Process Data Sheet

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

EOS M 290 - 40 µm - TRL 7

Process Information Metal

This process product is optimized for building high quality parts with EOS M 290 system reliably using EOS StainlessSteel 316L-4441. Mechanical properties have been validated to TRL7 level.

System Setup EOS M 290
EOS Material set 316L_040_FlexM291
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 µm
Volume Rate 3.7 mm³/s
Wall Thickness 0.1 mm
Typical Dimensional Change after HT [%] +0.2 %

Chemical and Physical Properties of Parts

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

Micrograph of polished surface

Microstructure of the Produced Parts

Defects Thickness Result Number of Samples
Average Defect Percentage 40 µm 0.015 % 20
Density EN ISO 3369 Thickness Result Number of Samples
Average Density 40 µm ≥7.97 g/cm³ 20

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 490 580 49 - - 162
Horizontal 530 630 41 - - 72
T95: Tolerance intervals provide lower bounds where 95 % of the population falls with 95 % confidence. Tolerance intervals are based on validation data/QA statistics and are not directly transferable to other systems.

Surface Roughness

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