EOS Maraging Steel

Direct Metal Laser Melting (DMLM)

EOS Maraging Steel MS1 for EOSINT M 270 Systems

EOS Titanium Ti64 is a titanium alloy powder which has been optimized especially for processing on EOSINT M systems.

A number of different materials are available for use with EOSINT M systems, offering a broad range of e-Manufacturing applications. EOS MaragingSteel MS1 is a steel powder which has been optimized especially for processing on EOSINT M 270 systems. Other materials are also available for EOSINT M systems, and further materials are continuously being developed – please refer to the relevant material data sheets for details.

This document provides a brief description of the principle applications, and a table of technical data. For details of the system requirements please refer to the relevant information quote.

Description, application

EOS MaragingSteel MS1 is a pre-alloyed ultra high strength steel in fine powder form. Its composition corresponds to 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.

This material is ideal for many tooling applications (DirectTool) such as tools for injection moulding, die casting of light metal alloys, punching, extrusion etc., and also for highperformance industrial and engineering parts, for example in aerospace and motor racing applications.

Standard processing parameters use full melting of the entire geometry, typically with 40 µm layer thickness, but it is also possible to use Skin & Core building style to increase the build speed. Using standard parameters, the mechanical properties are fairly uniform in all directions. Parts built from EOS MaragingSteel MS1 are easily machinable after the building process and can be easily post-hardened to more then 50 HRC by age-hardening at 490 °C for 6 hours. In both as-built and age-hardened states the parts can be machined, spark-eroded, welded, micro shot-peened, polished and coated if required. Unexposed powder can be reused.

Typical applications:

  • heavy duty injection moulds and inserts for moulding all standard thermoplastics using standard injection parameters, with achievable tool life of up to millions of parts – die casting moulds for up to several thousand parts in light alloys
  • direct manufacture of parts for engineering applications including functional prototypes, small series products, individualised products or spare parts.
  • parts requiring particularly high strength and hardness.

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