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Material Properties

Technical data of GRP profiles can vary according to the type of fibre reinforcement, shape and wallthickness.

GRP profiles type MR
mat/roving reinforced

GRP profiles type UD
roving reinforced

Z

X

Z

Tensile
strength

250 MPa

30 - 80 MPa

1.000 MPa

Flexural
trength

250 MPa

30 - 80 MPa

1.000 MPa

E-Modulus
(tensile)

23.000 MPa

8.000 MPa

40.000 MPa

E-Modulus
(flexural)

25.000 MPa

9.000 Mpa

45.000 MPa

Elongation

1,0 - 1,8 %

2 %

Compressive
strength

450 MPa

90 MPa

450 MPa

Compressive
modulus

1.000 MPa

4.000 MPa

30.000 MPa

Density

1,9 kg/dm³

2,0 kg/dm³

Impact strength
IZOD

300 kJ/m²

300 J/m²

Barcol hardnes

> 40

> 50

Values for both types

Interlaminar
shearstrength

70 MPa

Specific insulation
resistance

10^10 - 10^15 Ohm* cm

Surface resistance

10^10 - 10^15 Ohm

Dielectric strength

5-10 kV/mm

Tracking index CTI

KA 3c / KB 500 / KC 600

Dielectric constant

< 5

Coefficient
of thermal expansion

12 x 10 -61/K

Thermal conductivity

0,2 - 0,6 W/m*K

Specific heat capacity

1,0 - 1,2 kJ/kg*K

Max. continous
temperature

-100 to +155 (180) °C

Water absorption

0,15 %

Temperature deflection
under load (Martens)

200 °C

Incandescence resistance

Level 2b

Fire resistance

B2, UL94 V1, UL94 V0, DIN 5510 S4 SR2 ST2, ASTM E84 < 25, ASTM D635

Short and longterm application limits

shortterm behaviour

longterm behaviour

Type MR

Z

X

Z

X

Bending strength

135 MPa

20 MPa

70 MPa

15 MPa

Tensile strength

135 MPa

20 MPa

70 MPa

15 MPa

Compression strength

135 MPa

25 MPa

70 MPa

20 MPa

Shear strength Z=X

17 MPa

8 MPa

 

E-Modulus

 

Specific tensile strength

Density