Provisional Datasheet level 1 Gurit® G-PET™ FR FIRE RETARDANT STRUCTURAL CORE ¬ Excellent FST performance, evaluated against ¬ Withstands high process temperatures ¬ Excellent chemical resistance ¬ Good adhesion & mechanical properties ¬ Recyclable ¬ Compatible with all composite processes ¬ Available with Gurit® G-PET™LITE technology Gurit G-PET™FR has been developed in order to meet the growing need for structural core materials with good Fire, Smoke and Toxicity (FST) properties used in Marine, Civil and Transportation markets. It offers a much lower cost FST material compared to high cost / high performance materials such as PMI, PEI or PES foams, addressing lower requirements and needs. ® Starting with Gurit G-PET™, Gurit’s extruded structural PET core, flame retardants are then added to improve FST ® properties. The manufacturing process remains the same as Gurit G-PET™, with slight variation in process settings. ® The material is available in all standard knife cut finishes as well as the new surface heat treatment technology Gurit G® PET™ LITE. Gurit G-PET™ FR is produced in Gurit Tianjin, China. ® Gurit G-PET™ can be processed at high temperatures, withstanding exotherms up to 150⁰C / 300⁰F and offers outstanding fatigue properties, chemical resistance, good adhesion, is a highly consistent extruded foam, it is ideal for wind energy, marine, industrial, and transportation applications. Applicable processing techniques include vacuum infusion, bonding, prepreg, and thermoforming.

Instructions for Use General working practices apply to these products, details of which can be obtained from the Gurit Guide to Composites or by contacting a Gurit representative (contact details provided at the end of this datasheet). TYPICAL MECHANICAL PROPERTIES Property Nominal Density Typical Density range Compression Strength Compression Modulus Shear Strength Shear Modulus

FIRE RETARDANCE TESTING SUMMARY Fire Performance / Standard Typical Requirements FED (toxicity) ASTM E1354 (heat of combustion) ASTM E662 (smoke density) Vertical Bunsen burner Test 12s & 60s flame Exposure time Smoke Density Certification depends on sandwich design US Federal railroad administration typical transportation industry criteria (aviation)

NOTICE All advice, instruction or recommendation is given in good faith but Gurit AG (the company) only warrants that advice in writing is given with reasonable skill and care. No further duty or responsibility is accepted by the Company. All advice is given subject to the terms and conditions of sale (the Conditions) which are available on request from the Company or may be viewed at the Company’s Website: www.gurit.com/terms-and-conditions.aspx The Company strongly recommends that Customers make test panels and conduct appropriate testing of any goods or materials supplied by the Company to...