General Datasheet GURIT® CORECELL™ S STRUCTURAL FOAM CORE ¬ High hydrostatic crush strength and water resistance ¬ Outstanding mechanical properties ¬ Ultra-fine cell size ¬ Lower density than resin-based syntactics INTRODUCTION Gurit® Corecell™ S shares the benefits of SAN chemistry common to all Gurit ® Corecell™ products. Built in toughness – High ductility and damage tolerance Fine cell size – Resin absorption is very low, saving both weight and cost Superior uniformity – More consistent density than resin-based syntactics Eliminating outgassing – Gurit® Corecell™ eliminates the problems of foam outgassing Compatibility – Suitable for use with all polyester, vinylester and epoxy resins No inhibition - Gurit® Corecell™ does not inhibit any epoxy resin curing mechanisms Handling – Robust for easy machining and use Gurit® Corecell™ S has been designed specifically for use in sub-sea buoyancy applications. Its resistance to crushing means that it can withstand depths of over 900m, and its closed-cell structure gives it a high water resistance that ensures buoyancy is maintained over time. With its very high compressive strength, Gurit ® Corecell™ S can also replace other materials, such as plywood, when creating high strength inserts for throughbolting in composite laminates. Having the smallest cell size of all the Gurit ® Corecell™ products, Gurit® Corecell™ S absorbs very little resin in lamination processes, thus minimizing weight gain. The small cell size and the product’s inherent toughness also contribute to the excellent machinability of Gurit® Corecell™ S. Complex shapes can be created in Gurit ® Corecell™ S using a variety of milling, routing, sawing and drilling techniques. Gurit® Corecell™ S is available at lower densities that can be achieved with a syntactic, with standard products ranging from 200 to

General Datasheet 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). MECHANICAL PERFORMANCE Type Test Method Short Edge Marking Nominal Sheet Size Density Range Nominal Density Compressive Strength MPa Hydrostatic Crush Pressure (HCP)* ASTM D1621b or DIN 53421 (1973) Compressive Modulus ASTM D1621 - 2016 Shear Strength Shear Modulus Shear Elongation at break Heat Distortion Temperature (HDT)** Thermal Conductivity...

General Datasheet NOTICE All advice, instruction or recommendation is given in good faith but the selling Gurit entity (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 Gurit’s Website: www.gurit.com/terms-and-conditions.aspx The Company strongly recommends that Customers make test panels in the final process conditions and conduct appropriate...