EOS StainlessSteel 316L is a corrosion resistant iron based alloy which has been optimized especially for processing on EOSINT M280 systems.

The parts built from EOS StainlessSteel 316L have chemical composition corresponding to ASTM F138 "Standard Specification for Wrought 18Cr-14Ni-2.5Mo Stainless Steel Bar and Wire for Surgical Implants (UNS S31673)". This kind of stainless steel is characterized having a good corrosion resistance and evidence that there are no leachable substances in cytotoxic concentrations.

Parts built from EOS StainlessSteel 316L can be machined, shot-peened and polished in as-built or stress relieved (AMS2759) states if required. Solution annealing is not necessary because the mechanical properties of as-built state are showing desired values (ASTM A403). Parts are not ideal in temperature range 427°C - 816°C where precipitation of chromium carbides occurs. Due to layer-wise building method, the parts have a certain anisotropy which could be seen from mechanical properties.

This material is ideal in:

• Lifestyle/Consumer - watches, other jewellery, spectacle frames, decorations, functional elements in electronic housing and accessories

• Automotive/Industrial - non-corroding common material, food and chemical plants

• Aerospace/Turbine industry - entry-level material for Laser Sintering Technology, mounting parts, brackets, heat exchangers

Layer thickness: 20 µm

Typical achievable part accuracy:
small parts ± 20-50 µm
large parts ± 0.2%