Process Data Sheet

EOS Copper CuCP for EOS M 300-4 1kW | 40 µm

EOS M 300-4 1kW - 40 µm - TRL 3

Process Information Metal

The EOS Copper CuCP process contains two exposure sets. The default exposure set with Technology Readiness Level 5 for general use and bulkier parts and an application specific exposure set targeted for inductors.

System Setup EOS M 300-4 1kW
EOS Material set CuCP_040_CoreM314
Required Software Plan EOS BUILD
Software Requirements

EOSPRINT 2.15 or newer

EOSYSTEM 2.19 or newer

Recoater Blade HSS (High Speed Steel)
Inert gas Argon
Sieve 63 µm
Additional Information
Layer Thickness 40 µm
Volume Rate Default: 5.4 mm³/s; Inductor: 4.6 mm³/s
Min. Wall Thickness Default: 0.7 mm; Inductor: 0.6 mm

Chemical and Physical Properties of Parts

Chemical composition of printed parts matches the chemistry of EOS Copper CuCP powder, but can vary due to different oxygen levels in the process, depending on the machine and use level of the powder.

Microstructure of the Produced Parts

Defects Thickness Result Number of Samples
Average Defect Percentage 40 µm 0.25 % -
Average Defect Percentage 40 µm 0.4 % -
Density EN ISO 3369 Thickness Result Number of Samples
Average Density 40 µm ≥ 8.88 g/cm³ -

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 165 230 45 - - -
Horizontal 155 230 40 - - -

Modulus of elasticity testing according to EN ISO 6892-1 Method A, Range 1 (0.00007 1/s).

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 155 220 35 - - -
Horizontal 155 230 45 - - -

Heat treatment of parts built with EOS Copper CuCP is only optional, but can ensure maximum conductivity and uniform structure. 


Hold 1 h at ~1 000 °C, slow cooling. Treatment done in heavy argon flow or in vacuum furnace.

Modulus of elasticity testing according to EN ISO 6892-1 Method A, Range 1 (0.00007 1/s).

Surface Roughness

Electrical Conductivity

Orientation Typical Electrical Conductivity [%IACS]
As Manufactured | 40 µm | Default Vertical 99.6
As Manufactured | 40 µm | Default Horizontal 99.6
Orientation Typical Electrical Conductivity [%IACS]
As Manufactured | 40 µm | Application optimised - Inductors Vertical 99.7
As Manufactured | 40 µm | Application optimised - Inductors Horizontal 99.7
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