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Published on August 22nd, 2016 | by Raja Sekhar Upputuri

EOS Cobalt Chrome MP1

EOS Cobalt Chrome MP1 is a cobalt-chrome-molybdenum-based super-alloy. It.It consists of cobalt,chromium and molybdenum mainly and other elements in smaller quantities.

Co (60 – 65 wt-%)
Cr (26 – 30 wt-%)

Mo (5 – 7 wt-% )

Si (<=1.0 wt-%)
Mn (<=1.0 wt-%)

Fe (<=0.75 wt-%)
C (<=0.16 wt-%)

Ni (<=0.10 wt-%)

Physical Properties

>Excellent strength combined with high toughness.
>The parts are easily machinable after the building process.
>They have good thermal conductivity and can be easily post-hardened to more than 50 HRC.
>They also have excellent polishability
ParameterAs Built (typical) After Age-Hardening
Tensile StrengthXY: 1350 ± 100 MPa; Z: 1200 ± 150 MPa
XY: 1100 ± 100 MPa; Z: 1100 ± 100 MPa
Yield StrengthXY: 1060 ± 100 MPa; Z: 800 ± 100 MPa
XY: 600 ± 50 MPa; Z: 600 ± 50 MPa

Elongation at breakXY: (11 ± 3 ) %; Z: (24 ± 4 ) %
min. 20%
Modulus of elasticityXY: 200 ± 20 GPa; Z: 190 ± 20 GPa
XY: 200 ± 20 GPa; Z: 200 ± 20 GPa
Hardness35- 45 HRC

Other Properties

Thermal conductivity13-33W/m°C
Max operating temperatureapprox. 1150 °C
Coefficient of thermal expansion

13.6-15.1 x 10-6 m/m °C

Melting range1350 - 1430 °C
Density8.3 g/cm³
Relative DensityApprox 100%

3D Printing Details

Technology
DMLS
Possible Post Processing
machined, spark-eroded, welded, micro shot-peened, polished and coated
Accuracy
20-50 Microns(small parts)
Min Wall Thickness
Approx. 0.3 mm
Min Layer Resolution
20 Microns
Volume Rate
1.6 mm³/s – 5.5 mm³/s
Surface Roughness
Ra: 4-12 Microns ; Rz: 20-50 Microns

Applications

>Functional prototypes
>Series-production parts
>Mechanical engineering
>Bio medical Applications

Design Guidelines

Min Wall Thickness0.3-0.4 mm
Min Layer Resolution20 Microns
Min Detail Size0.8 mm
Min Hole Diameter0.8 mm
Min Text Size 2.5 mm
Max Part Dimension300 mm

Gallery

 

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