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Additive Manufacturing

EOS Introduces Four New Materials for Laser Melting of Serial Products

| Editor: Alexander Stark

EOS has developed four new metal materials for its direct metal laser sintering machines: EOS Stainless Steel CX, EOS Aluminum AlF357, EOS Titanium Ti64 Grade 5 and EOS Titanium Ti64 Grade 23. They are intended to make a wide variety of series applications possible, ranging from automotive engineering to medical technology.

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The new stainless steel, aluminum and titanium powders are tailored to a wide variety of applications, ranging from automotive construction to medical technology.
The new stainless steel, aluminum and titanium powders are tailored to a wide variety of applications, ranging from automotive construction to medical technology.
(Source: Tobias Hase/EOS)

Metal powder EOS Stainless Steel CX is a new tool steel developed for production with the EOS M 290 system. It combines good corrosion resistance with high strength and hardness. Components made of this material are easy to machine and offer excellent polishability. EOS Aluminum AlF357 is the ideal material for applications that require both low weight and mechanical or thermal strength. Components made of this material are characterized by their light weight, corrosion resistance and high dynamic load capacity. Therefore, the material is used primarily in the aerospace and automotive industries. EOS Aluminum AlF357 was initially developed specifically for production with the EOS M 400, but will also be made available for the EOS M 290 system in the future. EOS Titanium Ti64 Grade 5 is suitable for applications requiring low weight and high strength. The material was specially developed to achieve high fatigue strength without requiring isostatic hot pressing (HIP). The material, suitable for production with the EOS M 290, offers excellent corrosion resistance. This makes it predestined for applications in the aerospace and automotive industries. EOS Titanium Ti64 Grade 23 was also specially designed to achieve high fatigue strength without requiring isostatic hot pressing (HIP) for production on the EOS M 290. Compared to Ti64, TI64 Grade 23 offers improved elongation and toughness, but with lower strength. Thanks to these properties, the material is particularly suitable for applications in the medical field.

Valid Parameters as a Basis for Additive Series Production

For all four materials, EOS provides extensive data on the material properties - such as the number of test specimens on which the mechanical properties are based - as well as high-resolution scanning electron microscope images that provide an insight into the quality of the material. EOS also classifies the technological maturity of all its polymer and metal materials and processes in the form of Technology Readiness Levels (TRL). The TRL concept was developed by NASA and is established in numerous industries. Level 5, for example, refers to a verification of the technical solution, while level 9, which is the highest level, documents full production capability with extensive statistical data. To ensure easy orientation, EOS also divides its materials and processes into two categories: Core products include TRL 3 to 6, premium products comprise TRL 7 to 9 and thus address the use in series production. The new materials belong to the following categories:

  • EOS Stainless Steel CX: Premium, TRL 8
  • EOS Aluminum AlF357: Premium, TRL 7
  • EOS Titanium Ti64 Grade 5: Premium, TRL 7
  • EOS Titanium Ti64 Grade 23: Premium, TRL 7

This article was first published by konstruktionspraxis.

Original by Dorothee Quitter / Translation by Alexander Stark

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