Broad Base. Best Solutions. SIGRAFIL Continuous Carbon Fiber Tow

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1 Broad Base. Best Solutions. COMPOSITEs Fibers and MATERIALS SIGRAFIL Continuous Carbon Fiber Tow

2 2 Carbon fibers and composites made by SGL Group. Q Comprehensive product range Q Integrated value chain Q Only European carbon fiber manufacturer Q Consistently high quality Q Many different processing technologies Q Innovative tailored solutions Q High security of supply Q Close-to-customer sales and distribution network Q Global presence

3 BUSINESS UNIT COMPOSITEs Fibers and MATERIALS 3 Unique integrated value chain SGL Group covers the complete value chain of carbon fiber products: from precursor via carbon fibers, fabrics, and prepregs to the finished CFRP components. Our carbon fibers produced by SGL Group in Europe and North America form the basis for all processing steps in fiberreinforced composite applications. Carbon fiber-reinforced plastics are high-performance materials with unique properties. They are used where other materials have reached their limits and are indispensable in many industries today, e.g. for lightweight components with highest strength and stiffness. SGL Group is the only European manufacturer to cover the entire carbon fiber value chain: from raw material we produce ourselves all intermediate steps to the finished end products. In this way, we can guarantee the highest product quality and security of supply. With many different processing technologies and comprehensive production, material, and application know-how, we can offer our customers tailormade solutions for their requirements for example in automotive production, the wind energy sector, and numerous other industrial applications. SIGRAFIL continuous carbon fiber tow SIGRAFIL continuous carbon fiber tow forms the basis for high-quality carbon fiber-reinforced composites (CFRP). It is suitable for a wide variety of processing technologies and is the main component of CFRP products. It also opens up new possibilities for serial production of CFRP components used in many different industries. b Carbon fibers in the manufacturing process Video: From fiber to finished component sglgroup

4 4 Carbon fibers an ideal material for composite components Typical CFRP properties such as high stiffness and strength coupled with light weight are due to the special advantages of continuous carbon fiber tow: Q Excellent mechanical properties Q Low density Q Low thermal expansion Q Good electrical conductivity Q Non-corrosive Q Good spreading behavior

5 CARBON FIBER 5 SIGRAFIL continuous carbon fiber tow based on PAN SIGRAFIL is a continuous carbon fiber tow that we produce on the basis of a polyacrylonitrile (PAN) fiber. As a key component of fiber-reinforced composites, SIGRAFIL is used in widely diverse applications and products. The main advantages of our continuous carbon fiber tow are excellent mechanical properties combined with light weight. With its exceptional strength, high elastic modulus, and low density, SIGRAFIL is a high-performance material capable of producing very stiff yet lightweight composites. SIGRAFIL is ideal for numerous processes, such as non crimp fabric and prepreg production, weaving, pultrusion, braiding, filament winding and other high-quality composites. Automotive industry: Our continuous carbon fiber tow is used in composites for applications such as lightweight car body and structural components. For electric cars, entire passenger cells are produced from CFRP. Wind energy: In wind farms, carbon fiber-reinforced plastics are used for the rotor blades of wind turbines. Aerospace: Carbon fiber-reinforced plastics are used for aircraft components such as fuselage and wing structures, floor beams, and floor panels, and in space engineering for engine cowlings. b 24k carbon fiber spool Sports industry: In the sports sector, carbon fiber-reinforced composites are used as a high-performance material for racing bike frames, racing car monocoques or golf clubs, fishing rods, and archery bows. Mechanical engineering: Carbon fibers impart high strength and stiffness and good damping properties to components subject to extreme dynamic stresses. Typical applications include gripper bars or lifting beams and transfer bars for automation technology. Manufacturing process PAN precursor Oxidation C ( F) Carbonization C ( F) Surface treatment Sizing Winding

6 6 Continuous carbon fiber tow for high-volume industrial applications SGL Group focuses on large tows with (24k) or (50k) filaments. They are used mainly in high-volume industrial applications, generally with thermosetting resin systems as the matrix material. Each of our large tow fiber grades offers a specific combination of excellent mechanical properties. Whether your primary requirement is stiffness or strength, we can always supply you with the best material for your 1 application from our range of different fiber grades. This is because the mechanical properties of our carbon fibers can be optimally transferred to the end product or component. Typical properties of epoxy prepreg with SIGRAFIL continuous carbon fiber tow (60 Vol. % fiber) Flexural modulus (GPa) Tensile strength (MPa) C T24-5.0/270-E100 C T50-4.0/240-E Tensile modulus (GPa) Our range is completed by thermoplastic-compatible continuous carbon fibers and stretch-broken carbon fiber yarns for textile processes. These materials also have specific properties to offer Nomenclature key Flexural strength (MPa) 250 ILSS (MPa) SIGRAFIL C T24-5.0/270-E Brand name SIGRAFIL 2 Material C = carbon 3 Type T = continuous tow SB = stretch-broken yarn Material data of our SIGRAFIL continuous carbon fiber tow 4 Number of filaments 24 = = Fineness of yarn 70 = 70 tex 5 Mechanical properties tensile strength and tensile modulus (GPa) 6 Sizing E100 = epoxy T140 = thermoplastic R100 = elastomer Properties Units C T24-4.8/240-E100 C T24-5.0/270-E100 C T50-4.0/240-E100 C T50-4.4/255-E100 Number of filaments 24k 24k 50k 50k Fineness of yarn tex Density g/cm³ Filament diameter µm Tensile strength GPa/ksi 4.8/ / / /638 Tensile modulus GPa/Msi 240/35 270/39 240/35 255/37 Elongation at break % Single filament resistivity µωm/µωin 15 /590 14/550 15/590 17/670 Sizing type epoxy epoxy epoxy epoxy Sizing level %

7 CARBON FIBER 7 Ideal for textile production and direct processes Easy material processability plays a key role in product manufacture especially when it comes to producing innovative high-tech components cost-efficiently. Continuous carbon fiber tow made by SGL Group scores highly here with optimum winding properties, low fuzz content, and good spreading behavior. It also offers good resin absorption and impregnation characteristics. As a result, our material has excellent processing properties and so increases process efficiency. c Multiaxial fabric in rotor blade construction Due to SIGRAFIL s good spreading behavior, areal weights can be optimized and different textile constructions used, for example in multiaxial fabrics. This makes it possible to produce innovative lightweight components in very large dimensions, such as rotor blades. c Composite component with exposed carbon surface SIGRAFIL s good resin absorption speeds up resin transfer molding (RTM) and leads to optimum fiber embedment in the matrix. This guarantees exceptional properties, even in large serially produced components. c Pressurized container filament-wound with SIGRAFIL continuous carbon fiber tow We match the mechanical properties of the material to customer-specific requirements. This opens up whole new possibilities in the design and production of high-performance components, such as filament-wound pressurized containers.

8 8 Continuous carbon fiber tow for fiber-reinforced thermoplastics One of our innovations is a continuous carbon fiber tow for fiber-reinforced thermoplastics. Thanks to a special size developed by us, the carbon fibers can be optimally bonded to the thermoplastic matrix. In this way, the high stiffness and strength of the fiber can be fully transferred to products and their components. Thermoplastic carbon fiber composites open up new possibilities for serial production. Our innovative fibers are suitable for very diverse thermoplastic production chains and show good spreading behavior for textile processes. c Continuous carbon fiber tow with thermoplastic-compatible size Mechanical properties achieved with thermoplastic-compatible sizings Bending strength 90 [MPa] (values for PA-6 matrix) 55 Standard sizing 113 Special thermoplastic-compatible sizing Our fibers form the basis for these composites, enabling the outstanding properties of carbon fibers to be combined with the typical processing properties of thermoplastics. The composites can be readily shaped, repaired, and recycled. In addition, they permit short production cycles and facilitate product manufacture by making components weldable. So our material makes an important contribution to sustainability and efficiency. Material data of our SIGRAFIL continuous carbon fiber tow Properties Units C T50-4.0/240-T140 Number of filaments 50k Density g/cm³ 1.80 Fiber diameter µm 7 Tensile strength GPa/ksi 4.0/580 Tensile modulus GPa/Msi 240/35 Elongation at break % 1.7 Compatible matrix various thermoplastics, preferably polyamides

9 CARBON FIBER 9 Stretch-broken carbon fiber yarn for textile processes Our stetch-broken SIGRAFIL carbon fiber is a very fine yarn offering very high performance. It combines the outstanding properties of carbon fibers with excellent textile processability. The key material advantages are: High yarn strength Very good knot and loop strength Heat resistance Chemical resistance Low elongation Electrical conductivity Defined electrical resistivity Non-melting Our carbon fiber yarn is particularly suitable for braiding, sewing, stitching, knitting, and weaving. It opens up new possibilities in a wide range of applications spanning numerous industries such as auto manufacture and the aerospace sector. The yarn is typically used where flame retardancy, high-temperature resistance or electrical insulation are required. As a sewing yarn and reinforcing material, our carbon fiber yarn is found in a variety of end products, such as heating elements. c Stretch-broken carbon fiber yarn Material data of our SIGRAFIL stretch-broken carbon fiber yarns Properties Units C SB70-3.3/240-R100 Fineness of yarn tex 70 (2 35) Twist direction Z Yarn twist T/m 230 Yarn finish styrene-butadiene rubber-based* Finish level % 1.0* Resistivity Ω/m 490 Tensile strength N > 48 Knot strength N > 2 Loop strength N > 10 Elongation at break % > 0.8 Max. temperature range C *Other yarn finishes on request.

10 10 A comprehensive range of application-optimized, high-performance solutions. To develop new ideas, you need partners who can contribute added knowledge and think outside the box. As the only European carbon fiber manufacturer, we offer more than just our comprehensive product portfolio. With our many different processing technologies, we supply solutions perfectly matched to your requirements, application, and technical conditions: precisely tailored high-performance materials for the development and production of competitive lightweight design innovations.

11 SGL Group the Carbon Company 11 SGL Group The Carbon Company. A leading global manufacturer of carbon-based products. Q Unique product portfolio Q Innovative technologies and solutions Q Production sites close to sales markets Q Technology & Innovation Center in Germany with international networks b Winding carbon fibers in the carbon fiber pilot plant We have wide-ranging expertise in raw materials, advanced manufacturing processes, and longstanding application and engineering know-how. We have a comprehensive portfolio of carbon, graphite, and carbon fiber products and our integrated value chain covers everything from carbon fiber to composites. With a global sales and distribution network and modern production sites in Europe, North America, and Asia, we are close to our customers throughout the world. We use this broad base to offer our customers the best solutions possible. That s how we live up to our claim: Broad Base. Best Solutions. This claim is also upheld by our corporate SGL Excellence philosophy of continuous improvement. + More information can be found by visiting: C sglgroup sglgroup

12 Contact europe Phone Fax americas Phone Fax asia/pacific Phone Fax registered trademarks of SGL CARBON SE /0 4NÄ Printed in Germany This information is based on our present state of knowledge and is intended to provide general notes on our products and their uses. It should therefore not be construed as guaranteeing specific properties of the products described or their suitability for a perticular application. Any existing industrial property rights must be observed. The quality of our products is guaranteed under our General Conditions of Sale. Composites Fibers and Materials SGL TECHNOLOGIES GmbH Werner-von-Siemens-Strasse Meitingen/Germany