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Stratasys takes certified flame-retardant FDM onto the railways

25 Jun 2026

Stratasys has launched a glass-fiber-reinforced FDM material certified to the EN 45545-2 rail fire standard, for printed end-use and spare parts.

Reading time: 2 minutes

Text: James Woodcock

Stratasys has added a flame-retardant grade to its industrial FDM range, aimed squarely at the rail sector. FDM PA6/66-GF30-FR, is a glass-fiber-reinforced thermoplastic for printing certified end-use and spare parts on the Fortus 450mc and F900.

The headline is certification. The material meets EN 45545-2 HL2 (R22/R23), the European rail fire-safety standard, alongside the US FMVSS 302 requirement, which is what turns a capable engineering polymer into something an operator can put into service. Underneath sits a PA 6/66 base reinforced with 30 per cent glass fiber, which Stratasys rates stiffer and stronger than its earlier flame-retardant polycarbonate grades and competitive with ULTEM 9085. Compatibility with breakaway SUP4050B support keeps post-processing quick.

AM has a long and successful relationship within rail applications. Fleets run for decades, spares are needed in small numbers long after a line is discontinued, and everything sits under strict safety rules. A certified, print-on-demand material tackles all three at once. The customer roster makes the point, with Alstom and Siemens Mobility both on the record at launch, so the application is real rather than aspirational.