HELCO - Pultrusion Profiles
The desired properties that pultrusion profiles combine and make them replace a lot of conventional materials such as metal, wood, aluminium etc. are the following (indicational values are given, along the profil) :
1. High Mechanical Strength
- Tensile strength 700 - 800 MPa
- Modulus of elasticity in tension 35 - 40 GPa
- Flexural strength 700 - 800 MPa
- Modulus of elasticity in flexion 35 - 45 GPa
- Elongation before break 2 %
- Compression strength 350 - 450 MPa
- Modulus of elasticity in compression 25 - 30 GPa
- Impact strength (Izod) 2000 J/m
- Hardness Barcol 45 - 50
2. Low specific weight
Pultrusion products’ relatively low specific weight combined with their good mechanical strength result in specific strength values greater than those of steel.
3. Resistance to chemical and thermal infection and to corrosion
- Temperature range of usage -100 oC to +150 oC
- Humidity absorption 0.15 %
4. Electric and heat insulation
- Thermal conductivity 0.2 - 0.4 W/mK
- Coefficient of thermal expansion 12(E-6) (1/K)
- Electrical resistivity 1(E-10) - 1(E-15) Ohm/cm
5. No need of service and protection
6. Adaption of material’s characteristics to the specialized demands of every application
7. Good machinability and easy application