METAL SOLUTIONS

EOS Niobium C103

Material Data Sheet | Powder Product No. 9030-0036

EOS Niobium C103

C103 niobium alloy is a solution strengthened material developed for applications requiring excellent high temperature performance, while still retaining good fabricability and low part weight. 

MAIN CHARACTERISTICS

High strength and excellent creep resistance in high temperature propulsion environments. Superior processability in additive manufacturing compared to other more brittle refractory materials. 

TYPICAL APPLICATIONS

High-value, high-temperature applications, including:

  • Space propulsion systems e.g. nozzles, chambers
  • Aerospace thermal components e.g. heat shields

The EOS Quality Triangle

Material Data Sheet | Powder Product No. 9030-0036
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 chemical composition according to ASTM F3635 - 23.

Powder Chemical Composition (wt.-%)

Element Min. Max.
Nb Balance
Hf 9 11
Ti 0.7 1.3
Zr - 0.7
C - 0.015
H - 0.01
O - 0.035
Ta - 0.5
W - 0.5

Powder Particle Size

Generic Particle Size Distribution 15 - 63 µm

HEAT TREATMENT

Description

High-vacuum or inert gas atmosphere annealing according to ASTM F3635 - 23 for residual stress relieving and reduced anisotropy.  

Steps

Step 1: Annealing
High-vacuum annealing for 1 hour at 1100 °C.

Step 2: Cooling
Controlled cooling to room temperature. 

Process Data Sheet

EOS Niobium C103 for EOS M 290 | 40 µm

EOS M 290 - 40 µm - TRL 3

System Setup EOS M 290
EOS Material set C103_040_CoreM291
Powder Product No. 9030-0036
Required Software Plan EOS BUILD
Software Requirements

EOSPRINT 2.18 or newer
EOSYSTEM 2.17 or newer
Recoater Blade HSS (High Speed Steel)
Nozzle EOS Grid Nozzle
Inert gas Argon
Sieve 75 µm
Additional Information
Layer Thickness 40 µm
Volume Rate 3.2 mm³/s

Microstructure of the Produced Parts

Defects Thickness Result Number of Samples
Average Defect Percentage 40 µm 0.05 % -
Density EN ISO 3369 Thickness Result Number of Samples
Average Density 40 µm ≥ 8.80 g/cm³ -

Mechanical Properties

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 460 520 30 78 - -
Horizontal 480 550 30 76 - -



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 340 450 32 80 - -
Horizontal 345 455 32 80 - -

High-vacuum or inert gas atmosphere annealing according to ASTM F3635 - 23 for residual stress relieving and reduced anisotropy.  
Step 1: Annealing
High-vacuum annealing for 1 hour at 1100 °C.
Step 2: Cooling
Controlled cooling to room temperature. 

Hardness

EN ISO 6507 As Manufactured
Value 170
Unit HV5

Surface Roughness

Surface Roughness From To
Sa (µm) - -
Ra (µm) - -
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