
MATTRIS 2026 by A3TS will take place from July 1 to 3, 2026 at Le Kursaal in Dunkirk, France, combining a technical conference with a professional trade show for companies, research organizations, and specialists in materials processing, heat treatment, and surface engineering.
The 2026 theme focuses on the contribution of heat treatments and surface engineering to a high-performance and sustainable industry, covering energy reduction, low-impact coatings, functional surface properties, repair and recoating, new materials, testing solutions, digital simulation, and artificial intelligence.




A3TS is a French professional association for heat treatment and surface treatment based in Paris. It organizes MATTRIS 2026 and connects companies, research organizations, and specialists through conferences, exhibitions, and industry exchange.





A3TS is a French professional association for heat treatment and surface treatment based in Paris. It organizes MATTRIS 2026 and connects companies, research organizations, and specialists through conferences, exhibitions, and industry exchange.