METAL SOLUTIONS

EOS Aluminium Al2139 AM

Material Data Sheet

EOS Aluminium Al2139 AM

Highest Strength Aluminium Alloy in AM

EOS Aluminium Al2139 AM is a 2000-series high strength alloy specifically designed for AM. It demonstrates outstanding performance in elevated temperatures up to 200°C. Excellent strength properties include yield and tensile strength around 500 MPa in heat treated state and allow lightweight part design. The fast and simple heat treatment procedure enables an affordable part production.

MAIN CHARACTERISTICS

  • Unmatched strength in temperatures between 50-200 °C
  • Robust one-step heat treatment
  • Parts can be electropolished and anodized

Download Process Data Sheet (PDF)

TYPICAL APPLICATIONS

  • Aerospace
  • Racing
  • Transportation & Mobility
  • Lightweight designs

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

The chemical composition of the EOS Aluminium Al2139 AM powder is modified from Aluminium Association Teal Sheet for Al2139 (wrought aluminium alloys).

Powder Chemical Composition (wt.-%)

Element Min. Max.
Al Balance
Cu 4.5 5.5
Mg 0.0 0.8
Ag 0.15 0.6
Mn 0.2 0.6
Zn 0.0 0.25
Si 0.0 0.1
Fe 0.0 0.15
Cr 0.0 0.05
V 0.0 0.05
Other Metallic Additions - 4.0

Powder Particle Size

GENERIC PARTICLE SIZE DISTRIBUTION 20 - 63 μm

SEM micrograph of EOS Aluminium Al2139 powder

HEAT TREATMENT

Description

EOS Aluminium Al2139 AM recommended T4 Heat Treatment

Solution annealing 45 min @ 490 °C, water quench. Natural aging 3 days in room temperature.

Steps

Step 1: Solution annealing of 45 minutes in 490 °C followed by immediate quenching to water.

Step 2: Natural aging in room temperature for 3 days.

Process Data Sheet

EOS Aluminium Al2139 AM for EOS M 290 | 60 µm

EOS M 290 - 60 µm - TRL 3

Process Information Metal

Process with good buildability, productivity, and excellent mechanical properties after heat treatment, also at elevated temperatures. Part and support design for high-strength aluminium is required.

System Setup EOS M 290
EOS Material set Al2139AM_060_CoreM291_110
Software Requirements

EOSPRINT 2.7 or newer

EOSYSTEM 2.11 or newer
Recoater Blade HSS (High Speed Steel)
Build Platform Temperature 175 °C
Nozzle EOS Grid Nozzle
Inert gas Argon
Sieve 75 µm
Additional Information
Layer Thickness 60 µm
Volume Rate 7.2 mm³/s
Wall Thickness 0.4 mm

Chemical and Physical Properties of Parts

Micrograph etched as manufactured

Microstructure of the Produced Parts

Defects Thickness Result Number of Samples
Average Defect Percentage 60 µm 0.2-0.3 % -
Density EN ISO 3369 Thickness Result Number of Samples
Average Density 60 µm ≥ 2.84 g/cm³ -

Mechanical Properties

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 460 520 4 - - -
Horizontal 460 540 6 - - -

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 350 380 6 - - -
Horizontal 350 380 8 - - -

Hardness

EN ISO 6506-1

Heat Treated
Value 162
Unit HBW 2.5/62.5

EN ISO 6506-1

As Manufactured
Value 112
Unit HBW 2.5/62.5

Elevated temperature properties

Elevated temperature properties


Elevated temperature tensile testing of EOS Aluminium 
Al2139 AM (T4) and a wrought grade reference material 
(T6 HT state) according to EN 2002-002

Process Data Sheet

EOS Aluminium Al2139 AM for EOS M 400-4 | 50 µm

EOS M 400-4 - 50 µm - TRL 3

Process Information Metal

High performance process with good microstructure and excellent mechanical properties and low anisotropy after heat treatment. Good mechanical properties at elevated temperatures in heat treated condition. Process offers good buildability of small features with soft recoating. Part and support design for high strength aluminium is required.

System Setup EOS M 400-4
EOS Material set Al2139AM_050_CoreM404
Software Requirements

EOSPRINT 2.10 or newer

EOSYSTEM 2.14 or newer
Recoater Blade HSS (High Speed Steel)
Build Platform Temperature 195 °C
Inert gas Argon
Sieve 75 µm
Additional Information
Layer Thickness 50 µm
Volume Rate up to 4 x 5.0 mm³/s
Wall Thickness 0.4 mm

Chemical and Physical Properties of Parts

Micrograph etched as manufactured

Microstructure of the Produced Parts

Defects Thickness Result Number of Samples
Average Defect Percentage 50 µm 0.1 % -
Density EN ISO 3369 Thickness Result Number of Samples
Average Density 50 µm ≥ 2.84 g/cm³ -

Mechanical Properties

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 450 530 6 - - -
Horizontal 460 550 7 - - -

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 380 430 8 - - -
Horizontal 380 430 10 - - -

Hardness

EN ISO 6506-1

Heat Treated
Value 168
Unit HBW 2.5/62.5

EN ISO 6506-1

As Manufactured
Value 115
Unit HBW 2.5/62.5

Elevated temperature properties

Elevated temperature properties


Elevated temperature tensile testing of EOS Aluminium 
Al2139 AM (T4) and a wrought grade reference material 
(T6 HT state) according to EN 2002-002.

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