYPICAL RESULT	Grade PGM/3 TYPICAL RESULT	UNITS
Flexural strength	130	130	MPa
Flexural modulus	7.8	8.2	GPa
Tensile strength	70	70	MPa
Tensile modulus	4.6	4.0	GPa
Impact strength, Charpy	35	40	kJ/m2
Water absorption	0.22	0.30	mg/cm2
- 3mm thick	0.30	0.27	%
Dielectric breakdown parallel to laminations	40	40	kV
Perpendicular dielectric strength	9	15	kV/mm
Comparative tracking index            (IEC112)	600	600	-
Flammability category IEC 707 (UL-94)	V0	V0	-
Relative density	1.7	1.8	-
Maximum working temperature**
- continuous	140	140	ºC
- intermittent	155	155	ºC
Thermal classification	Class F	Class F	-
Thermal expansion	2.4	2.4	x10-5/K
Thermal conductivity	0.3	0.3	W/(mK

Tests are to ASTM methods, where applicable.

*Note:  Data on this grade is provisional and is based on a small number of tests.

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

Machining

Components are produced from TUFNOL Polyester glass mat laminates by machining on standard machine tools using the techniques for machining other TUFNOL Glass reinforced laminates, including the use of carbide or diamond tipped tools, where appropriate.  They can be guillotined and punched up to 4mm thick.

TUFNOL Ltd. have comprehensive facilities for the machining of PGM materials and can economically produce finished components to customers drawings.

A full machining service is available from Tufnol 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.