EOS – the leading manufacturer of 3D printers printing from powdered polymers and metals has announced the expansion of the material portfolio for the M 290 printer with four new metal alloys. The machine operating in the proprietary DMLS technology already has a fairly extensive portfolio of materials, but the addition of four more to the offer will further expand its application and functional scope.

For many years, EOS has been developing a program called the Quality Triangle, consisting in collecting data from each of the three main technical elements of the additive manufacturing process – 3D printers, materials and the course of the 3D printing process itself, assigning each of them a technological readiness level (TRL). This marking ensures that estimated capacity and capacity are accurately described so that customers know exactly what they are getting.

Premium products with the designation TRL 7-9 have proven performance and reproducible part properties. Products marked TRL 3-5 are referred to as basic products, which means that they are in a relatively early stage of research, but they give access to technology that is still under development. All four new materials have received the TRL 3 Core classification.

New EOS metal alloys for 3D printing

The first of the new materials is StainlessSteel 254, i.e. stainless steel. The metal is suitable for extreme applications such as chemical handling equipment, pulp and paper equipment, and chlorinated seawater equipment. Austenitic stainless steel is characterized by high resistance to pitting corrosion – homogeneous and crevice. The material’s excellent corrosion resistance is due to its high content of chromium, molybdenum and nitrogen alloys, and EOS claims to also have excellent stress corrosion cracking as well as higher strength than conventional austenitic steel.

The second material also belonging to the group of stainless steels is StainlessSteel SuperDuplex, designed to work in harsh environments. Optimized for 3D printing, duplex austenitic-ferritic stainless steel has a high content of chromium, molybdenum and nitrogen for excellent corrosion resistance. StainlessSteel SuperDuplex also exhibits excellent resistance to pitting, uniform and crevice corrosion. EOS says the material also offers high strength and is well suited for applications in mining and offshore equipment, the oil and gas industry, and pulp and paper production equipment.

A third metal alloy, cobalt-free and ultra-high-strength ToolSteel CM55 is designed for use at elevated temperatures in tools and engineering solutions. The steel combines a moderate content of carbon and alloying elements to create a stable, strong structure for more demanding applications such as driveline components, hot and cold work tools, and mechanical engineering parts.

The last new material – NickelAlloy HAYNES 282, is also designed for 3D printing of parts for applications at elevated temperatures. Manufactured under license from Haynes International Inc., it is formulated with a nickel-based superalloy> Dedicated to the production of high-temperature structural applications such as power industry components, rotor and gas turbine parts, and aircraft and rocket engine components. It has what EOS calls a “unique combination” of thermal stability, excellent weldability, good oxidation and corrosion resistance, and high temperature resistance.

Source: www.eos.info
Photos: www.eos.info (press materials / all rights reserved)

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