EOS Adds Four New Metal Additive Manufacturing Materials

EOS has added four new metal additive manufacturing (AM) materials to its portfolio: EOS FeNi36, EOS NickelAlloy C22, EOS Steel 42CrMo4, and EOS StainlessSteel 316L-4404, each optimized for EOS Laser Powder Bed Fusion (LPBF) systems. These new materials have applications in the aerospace, energy, chemical, automotive, and marine industries.

EOS FeNi36: Iron-Nickel alloy

Designed for aerospace, space, defense, and energy applications, EOS FeNi36 is ideal for applications where stability under fluctuating temperatures is critical. With a low coefficient of thermal expansion (<2 ppm/K between 30–150°C), EOS FeNi36 provides lower thermal expansion than alloys such as 316L and MS1. Typical applications include optical housings, mirror mounts, cryogenic instrument components, optical benches, precision metrology inserts, and small composite tooling inserts.

The material will be showcased at Formnext 2025 with demonstration parts such as a lobed jet engine nozzle and optical housing. EOS FeNi36 is compatible with the EOS M 290 system and is commercially available now.

EOS NickelAlloy C22: High strength

EOS NickelAlloy C22 brings corrosion resistance, high strength, and toughness to industries where contact with biological and chemical media is unavoidable. The alloy is designed for applications in chemical processing and food processing, providing manufacturers with an AM-ready solution for components exposed to aggressive environments.

With EOS NickelAlloy C22, EOS extends its portfolio into new fields, including chemical industries. The material is initially compatible with EOS M 290 systems.

EOS Steel 42CrMo4: For mobility and automotive

EOS Steel 42CrMo4 is now optimized for AM. This low-alloyed steel has high toughness and strength, making it ideal for engineering components, gears, and shafts. By enabling the production of this steel for metal 3D printing, EOS provides automotive engineers with new possibilities for lightweight design, faster development cycles, and greater supply chain flexibility. 

EOS StainlessSteel 316L-4404: Industrial-grade 

EOS StainlessSteel 316L-4404 is a European industry-standard stainless steel variant that combines high ductility, toughness, strength, and corrosion resistance. The new chemistry variant is more industrial grade than standard EOS 316L, while maintaining compatibility with existing StainlessSteel 316L parameter sets. The material is compatible with a wide range of systems, including EOS M 290, EOS M 400, EOS M 400-4, and EOS M 300-4.

"With these additions, we continue to expand our materials portfolio to meet the most demanding industry requirements," says Hanna Pirkkalainen, head of product, EOS Oy. "Whether it is the unmatched thermal stability of EOS FeNi36, the corrosion resistance of NickelAlloy C22, or the accessibility of widely used steels like 42CrMo4 and 316L-4404, we are enabling our customers to innovate faster, address supply chain challenges, and bring additive manufacturing into new applications. Our team is excited to discuss our entire metal materials portfolio at Formnext."

Sources: Press materials received from the company and additional information gleaned from the company’s website.