EOS ToolSteel CM55 for EOS M 290 | 40 µm
EOS M 290 - 40/80 µm - TRL 3
Process Information Metal
The parameter set has three different layer thickness options that can all be utilized within the same build: 40µm, 80 µm and 40/80 µm Skin. For high productivity needs a 80 µm parameter set is included . Both can be used separately for different parts or combined by using 40/80 µm Skin with faster 80 µm for the core of the part and higher quality 40 µm building for the surface of the part with defined thickness. Sectionioning parts in vertical direction for different parameters is also possible.
| System Setup | EOS M 290 |
|---|---|
| EOS Material set | CM55_Ar_040_080_CoreM291; CM55_N2_040_080_CoreM291 |
| Software Requirements |
EOSPRINT 2.10 or newer EOSYSTEM 2.14 or newer |
| Recoater Blade | Ceramic |
| Nozzle | EOS Grid Nozzle |
| Inert gas | Argon, Nitrogen |
| Sieve | 75 µm |
| Additional Information | |
|---|---|
| Layer Thickness | 40/80 µm |
| Volume Rate | 4.1 - 7.8 mm³/s |
| Typical Dimensional Change after HT [%] | +0.2 % |
Chemical and Physical Properties of Parts
Chemical composition of printed parts matches the chemistry of EOS ToolSteel CM55 powder.
Microstructure of the Produced Parts
| Defects | Thickness | Result | Number of Samples |
|---|---|---|---|
| Average Defect Percentage | 40 µm | 0.07 % | - |
| Average Defect Percentage | 80 µm | 0.12 % | - |
| Density EN ISO 3369 | Thickness | Result | Number of Samples |
|---|---|---|---|
| Average Density | - | ≥ 7.5 g/cm³ | - |
Mechanical Properties
Mechanical Properties Heat Treated
| EN ISO 6892-1 Room Temperature | 40 µm | Yield Strength [MPa] | Tensile Strength [MPa] | Elongation at Break [%] | Reduction of Area Z [%] | Modulus of elasticity [GPa] | Number of Samples |
|---|---|---|---|---|---|---|
| Vertical | 1730 | 2030 | 4 | - | 230 | - |
| Horizontal | 1740 | 2040 | 4 | - | 230 | - |
Heat treated to 55 HRC.
Modulus of elasticity testing according to EN ISO 6892-1 Method A, Range 1 (0.00007 1/s)
Mechanical Properties Heat Treated
| EN ISO 6892-1 Room Temperature | 80 µm | Yield Strength [MPa] | Tensile Strength [MPa] | Elongation at Break [%] | Reduction of Area Z [%] | Modulus of elasticity [GPa] | Number of Samples |
|---|---|---|---|---|---|---|
| Vertical | 1700 | 2010 | 2.5 | - | - | - |
| Horizontal | 1710 | 2020 | 2.5 | - | - | - |
Heat treated to 55 HRC.
Modulus of elasticity testing according to EN ISO 6892-1 Method A, Range 1 (0.00007 1/s)
Impact Toughness
| EN ISO 148-1, Charpy-V Heat Treated | |
|---|---|
| Typical Impact Toughness [J] | 5 |
Testing according to ISO 148-1, V-notch at room temperature.
Surface Roughness
Temper resistance, 600°C
Coefficient of Thermal Expansion
| ASTM E228 | Temperature |
|---|---|
| 10.6*10-6/K | 25 – 100 ºC |
| 11.5*10-6/K | 25 – 200 ºC |
| 12*10-6/K | 25 – 300 ºC |
| 12.4*10-6/K | 25 – 400 ºC |
| 12.7*10-6/K | 25 – 500 ºC |
| 13.2*10-6/K | 25 – 600 ºC |