Process Information Metal
The material set enables processing of EOS NickelAlloy IN718 in 40 μm and 80 μm layer thicknesses using argon as inert gas. This set is a major overhaul of IN718_040_080_HiProM291 1.03 with new exposure options with improved low angle buildability and changed 40 μm exposure.
The exposure sets included are:
“EOS_Part” is the classic 40 μm set familiar from IN718_040_PerformanceM291 2.13. Full datasheet available here.
“EOS_Part_Fast” is the 80 μm set familiar from IN718_040_080_HiProM291 1.03.
“EOS_Part_LowAngle” presents a new exposure set with highly improved buildability of low angles with good surface roughness in 40 μm.
“EOS_Part_Fast_LowAngle” presents a new exposure set with highly improved buildability of low angles with good surface roughness in 80 μm.
| System Setup | EOS M 290 |
|---|---|
| Powder Product No. | 9011-0020 / 9030-0022 |
| Recoater Blade | HSS (High Speed Steel) |
| Nozzle | EOS Grid Nozzle |
| Inert gas | Argon |
| Sieve | 63 µm |
| Additional Information | |
|---|---|
| Layer Thickness | 40 um, 80 µm |
| Volume Rate | 4.6 / 8.2 mm³/s |
| Min. Wall Thickness | Typical 0.3 - 0.4 mm mm |
Chemical and Physical Properties of Parts
Microstructure of the Produced Parts
| Defects | Thickness | Result | Number of Samples |
|---|---|---|---|
| Average Defect Percentage | 40 µm | 0.01 % | - |
| Average Defect Percentage | 80 µm | 0.03 % | - |
| Density EN ISO 3369 | Thickness | Result | Number of Samples |
|---|---|---|---|
| Average Density | 40 µm | ≥ 8.15 g/cm³ | - |
| Average Density | 80 µm | ≥ 8.15 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 A [%] | Reduction of Area Z [%] | Modulus of elasticity [GPa] | Number of Samples |
|---|---|---|---|---|---|---|
| Vertical | 1190 | 1390 | 15 | - | - | - |
| Horizontal | 1270 | 1530 | 17 | - | - | - |
The data has been generated with the exposure set "EOS_Part_LowAngle". See release note for details.
Heat treatment procedure conform to Aerospace Material Specification AMS 2774 and AMS 5662.
As manufactured microstructure for additively manufactured IN718 consists of gamma phase (γ). Heat treatment for IN718 is required to produce desired microstructure and part properties (gamma double prime precipitates, γ"). Heat treatment is also used to relieve stresses.
Step 1:
Solution Anneal: hold at 954 °C (1750 °F ) for 1 hour per 25mm (0.98 inch) of thickness, air (/argon) cool
Step 2:
Ageing treatment; hold at 718 °C (1325 °F ) 8 hours, furnace cool to 621 °C (1150 °F ) and hold at 621 °C (1150 °F ) for total precipitation time of 18 hours, air (/argon) cool
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 | 660 | 970 | 33 | - | - | - |
| Horizontal | 190 | 170 | 27 | - | - | - |
The data has been generated with the exposure set "EOS_Part_LowAngle". See release note for details.
Mechanical Properties Heat Treated
| EN ISO 6892-1 Method A, Range 1 (0.00007 1/s) Room Temperature | 80 µm | Yield Strength [MPa] | Tensile Strength [MPa] | Elongation at Break A [%] | Reduction of Area Z [%] | Modulus of elasticity [GPa] | Number of Samples |
|---|---|---|---|---|---|---|
| Vertical | 1200 | 1440 | 16 | - | - | - |
| Horizontal | 1230 | 1490 | 14 | - | - | - |
The data has been generated with the exposure set "EOS_Part_Fast_LowAngle". See release note for details.
Heat treatment procedure conform to Aerospace Material Specification AMS 2774 and AMS 5662.
As manufactured microstructure for additively manufactured IN718 consists of gamma phase (γ). Heat treatment for IN718 is required to produce desired microstructure and part properties (gamma double prime precipitates, γ"). Heat treatment is also used to relieve stresses.
Step 1:
Solution Anneal: hold at 954 °C (1750 °F ) for 1 hour per 25mm (0.98 inch) of thickness, air (/argon) cool
Step 2:
Ageing treatment; hold at 718 °C (1325 °F ) 8 hours, furnace cool to 621 °C (1150 °F ) and hold at 621 °C (1150 °F ) for total precipitation time of 18 hours, air (/argon) cool
Mechanical Properties As Manufactured
| EN ISO 6892-1 Method A, Range 1 (0.00007 1/s) Room Temperature | 80 µm | Yield Strength [MPa] | Tensile Strength [MPa] | Elongation at Break A [%] | Reduction of Area Z [%] | Modulus of elasticity [GPa] | Number of Samples |
|---|---|---|---|---|---|---|
| Vertical | 640 | 980 | 32.5 | - | - | - |
| Horizontal | 740 | 1040 | 29 | - | - | - |
The data has been generated with the exposure set "EOS_Part_Fast_LowAngle". See release note for details.
Surface Roughness
| Surface Roughness | From | To |
|---|---|---|
| Sa (µm) | - | - |
| Ra (µm) | - | - |