3D Printing Materials: a Complete Guide to Choosing the Best for Each Project
The choice of 3D printing materials is, in practice, what determines whether a part works... or not. You can have a good design, good technology and even a good product idea. But if the material is not aligned with the end use, the result falls short: parts break, deformation, thermal problems or simply unnecessary costs. That's why, in industrial additive manufacturing, choosing the right material is not just another step. It is a strategic decision. In this guide we explain what 3D printing materials exist, which ones are actually used on an industrial level (as in Additium3D) and how to choose the right one for you. What are 3D printing materials and why are they key? When we talk about 3D printing materials, we are referring to the composites used to manufacture parts layer by layer using technologies such as FDM, SLA, SLS or MJF. The difference compared to other traditional processes is clear: here the material does not only influence the strength... it influences everything: In other words: the material defines the final result. And that is why, in industrial environments, it is not chosen for “what is available”, but for what the part needs. Types of 3D printing materials Generally speaking, 3D printing materials can be divided into two main groups: 1. Thermoplastics These are the most commonly used in industrial additive manufacturing. They are characterised by the fact that they can be melted and solidified several times without completely losing their properties. This makes them ideal for processes such as FDM, SLS or MJF. Examples: They are the key materials in functional production. 2. Resins (thermosets) These are mainly used in technologies such as SLA. Unlike thermoplastics, they cannot be re-melted once cured. They offer a very high level of detail and surface finish. They are ideal for: 3D printing materials most commonly used in industrial environments This is where the value really comes in: materials that are used in real projects. At Additium3D, the focus is not on “having lots of materials”, but on working with the ones that really deliver performance, reliability and scalability. FDM materials: versatility and controlled cost FDM technology is the most flexible in terms of material variety. These are the most commonly used: PLA (Polylactic acid) Perfect for design validation. ABS One of the most widely used materials in manufacturing. ABS GF (with glass fibre) Widely used in functional technical parts ASA CF (with carbon fibre) The best option when the part is going to be exposed to the environment. PAHT CF (polyamide with carbon fibre) Designed for structural or load-bearing parts. TPU (flexible) Perfect for seals, protections or flexible parts. Materials in MJF 3D printing: real industrial production When it comes to mass production, everything changes here. HP Multi Jet Fusion technology is designed to produce functional parts with high repeatability, precision and speed. And there's one key material here: Polyamide 12 S (PA12) It's the industry standard in MJF. Why? It makes it possible to manufacture everything from functional prototypes to final parts in series production. Typical applications: It's the material that makes 3D printing a real alternative to injection moulding. SLS 3D printing materials SLS technology shares the same base as MJF, but with a different approach. Here the protagonist is: Nylon (Polyamide) Ideal for: One of its great advantages is that it allows complex geometries to be manufactured without supports, which opens up many design possibilities. Materials in 3D printing SLA When the focus is on detail, precision and finish, SLA is the best option. In this case, the materials are specific resins: The most commonly used types of resins are very versatile materials, but with a focus on prototyping and validation rather than mass production. How to choose the best 3D printing material This is where many companies fail: they choose the material based on price or habit. The right way to do it is different. 1. Define the use of the part It is not the same: Each case requires a different material. 2. Analyse the actual conditions Key questions: This filters the 80% of options. 3. Think about production, not just the part An important decision: Because here everything changes. For example: Why material is key to the profitability of the project Choosing the right material doesn't just improve the part. It has a direct impact on: That's why, at Additium3D, the focus is not just on manufacturing, but on advising on the choice of the right material right from the start Because a bad decision here is paid for later. Not all 3D printing materials are the same 3D printing has evolved a lot. It is no longer just about “printing parts”, but about manufacturing to industrial standards. And that starts with a good understanding of 3D printing materials: If you make the right choice, you can reduce costs, speed up production and improve performance. If you don't, you will be limiting your own product. Do you have a project and don't know which material to choose? If you are considering integrating 3D printing in your company -whether for prototyping, product improvement or mass production- choosing the right material is the first step to ensure real results. At Additium3D we work with you from the start: we analyse your part, its end use and your business objectives to recommend not only the material, but also the most efficient technology in terms of cost, performance and scalability. If you want to validate an idea, optimise an existing part or start manufacturing without relying on moulds or large investments, tell us about your case. We can help you turn it into a viable, cost-effective and production-ready solution.
