Al2139 AM – High Performance from the Powder Bed

EOS Aluminium Al2139 AM is setting new standards in lightweight design for additive metal manufacturing. Based on a high-strength 2000-series aluminium alloy, this material was developed specifically for the DMLS process (Direct Metal Laser Sintering) – combining high strength, thermal stability, and efficient post-processing in a single material.

In its heat-treated T4 condition, Al2139 AM achieves a yield strength of around 460 MPa and a tensile strength of up to 520 MPa. Compared to common AM alloys such as AlSi10Mg, Al2139 AM offers significant performance advantages, especially in applications operating between 50 °C and 200 °C.

Another key benefit is the simplified heat treatment: solution annealing, quenching, and natural aging are all it takes. This eliminates complex post-aging cycles and reduces active oven time by up to 88 %, making it highly attractive for serial production.

Versatile Applications

Al2139 AM is ideal for industries and use cases that demand lightweight construction, mechanical strength, and thermal resistance:

• Lightweight Structures
  Whether complex brackets, housings, or load-bearing parts – Al2139 AM enables high-strength, weight-optimized components. Perfect for mechanical engineering, robotics, or UAV systems.

• Aerospace & Aviation
  Reducing part weight and count while enabling design freedom – ideal for structural components, functional mounts, or integrated cooling solutions.

• Defense Applications
  Its robustness and thermal performance make this alloy a strong candidate for housings, heat sinks, and demanding structural elements.

• Cooling Applications
  Additively manufactured components with internal channels or bionic geometries offer significantly improved thermal conductivity – ideal for power electronics and thermal management systems.

• Motorsport
  Al2139 AM is also used in high-performance racing – for example, in wheel carriers, brackets, or fluid-handling components that must be extremely strong and incredibly light.

Surface & Finish

Al2139 AM also proves its versatility in post-processing:

• Vibratory finishing (tumbling) ensures smooth and consistent surfaces, reducing roughness and improving the tactile quality of parts.

• Anodizing adds corrosion protection and allows for colored finishes – ideal for visible components with high standards in durability and aesthetics.

Performance Meets Process Efficiency

Al2139 AM delivers outstanding material performance paired with process efficiency – making it a strong choice for companies looking to push the limits of metal additive manufacturing.

At Unlimital, we bring this material to life:
From engineering consulting and topology optimization to the printing process, post-processing, and final assembly – efficient, precise, and forward-thinking.

👉 Interested in exploring Al2139 AM for your next project?
Let’s talk – we’re ready to turn your idea into metal.