September 27, 2022 — Uppsala, Sweden — The companies will develop and produce a new high performance type IV pressure vessel liner. Expected improvements include reduced hydrogen leakage and increased resistance to extreme thermal- and pressure conditions. The partnership combines Steelhead Composites’ leading pressure vessel technology, services, and market position with Graphmatech’s graphene-polymer composites for the hydrogen economy. Graphmatech’s patent-pending technology mixes graphene flakes in the polymer matrix evenly, preserving much of graphene’s amazing material properties. In comparison to competing materials, the resulting graphene-polymer composites are, among other things, less permeable to gas, more electrically conductive, more thermally conductive, and easier to process in a wide range of manufacturing technologies. “Partnering with Steelhead Composites is a big step forward in our mission to enable the green transition with graphene. We’re eager to develop and launch this graphene enhanced hydrogen pressure vessel liner together,” says Dr Mamoun Taher – CEO & Founder of Graphmatech. “As we strive to manufacture and deliver the best hydrogen storage solutions across the globe, we are thrilled to embrace innovative technologies like Graphmatech’s graphene-polymer composites,” says Andrew Coors, CEO of Steelhead Composites.

About Graphmatech

Graphmatech AB delivers patented next-generation materials to support the green transition. The company is best known for its polymers for the hydrogen economy, improved metals for electrification, conductive polymers for 3D printing and graphene additives for batteries. Founded as a spinout from Uppsala University in 2017, Graphmatech is a privately held Swedish company with a diverse team spanning eight nationalities. Find out more at

About Steelhead Composites

Established in 2012, Steelhead is dedicated to manufacturing of lightweight, high-strength cylinders used for weight-sensitive energy and fuel storage applications. Specialties include lightweight COPVs for storage and transport of hydrogen, CNG, and other pressurized gases, bladder accumulators, metallic and polymeric liners, and various accessories. Steelhead offers a full array of technical services in vessel design, metal spinforming, filament winding, prototyping, and testing of high-pressure vessels. For more information, visit

Graphmatech Media Contact:

Torkel Nord Bjärneman
Business Development Manager, Polymers

Steelhead Composites Media Contact:

Marisa Sundy
Director, Business Development