Process Data Sheet

EOS StainlessSteel 316L-4441 for EOS M 290 | 40/80µm

EOS M 290 - 40/80 µm - TRL 3

Process Information Metal

This process product is optimized for flexible and fast production of EOS StainlessSteel 316L-4441 parts with the EOS M 290 system. The parameter set has three different layer thickness options that can all be utilized within the same build: 40 µm, 80 µm and 40/80 µm Skin. The 40 µm parameter set is ideal for parts needing great detail resolution and more dense structure. The 80 µm parameter set offers a build rate that is more than double that of the long established 40 µm parameter set. With the 40/80 µm Skin parameter set, the total build time can be reduced with the same surface quality. The parameter sets are assigned to different sections in the same build job depending on the requirements.

Main characteristics:

→ Parameter set for fast and cost efficient production of EOS StainlessSteel 316L parts in small series or serial production
→ With 80 µm parameter 100 % increase in productivity compared to the 40 µm FlexLine parameter set
→ Faster production without compromising the part qualit

System Setup EOS M 290
EOS Material set 316L_040_080_Core M291
Software Requirements

EOSPRINT 2.7 or newer
EOSYSTEM 2.11 or newer

Recoater Blade HSS (High Speed Steel)
Nozzle EOS Grid Nozzle
Inert gas Argon
Sieve 63 µm
Additional Information
Layer Thickness 40/80 µm
Volume Rate 3.7 - 8.4 mm³/s

Chemical and Physical Properties of Parts

Chemical composition of built parts is compliant to EOS StainlessSteel 316L powder chemical composition.

Microstructure of the Produced Parts

Defects Thickness Result Number of Samples
Average Defect Percentage 40 µm 0.1 % -
Average Defect Percentage 80 µm < 0.2 % -

Mechanical Properties

Mechanical Properties As Manufactured

EN ISO 6892-1 Room Temperature | 40 µm Yield Strength [MPa] Tensile Strength [MPa] Elongation at Break A [%] Reduction of Area Z [%] Modulus of elasticity [GPa] Number of Samples
Vertical 450 550 50 - - -
Horizontal 500 600 35 - - -

Mechanical Properties As Manufactured

EN ISO 6892-1 Room Temperature | 80 µm Yield Strength [MPa] Tensile Strength [MPa] Elongation at Break A [%] Reduction of Area Z [%] Modulus of elasticity [GPa] Number of Samples
Vertical 450 550 45 - - -
Horizontal 500 600 35 - - -

Surface Roughness

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