SGL Carbon: New carbon fiber withstands press...
SGL Carbon

New carbon fiber withstands pressure of up to 700 bar

New carbon fiber Sigrafil C T50-4.9/235 (Source: SGL Carbon)
New carbon fiber Sigrafil C T50-4.9/235 (Source: SGL Carbon)

A new carbon fiber with high-strength, suitable for pressure vessels, is offered by SGL Carbon. Sigrafil C T50-4.9/235 will be presented at the JEC World 2023 in Paris/France, from April 25-27, 2023. In this context, the new carbon fiber even better meets the high strength requirements for common pressure vessel designs and exhibits a high elongation capacity. It will also enable further applications in market segments that require high strength and elongation.
SGL Carbon SE, Wiesbaden/Germany, has many years of experience in carbon fiber production and produces its own precursor as well as its own carbon fibers in its European and North American value chain.
The new Sigrafil carbon fiber was developed based on the 50k fiber portfolio already in large-scale production, which is successfully used in the wind and automotive industries, among others. The fiber achieves high levels of strength (4.9 GPa) and elongation (2.0%), now available in the 50k arena. Until now, these values could only be achieved with lower filament count fibers (e.g. 12k or 24k). This further complements SGL's broad product portfolio of 50k fibers. The typical advantages of Sigrafil 50k fiber types, such as increased process efficiency, higher material throughput, faster process times and less set-up effort, can now also be benefitted from these innovative applications.
With its innovative products, SGL Carbon supports the rapidly growing demand for climate-friendly mobility. Thanks to its special mechanical properties, the new carbon fiber Sigrafil C T50-4.9/235 is suited for winding pressure vessels which are needed for storing hydrogen in fuel cell vehicles. In the manufacture of pressure vessels, plastic containers are wrapped with carbon fibers impregnated in resin and then cured. Due to their low weight combined with high strength, Sigrafil carbon fibers enable weight advantages in tank design and can withstand very high pressures of up to 700 bar.
In addition to its use in pressure vessels, the new carbon fiber also enables applications in market segments such as construction, infrastructure and sports that require high strength and fiber elongation.

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