This medium-gray high-performance plastic from the group of polyetherketoneketones (PEKK) consists of 23% carbon fibers encapsulated (compounded) in the round powder grains of the material. By comparison with 3D-printed components, which have dry mixed carbon fibers, the properties of parts made from HT-23 are almost isotropic. They are also chemically resistant, with a high melting point, and their inherent flame-retardant properties are similar to ULTEM™ filament*. The material is approved for parts destined for the interior of trains under DIN EN 45545-2:2016, Requirement Sets R1 and R24.