SGL Group industrial grade carbon fiber SIGRAFI C30T050 EPY is the first and only heavy tow carbon fiber formally approved by GL Wind for use in the wind industry.
The fatigue properties exceed the minimum values given by the “Guideline for the certification of wind turbines” of GL Wind. The Guideline clearly excludes the so called Heavy Tow Carbon fiber (>48k) for the design of wind turbine blades, unless additional verification tests are performed. The product SIGRAFIL C30T050 EPY is a 50k, PAN based carbon fiber designed for industrial applications and is already used in the wind industry. SGL Group offers the fiber as well as semi-finished products like prepreg and dry non crimped fabrics. All products are specifically designed for use in wind turbine rotor blades.