EOS Announces 3 New Materials

EOS is introducing two new plastic materials and one metal material for industrial 3D printing. PrimePart ST (PEBA 2301), a soft, flexible, and elastic material, belongs to the group of thermoplastic elastomers and is available immediately for EOSINT P 395 systems. In the coming months, availability will be extended to the EOS FORMIGA P 110 and EOSINT P 760 systems. PrimePart® FR (PA 2241 FR) is a flame-retardant Polyamide 12 and is available now for both the current EOSINT P 395 and P 760 systems, as well as for the EOSINT P 390 and P 730. EOS NickelAlloy HX is their new heat and corrosion resistant nickel-chrome-iron-molybdenum alloy.

PrimePart® ST: Characteristics and Potential Applications

Possessing an elongation at break of two hundred percent, together with a good elastic restorative capacity and rebound elasticity PrimePart® ST was developed to support the production of flexible, rubber-like parts. The optimized design ensures that parts will return to their original shape, even after significant deformations. Post-production infiltration is not necessary for achieving the excellent mechanical properties and surface qualities. In the temperature range of -40 to 90°C the material demonstrates a very good fatigue performance. If desired, it supports many post-production options for treating the manufactured part, including roto-finishing, flame-treatment, flocking, paint finishing, and smoothing. This facilitates the realization of specialized surface-finishes that meet the specific and varied requirements of customers.

One key sphere of application is in the manufacture of sporting goods: In the production of winter sport accessories, such as impact protectors, the resilience of the material opens up a broad range of possibilities. Another potential application is in the consumer-goods sector, particularly in housings where there exists the risk of breakage through falling, being-dropped, and other instances of impact. Within industry, the automobile sector is one of many potential users: Fitting accessories such as grips, corner/edge, and paintwork protectors can be realized, as are, for example, soft door-lock components. Medical applications would include instrument-grips as well as significant applications in orthopedic technology. In addition, the material is suitable for the manufacture of, for example, hoses, grips and handles, or flexible cable holders and sheaths, across the spectrum if industrial production.

PrimePart® FR for the Aerospace Sector

The new flame-retardant material is especially suitable for application in the aerospace sector. PrimePart® FR (PA 2241 FR) is a flame-retardant Polyamide 12 for processing on the EOSINT P 3xx and P 7xx systems. This replenishable material – the recommendation is to use at least 60 percent new powder - meets the relevant flame-proof requirements at wall thicknesses of just 1.0 mm. The replenishability significantly cuts the costs of part manufacturing. In addition, the material demonstrates improved mechanical properties: A tensile strength of 49 MPa with an elongation at break of fifteen percent. This means that PrimePart® FR exceeds the extremely successful PA 2210 FR, which, until now was the only flame-retardant PA 12 material in the EOS portfolio. Typical applications in the field of airplane interiors would include ventilation ducts and outlet vents.

“With these plastic materials we are reacting to two needs that our customers have brought more and more to our attention - the provision of materials that allow for new applications, while keeping a firm eye on cost-efficiencies. The soft, rubber-like PrimePart® ST has received euphoric feedback from our test-customers, which bodes well for the material's introduction to the market. It's a similar story with PrimePart® FR. The rising cost pressures in the aerospace sector and the increasing demand for light-weight parts mean that PrimePart® FR is ideally suited for meeting today's requirements”, summarizes Fabian Müller, Product Marketing Manager Polymers at EOS.

EOS NickelAlloy HX

EOS is also expanding its portfolio of metal materials with the immediate commercial introduction of EOS NickelAlloy HX. The heat and corrosion resistant nickel-chrome-iron-molybdenum alloy distinguishes itself through a high degree of strength and its resistance to oxidization, even at high temperatures. For this reason it will see frequent application in temperatures up to the region of 1,200ºC. The material is optimized for processing in the EOSINT M 280 metal system, and is typically processed with a layer-thickness of 20 µm.

Christiane Krempl, Product Marketing Manager Metals decribes the potential application for the alloy: “The material is particularly well suited for deployment in applications that are exposed to high thermal forces giving rise to a significant risk of oxidization. Typical areas of deployment that we are seeing include aerospace, for example, with combustion chambers and their components parts. The material is also ideal for use in heating elements, in conveyor ovens, or industrial blast furnaces.”

Andreas Graichen, Product Developer (Gas Turbines) at Siemens Energy adds: “We use EOS' additive manufacturing process for constructing prototypes, for 'rapid manufacturing', and 'rapid repair'. Thanks to this technology we are able to cut repair times and thereby reduce costs for customers commissioning us in the repair of industrial gas turbines. In the construction process we use the Nickel Alloy HX. Its material properties make it ideally suited for repair works, as it is able to withstand the high temperatures to which the gas turbines are constantly exposed. For the repair, the complete burner is brought into the tailor-made EOS-Metal System: We leave the structure intact, remove the outer 20mm, and then simply print a new combustion-head. This process ensures significant savings both in terms of repair times and costs.”

Parts build from EOS NickelAlloy HX can be subsequently heat-treated in order to partially modify the characteristics of the material. Whether hardened or in their original built form, parts can be finished as required, and surplus unexposed material can be re-used.

For more information, visit: www.eos.info/systems_solutions

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