MaterialsMetal Additive ManufacturingMetals

New metal AM materials from EOS

Including EOS StainlessSteel 254, StainlessSteel SuperDuplex, ToolSteel CM55, and NickelAlloy HAYNES 282

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EOS, a leading supplier of industrial 3D printing technology, has introduced four new metal materials for additive manufacturing on the EOS M 290 metal system, including EOS StainlessSteel 254, EOS StainlessSteel SuperDuplex, EOS ToolSteel CM55, EOS NickelAlloy HAYNES 282.

New metal AM materials from EOS. Including EOS StainlessSteel 254 and SuperDuplex, ToolSteel CM55, and NickelAlloy HAYNES 282.
Part printed with EOS StainlessSteel 254

“Material development is always driven by customer demand and very often is the result of a close customer cooperation. These four new metal materials were designed and optimized specifically to the needs of additive manufacturing. We are increasing application opportunities for demanding industries by bringing AM-tailored alloys to our customers,” said Sascha Rudolph, SVP BU Metal Materials at EOS.

EOS StainlessSteel 254 is an austenitic stainless steel that comes with a 40/60 µm process. The material has an excellent stress corrosion cracking, and higher strength than conventional austenitic steel. The material is particularly suited for applications such as chlorinated seawater handling equipment, pulp, and paper manufacturing devices, as well as chemical handling equipment.

New metal AM materials from EOS. Including EOS StainlessSteel 254 and SuperDuplex, ToolSteel CM55, and NickelAlloy HAYNES 282.
EOS StainlessSteel SuperDuplex flange

The EOS StainlessSteel SuperDuplex comes with a 40/80 µm process. This is an austenitic-ferritic duplex stainless steel optimized for additive manufacturing while maintaining super duplex properties.  enabling high strength together with high corrosion resistance. The optimization of phase balance enables the use of the printed part in ‘as manufactured’ condition, in many use cases. This material is particularly suited for applications in the oil and gas industry, in pulp and paper manufacturing devices, mining, and offshore equipment.

Both the EOS StainlessSteel 254’s and the EOS StainlessSteel SuperDuplex’s high chromium, molybdenum, and nitrogen alloying give notable corrosion resistance, to both materials, in many difficult environments. These new metal AM materials also show great resistance to uniform, pitting, and crevice corrosion.

New metal AM materials from EOS. Including EOS StainlessSteel 254 and SuperDuplex, ToolSteel CM55, and NickelAlloy HAYNES 282.
Water jacket diecast mold insert from EOS ToolSteel CM55

EOS ToolSteel CM55 comes with a 40/80 µm process. It is a cobalt-free, ultra-high strength, and high hardness steel for tooling and engineering solutions. Its alloying elements and moderate carbon content form a strong and stable structure for demanding applications and use in elevated temperatures. Typical applications are cold and hot working tools, powertrain components, and parts for mechanical engineering.

EOS NickelAlloy HAYNES 282 is a nickel alloy powder intended for manufacturing parts on EOS metal systems. It is a precipitation-strengthened nickel-base superalloy with a unique combination of high-temperature strength, thermal stability, good corrosion, oxidation resistance, easy fabricability, and excellent weldability. It was developed for high-temperature structural applications and is manufactured under license from Haynes International Inc. Typical applications range from aerospace and rocket engine components to turbomachinery and gas turbine parts, to energy industry components.

New metal AM materials from EOS. Including EOS StainlessSteel 254 and SuperDuplex, ToolSteel CM55, and NickelAlloy HAYNES 282.
Aerospike nozzle printed with EOS NickelAlloy HAYNES 282

The EOS Quality Triangle is a unique approach in the AM industry, taking each of the three central technical elements of the production process into account – the system, the material, and the process. The data resulting from each combination is assigned a Technology Readiness Level (TRL) which makes the expected performance and production capability of the solution transparent.

EOS incorporates these TRLs into two categories – premium products (TRL 7-9), offering highly validated data, proven capability, and reproducible part properties, and core products (TRL 3 and 5), enabling early customer access to the newest technology still under development, and therefore less mature, with less data. All of the new metal AM materials mentioned above have a TRL 3 Core classification.

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Edward Wakefield

Edward is a freelance writer and additive manufacturing enthusiast looking to make AM more accessible and understandable.

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