The evolution of additive manufacturing materials has been, historically, one of the main drivers of technological and industrial development. In this sector, additive manufacturing stands as an inflection point, since it not only allows new geometries, but also drives material innovation with specific properties and advanced applications.
First of all, it is important to understand that materials for 3D printing are not simply an adaptation of traditional ones. Materials are being developed specifically for these processes, which allows optimizing properties such as mechanical strength, lightness, conductivity or thermal behavior.
On one hand, there are advanced polymeric materials, widely used in 3D printing for their versatility and cost. On the other hand, metals and alloys are gaining prominence in demanding industrial sectors, such as aeronautics or automotive, where high mechanical performance is required. Likewise, composite and functional materials open new possibilities, allowing the integration of multiple properties in a single part.
Furthermore, innovation in this field not only responds to the emergence of new materials, but also to the need to solve specific applications. In this way, the relationship between material and application becomes bidirectional: while some materials generate new opportunities, in other cases it is industrial demands that drive their development.
In this context, it is essential to understand the key mechanical properties of materials used in additive manufacturing, as well as their current limitations and challenges. Among these challenges, process repeatability, industrial certification and material sustainability stand out.
Types of materials in additive manufacturing
Below are the main materials in additive manufacturing, classified according to their nature and industrial use:
Polymers
- PLA (polylactic acid)
- ABS (acrylonitrile butadiene styrene)
- PETG
- Nylon (PA6, PA12)
- Photopolymer resins (SLA/DLP)
Metals
- Stainless steel
- Titanium (Ti6Al4V)
- Aluminium (AlSi10Mg)
- Inconel (superalloys)
Composite materials
- Carbon fiber reinforced polymers
- Fiberglass
- Hybrid composites
Ceramics and advanced materials
- Alumina
- Zirconia
- Biocompatible materials
- Conductive materials
Comparison of materials in additive manufacturing
| Material type | Advantages | Disadvantages | Typical applications |
|---|---|---|---|
| Polymers | Low cost, ease of printing, versatility | Lower mechanical and thermal resistance | Prototypes, lightweight functional parts |
| Metals | High strength, durability, industrial use | High cost, complex processes | Aeronautics, automotive, medicine |
| Composites | High rigidity, weight reduction | Greater processing difficulty | Advanced engineering, tooling |
| Ceramics | High thermal and chemical resistance | Fragility, technical complexity | Medical sector, chemical industry |
Webinar: Materials and Innovation in Additive Manufacturing
This content is part of the webinar: Materials and Innovation in Additive Manufacturing
📅 September 14, 2023
🕙 10:00h
💻 Online format
Speaker: José María Cabrera, professor at UPC in the Department of Materials Science and Engineering and director of the CIM UPC Foundation.
During the session, the following topics will be covered:
- The classification of materials throughout history
- The evolution of materials in relation to production processes
- The mechanical properties required in industrial environments
- The impact of additive manufacturing on the development of new materials
- Current and future challenges in material innovation