3D Printing NickelAlloy IN718

Metal 3D Printing Technical Parameters

• 1. The maximum printing size of metal 3D printer: 250x250x325mm;
• 2. 3D printing layer thickness: 0.02mm~0.04mm;
• 3. The achievable accuracy of 3D printing: Typical accuracy: ± 0.02-0.05 mm (Accuracy is related to geometry. It varies according to product size, printing direction, materials and post-processing methods.);
• 4. Post-processing: high temperature annealing, polishing, welding and other processing;

3D Printing Material Characteristics

3D printing metal powder nickel alloy NickelAlloy IN718 corresponds to the chemical composition: UNS N07718, AMS 5662, AMS 5664, W. NR 2.4668, DIN nicr19fe19nbmo3. This precipitation, hardening nickel-chromium alloy is characterized by good tensile, fatigue, creep and breaking strength at temperatures up to 700°C (1290°F).

This material is ideal for high-temperature applications, such as aviation rocket missile gas turbine engine parts, chemical, oil well, petroleum, and natural gas industrial parts, power and industrial parts, etc., also have good low-temperature application potential.

The 3D printed parts of NickelAlloy IN718 material can be easily quenched by precipitation hardening heat treatment. Can be processed, spark corrosion, welding, micro shot peening, polishing and coating. Due to the layered construction method, the part has a certain XYZ axis anisotropy-see the technical data of the example.

Material Data Of NickelAlloy IN718

Chemical composition

• Ni (50-55 wt-%)
• Cr (17.0-21.0 wt-%)
• Nb (4.75-5.5 wt-%)
• Mo (2.8-3.3 wt-%)
• Ti (0.65-1.15 wt-%)
• Ai(0.20 – 0.80 wt-%)
• Co (≦1.0 wt-%)
• Cu (≦0.3 wt-%)
• C(≦0.08 wt-%)
• Si, Mn (each ≦0.35 wt-%)
• P, S (each ≦0.015 wt-%)
• B (0.006 ≦0.006wt-%)
• Fe (balance)

Accuracy of parts

• Small parts approx. 40 – 60 µm
• Large parts ±0.2%
• Minimum wall thickness approx. 0.3 – 0.4 mm
• approx. 0.012 – 0.016 inch

Surface Roughness

• After polishing Rz up to ＜0.5μm
• Rz up to ＜ 0.02 x 10-³ inch
• Can be very finely polished
• After fine shot peening, Ra 4 – 6.5 μm, Rz 20-50 μm
• Ra 0.16-0.25 x 10-³ inch
• Rz 0.78 – 1.97 x 10-³ inch

20℃(68℉) mechanical properties of parts

Just finished printing AMS5662 AMS5664
Heat treatment program Heat treatment program management program

Tensile strength

• – In the horizontal direction (XY) 1060 ±50Mpa 154± 7ksi
• – In the vertical direction (Z) 980±50Mpa min.1241Mpa(180ksi) min.1241Mpa (180ksi)
  (142± 7ksi) 1400±100Mpa) (1380±100Mpa) (203±15ksi) (200±15ksi)

Yield strength (RP 0.2%)

• – In the horizontal direction (XY) 780±50Mpa
  113 ± 7 ksi
• – In the vertical direction (Z) 634±50 MPa min.1034Mpa(105ksi) min.1241Mpa(180ksi)
  (92±7ksi) 1150±100Mpa 1240±100Mpa
  (167±15ksi) (180±15ksi)

Modulus of Elasticity

• – In the horizontal direction (XY) typ. 160±20 GPa
  23 ± 3 Msi
• – In the vertical direction (Z) 170±20 GPa 170±20 GPa
  24.7 ± 3 Msi 24.7 ± 3 Msi

Elongation at break

• – In the horizontal direction (XY) (27 ± 2) %
• – Vertical direction (Z) (31 ± 5)% min.12% min.%
  Typ.(15±3)% Typ.(18±5)%

Hardness apporx.30HRC apporx.47HRC apporx.43HRC
apporx.287HRC apporx.446HRC apporx.400HRC