MetalSolutions

EOS Copper CuCPfor AMCM M 290 1kW

EOS Copper CuCP

Commercially pure copper for the AMCM M 290 1 kW - designed toreach excellent conductivity properties. Suitable for a wide variety ofapplications.

Main Characteristics:

Typical Applications:→ Commercially pure copper→ Electrical motors→ Inductors→ Variety of industry applications(> 99.95 % purity)→ Excellent electrical and heat
conductivity

requiring excellent conductivity
properties

The EOS Quality TrianglesConiultng

EOS uses an approach that is unique in the AM industry, taking eachof the three central technical elements of the production process intoaccount: the system, the material and the process. The data resulting
from each combination is assigned a Technology Readiness Level (TRL)
which makes the expected performance and production capability of thesolution transparent.

MaterialPartProperties

Process

EOS incorporates these TRLs into the following two categories:capability and reproducible part properties.

→ Core products (TRL 3 and 5): enable early customer access tonewest technology still under development and are therefore lessmature with less data.

All of the data stated in this material data sheet is produced according toEOS Quality Management System and international standards.

Systemice→ Premium products (TRL 7-9): offer highly validated data, provenServ

Powder Properties

Powder chemical composition (wt.-%)Element

Min.

Max.

Cu

99.95

-O-

0.04

Powder particle size

Generic particle size distribution

50 µm SEM image of powder

15 - 53 µm

EOS Copper CuCP for AMCM M 290 1kW I 40 µm
Process Information

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

System set-up

AMCM M 290 1kW

EOSPAR name

CuCP_040_M291_1kW_200

Software requirements

EOSPRINT 2.11 or newer
EOSYSTEM 2.15 or newer

Powder part no.

9030-0006

Recoater blade

HSS, silicon or brushNozzle

EOS grid nozzle

Inert gas

Argon

Sieve

63 µm

Additional information

Layer thickness

40 µm

Volume rate

5.4 mm³/s

Minimal wall thickness

0.7 mmTRL
Core5Chemical and Physical Properties of Parts1

40 µm

Chemical composition of printed parts matches thechemistry 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.

Defects

ResultAverage defect percentage

0.4 % *
≥ 8.90 g/cm³

Density, ISO3369*Testing with virgin EOS Copper CuCP powder

200 µm 

Etched micrographMechanical properties
As manufactured

Yield strength
Rp0.2 [MPa]Tensile strength
Rm [MPa]

Elongation atbreak A [%]Modulus ofelasticity [GPa]40 µm horizontal

159.1

229.9

45.6

156.3

40 µm vertical

161.7

227.0

48.1

153.8

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

Heat Treatment
Heat treatment of parts built with EOS Copper CuCP is only optional, but canensure maximum conductivity and uniform structure.
Hold 1 h at ~1 000 °C, slow cooling. Treatment done in heavy argon flow or invacuum furnace.

Additional Data1

Surface Roughness

as manufactured Upskin flow direction

as manufactured Upskin against flow

as manufactured Downskin flow direction

as manufactured Downskin against flow

120110100Surface roughness Sa [µm]9080706050403020100304560
Manufacturing angle of the specimen

7590

Effects of Powder Reuse
The effects of powder reuse are investigated by running multiple test jobs, until
the powder amount was consumed. After every test job, electrical conductivity
and porosity were examined, to link powder aging effects to solid part quality.

Electrical conductivity and average
defect percentage of parts built with
EOS Copper CuCP is depended on theuse level of powder and position on
the building platform. The electricalconductivity can be maximized byheat treating the final parts.

As manufactured
Electrical conductivity

avg. 100.7 IACS%

Testing with virgin EOS Copper CuCP powder and according ASTM E1004-17, Eddy Current

Electrical conductivity

Variation

7th reuse

10th reuse

Electrical conductivity IACS %

101
100.5
100
99.5
99
98.5
98
Virgin powder 1st reuse

2nd reuse

3rd reuse

5th reuse

6th reuse

8th reuse

Electrical conductivity IACS % over multiple powder re-uses. The samples were as manufactured and taken from middle of building
platform. There were no measurements after the 4th and 9th reuse. Results may vary over the building platform. Testing according
ASTM E1004-17, Eddy Current.

Average defect percentage

Variation

Average defect percentage %0.600
0.500
0.400
0.300
0.200
0.100
0.000
Virgin powder 1st reuse

2nd reuse

3rd reuse

5th reuse

6th reuse

8th reuse

10th reuse

Average defect percentage % over multiple powder reuses. The samples were as manufactured and taken from middle of building
platform. There were no measurements after the 4th and 9th reuse. Results may vary over the building platform.

TRL

EOS Copper CuCP for AMCM M 290 1kW | 40 µm
Exposure Set for Inductors
Physical Properties of Parts1

CoreThe EOS Copper CuCP process contains of two exposuresets. The application specific exposure set is targeted forinductors.

Average defect percentage

0.5 %Minimum wall thickness

0.7 mm

1 mm 

Etched micrographTypical mechanical properties

as manufactured

Yield strength
Rp0.2 [MPa]Tensile strength
Rm [MPa]

Elongation at break
A [%]

156

220

55

Typical conductivity
As built surface[%IACS]

Grinded (P180)[%IACS]

Without heat treatment*

97.4 - 100.2

100.1 - 101.6

Heat treated*

98.4 - 101.4

101.5 - 102.6*Conductivity has been measured by eddy current meter. Results are depending on
surface orientation.

3

Headquarters
EOS GmbH
Electro Optical Systems
Robert-Stirling-Ring 1
D-82152 Krailling/Munich
Germany
Phone +49 89 893 36-0
info@eos.info

www.eos.info
EOS
EOS3DPrinting
EOS3DPrinting#responsiblemanufacturing#futureisadditive

Further Offices
EOS France
Phone +33 437 497 676
EOS Greater China
Phone +86 21 602 307 00
EOS India
Phone +91 443 964 8000
EOS Italy
Phone +39 023 340 1659
EOS Japan
Phone +81 45 670 0250
EOS Korea
Phone +82 2 6330 5800
EOS Nordic & Baltic
Phone +46 31 760 4640
EOS North America
Phone +1 877 388 7916
EOS Singapore
Phone +65 6430 0463

Part properties are provided for information purposes only and EOS makes
no representation or warranty, and disclaims any liability, with respect toactual part properties achieved. Part properties are dependent on a variety ofinfluencing factors and therefore, actual part properties achieved by the user
may deviate from the information stated herein.
This document does not on its own represent a sufficient basis for any part
design, neither does it provide any agreement or guarantee about the specificproperties of a material or part or the suitability of a material or a part for aspecific application.

1

Status 12/2022
EOS is certified according to ISO 9001. EOS® and EOSPRINT® are registered trademarks of EOS GmbH insome countries. For more information visit www.eos.info/trademarks.
Cover: This image shows a possible application.

EOS UK
Phone +44 1926 675 110