METAL SOLUTIONS

EOS FeNi36

Material Data Sheet

EOS FeNi36

Nickel-Iron alloy with low coefficient of thermal expansion 

EOS FeNi36 is a nickel-iron alloy characterized by low coefficient of thermal expansion within the temperature range of 30 to 150 °C.

MAIN CHARACTERISTICS

  • Very low coefficient of thermal expansion (30-150 °C)
  • Excellent dimensional stability under thermal cycling

TYPICAL APPLICATIONS

  • Housings and structures for optical and scientific instruments
  • Aerospace and satellite structures
  • Other applications requiring low thermal expansion

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

Material according to ASTM-F1684-06.

Powder Chemical Composition (wt.-%)

Element Min. Max.
Fe Balance
Ni 35.5 37.0
Si - 0.4
Mn - 0.6
Cr - 0.25
Co - 0.1
C - 0.05
Al - 0.1
Mg - 0.1
Zr - 0.1
Ti - 0.1
P - 0.015
S - 0.015

Powder Particle Size

GENERIC PARTICLE SIZE DISTRIBUTION 15 - 53 μm

SEM image of EOS FeNi36 powder

HEAT TREATMENT

Description

Anneal the part in a non-oxidizing atmosphere for a minimum of 1 h at 875 °C +/-25 °C  when thoroughly heated.

Cool at a rate not exceeding 300°C/h.

Process Data Sheet

EOS FeNi36 for EOS M 290 | 40 µm & 80 µm

EOS M 290 - 40 µm - TRL 3

Process Information Metal

This process product is optimized for flexible and fast production of EOS FeNi36 parts with the EOS M 290 system. The parameter set has two different layer thickness options that can all be utilized within the same build: 40 µm and 80 µm. The 40 µm parameter set is ideal for parts needing great detail resolution and more dense structure. The 80 µm parameter set offers a build rate that is more than double that of the 40 µm parameter set. The parameter sets are assigned to different sections in the same build job depending on the requirements.

System Setup EOS M 290
EOS Material set FeNi36_040_080_CoreM291
Required Software Plan EOS BUILD
Software Requirements

EOSPRINT 2.13 or newer
EOSYSTEM 2.17 or newer
Recoater Blade Ceramic
Nozzle EOS Grid Nozzle
Inert gas Argon
Sieve 75 µm
Additional Information
Layer Thickness 80 µm
Volume Rate 3.7-7.9 mm³/s
Typical Dimensional Change after HT [%] 0.0 %

Chemical and Physical Properties of Parts

Etched micrograph, as manufactured

Microstructure of the Produced Parts

Defects Thickness Result Number of Samples
Average Defect Percentage - 0.05 % -

Mechanical Properties

Mechanical Properties As Manufactured

EN ISO 6892-1 Room Temperature Yield Strength [MPa] Tensile Strength [MPa] Elongation at Break [%] Reduction of Area Z [%] Number of Samples
Vertical 340 420 40 78 - -
Horizontal 380 460 35 80 - -

Mechanical Properties Heat Treated

EN ISO 6892-1 Room Temperature Yield Strength [MPa] Tensile Strength [MPa] Elongation at Break [%] Reduction of Area Z [%] Number of Samples
Vertical 310 420 42 78 - -
Horizontal 320 460 36 78 - -

Anneal the part in a non-oxidizing atmosphere for a minimum of 1 h at 875 °C +/-25 °C  when thoroughly heated. Cool at a rate not exceeding 300°C/h.

Mechanical Properties Heat Treated

Room Temperature Yield Strength [MPa] Tensile Strength [MPa] Elongation at Break [%] Reduction of Area Z [%] Number of Samples
Vertical 295 430 40 78 - -
Horizontal 305 450 37 80 - -

Anneal the part in a non-oxidizing atmosphere for a minimum of 1 h at 875 °C +/-25 °C  when thoroughly heated. Cool at a rate not exceeding 300°C/h.

Hardness
Value 140
Unit HV

Surface Roughness

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