Fiberglass.
Technical properties.
Technical properties of fiberglass, a strong, lightweight, and corrosion-resistant material for demanding environments.
Technical properties – fiberglass (GRP).
Fiberglass combines low weight with high mechanical strength, excellent chemical resistance, and long service life, making it an optimal material for demanding structural environments. GRP products can also be adapted with different resin systems (such as polyester, vinyl ester, or epoxy) to meet specific requirements for fire resistance, chemical durability, and mechanical performance.
Technical data for GRP profiles can vary depending on the type of fiber reinforcement, shape and wall thickness.
| GRP profiles type MR mat/roving reinforced |
GRP profiles type UD roving reinforced |
|||
|---|---|---|---|---|
| Z | X | Z | ||
| tensile strength |
250 – 450 MPa | 20 – 60 MPa | 900 MPa | |
| flexural strength |
250 – 450 MPa | 20 – 60 MPa | 900 MPa | |
| Young’s modulus (tensile) |
25.000 MPa | 9.000 MPa | 40.000 MPa | |
| Young’s modulus (flexural) |
25.000 MPa | 9.000 MPa | 40.000 MPa | |
| elongation | 1,0 – 1,8 % | 2 % | ||
| compressive strength |
150 – 300 MPa | 30 – 60 MPa | 450 MPa | |
| compressive modulus |
10.000 MPa | 4.000 MPa | 30.000 MPa | |
| density | 2,0 kg/dm³ | 2,1 kg/dm³ | ||
| impact strength IZOD |
90 – 120 kJ/m² | 120 kJ/m² | ||
| Barcol hardness | > 40 | > 50 | ||
| Values for both types | |
|---|---|
| interlaminar shear strength |
25 – 35 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. continuous temperature |
-100°C to +155°C (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 | ||||
|---|---|---|---|---|
| short-term behavior | long-term behavior | |||
| 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 | ||
