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.

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