METAL SOLUTIONS

EOS NickelAlloy IN718 API

Material Data Sheet

EOS NickelAlloy IN718 API

IN718 Alloy According to Oil and Gas Industry Standard

EOS NickelAlloy IN718 API is a nickel-based alloy designed to meet the rigorous standard of the oil and gas industry. Parts printed using this alloy have high tensile ductility and excellent corrosion resistance.

MAIN CHARACTERISTICS

  • High impact toughness at low temperatures
  • High tensile ductility 
  • Excellent corrosion resistance in typical oil and gas environments
  • Available in 10 kg drum and 500 kg Big Bag packaging

TYPICAL APPLICATIONS

  • Piping, tubing, and manifolds for downhole applications
  • Pumping, separation, and injection equipment
  • Fixtures and fasteners

The EOS Quality Triangle

EOS uses an approach that is unique in the AM industry, taking each of the three central technical elements of the production process into account: 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 the solution transparent.

EOS incorporates these TRLs into the following two categories:
 
  • Premium products (TRL 7-9): offer highly validated data, proven capability and reproducible part properties. 
  • Core products (TRL 3 and 5): enable early customer access to newest technology still under development and are therefore less mature with less data.

All of the data stated in this material data sheet is produced according to EOS Quality Management System and international standards
EOS 3D Printing Solutions Quality Triangle

POWDER PROPERTIES

Powder and built part compositions meet the chemical composition requirements of API 6ACRA standard.

Powder Chemical Composition (wt.-%)

Element Min. Max.
Fe Balance
Ni 50 55
Cr 17 21
Nb + Ta 4.87 5.2
Mo 2.8 3.3
Ti 0.8 1.15
Al 0.4 0.6
C - 0.045
Co - 1
Mn - 0.35
Si - 0.35
P - 0.01
S - 0.01
B - 0.006
Cu - 0.23
Pb - 0.001
Se - 0.0005
Bi - 0.00005
Ca - 0.003
Mg - 0.006

Powder Particle Size

Generic Particle Size Distribution 20 - 55 µm

HEAT TREATMENT

Description

Heat treatment includes solution treatment, rapid quenching and aging steps. Developed according to data from: (i) standard "API 6ACRA, Age-hardened Nickel-based Alloys for Oil and Gas Drilling and Production Equipment (Houston, TX: American Petroleum Institute, 2015)", (ii) literature and (iii) test runs made at EOS. Detailed information on the heat treatment is available in the application notes.

Steps

Step 1:

Solution Treatment: 1060 °C ±10 °C, 120 min.
Quenching: forced Ar-gas quenching with rate 130 °C/min (1060-300 °C).

 

Step 2:

Aging: 815 °C ± 5 °C, 360 min. Forced Ar-gas cooling with rate ~25 °C/min (815-300 °C).

Process Data Sheet

EOS NickelAlloy IN718 API for EOS M 290 | 40 µm

EOS M 290 - 40 µm - TRL 9

System Setup EOS M 290
EOS Material set IN718_040_PerformanceM291_2.00*
Software Requirements

EOSPRINT 1.17 or newer
EOSPRINT 2.6 or newer

EOSYSTEM 2.9 or newer
Recoater Blade HSS (High Speed Steel)
Nozzle EOS Grid Nozzle
Inert gas Argon
Sieve 63 µm
Additional Information
Layer Thickness 40 µm
Volume Rate 4.2 mm³/s
Min. Wall Thickness Typical 0.3 - 0.4 mm

Chemical and Physical Properties of Parts

Heat treated microstructure. Etched with Kallings 2. Section parallel to the building direction.

Microstructure of the Produced Parts

Defects Thickness Result Number of Samples
Average Defect Percentage 40 µm 0.03 % 10
Density EN ISO 3369 Thickness Result Number of Samples
Average Density 40 µm 8.15 g/cm³ -

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 865 1236 28 47 - -
Horizontal 882 1267 26 45 - -

Heat treatment includes solution treatment, rapid quenching and aging steps and is developed according to data from: (i) standard ”API 6ACRA Age-hardened Nickel-based Alloys for Oil and Gas Drilling and Production Equipment (Houston, TX: American Petroleum Institute, 2015)“, (ii) literature and (iii) test runs made at EOS.
Detailed information on the heat treatment is available in the application 
notes.

Step 1:
Solution Treatment:  
1060 °C ±10 °C, 120 min.
Quenching:  
Forced Ar-gas quenching with rate 130 °C/min (1060-300 °C).

Step 2:
Aging:  
815 °C ± 5 °C, 360 min. Forced Ar-gas cooling with rate ~25 °C/min (815-300 °C).

Hardness

EN ISO 6508 Heat Treated
Value 37
Unit HRC

Impact Toughness

EN ISO 148-1, Charpy-V Heat Treated
Typical Impact Toughness [J] 71-73
Layer Thickness 40 µm


 


Samples: length 55mm, cross section 10mm x 10mm with a V-notch.
Test temperature: -60 °C according to API 6ACRA standard requirements.

Surface Roughness

Coefficient of Thermal Expansion

Temperature
13.1*10-6/K 25 – 100 ºC
13.7*10-6/K 25 – 200 ºC
14.1*10-6/K 25 – 300 ºC
14.4*10-6/K 25 – 400 ºC
14.7*10-6/K 25 – 500 ºC
15*10-6/K 25 – 600 ºC
15.5*10-6/K 25 – 700 ºC
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