| Parts built in EOS MaragingSteel MS1 have a chemical composition following US classification 18% Ni Maraging 300, European 1.2709 and German X3NiCoMoTi 18-9-5. This kind of steel is characterized by having very good mechanical properties, and being easily heat-treatable using a simple thermal age-hardening process to obtain excellent hardness and strength. Parts built from EOS MaragingSteel MS1 are easily machinable after the building process and can be easily post-hardened to more than 50 HRC by age-hardening at 490 °C (914 °F) for 6 hours. In both as-built and age-hardened states the parts can be machined, spark-eroded, weld-ed, micro shot-peened, polished and coated if required. Due to the layerwise building method, the parts have a certain anisotropy, which can be reduced or removed by appropriate heat treatment – e.g. solution treatment at 940 °C (1724 °F) for 2 hours - see Technical Data for examples. Heat treatment procedure: solution treatment at 940 °C (1724 °F) for 2 hours, air cooling + ageing at 490 °C for 6 hours, air cooling. Information provided by EOS GmbH (Electro Optical Systems). |
