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: pieces that break, deformations, thermal problems or simply unnecessary costs.

That's why, in Industrial additive manufacturing, Choosing the right material isn't just another step. It's a strategic decision.

In this guide, we explain what 3D printing materials exist, which are actually used at an industrial level (as in Additium3D) and how to choose the right one for your case.

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 not only influences resistance… influences everything:

• Mechanical behaviour
• Thermal resistance
• Surface finish
• Flexibility or rigidity
• Cost per piece
• Scalability in production

In other words: the material defines the final outcome.

And that's why, in industrial settings, the choice isn't based on “what's available”, but So you need the part.

Types of 3D printing materials

Generally, 3D printing materials are divided into two main groups:

Thermoplastics

They are the most used in industrial additive manufacturing.

They are characterised by being able to melt and solidify multiple times without completely losing their properties. This makes them ideal for processes such as FDM, SLS or MJF.

Examples:

• ABS
• PLA
• Nylon (PA12)
• TPU
• Fibre-reinforced materials

They are the key materials in functional production.

2. Resins (thermosetting)

They are mainly used in technologies such as SLA.

Unlike thermoplastics, they cannot be remelted once cured. They offer a Very high level of detail and surface finish.

They are ideal for:

• Visual prototypes
• Parts with complex geometry
• Moulds and models

The most commonly used 3D printing materials in industrial settings

This is where the value really comes in: the materials used in real-world projects.

At Additium3D, the focus isn't “having lots of materials”, but working with those who truly bring performance, reliability, and scalability.

FDM Materials: Versatility and Controlled Cost

The FDM technology It is the most flexible in terms of material variety.

These are the most commonly used:

PLA (Polylactic acid)

• Ideal for rapid prototyping
• Low cost
• Easy to print
• Not recommended for demanding functional use

Perfect for design validation.

ABS

• High impact resistance
• Good thermal behaviour
• Allow post-processing

One of the most used materials in manufacturing.

ABS GF (with glass fibre)

• Greater stiffness
• Better dimensional stability
• Good value for money

Widely used in functional technical parts

ASA CF (with carbon fibre)

• High outdoor resistance
• UV protection
• High durability

The best option when the part will be exposed to the environment.

PAHT CF (polyamide with carbon fibre)

• Very high mechanical strength
• It supports high temperatures
• Ideal for demanding environments

Intended for structural or load-bearing components.

TPU (flexible)

• Elasticity
• Shock absorption
• Gummy behaviour

Perfect for seals, guards or flexible parts.

Materials in 3D printing MJF: real industrial production

If we're talking about mass production, everything changes here.

The HP Multi Jet Fusion technology it is designed to produce functional parts with high repeatability, precision and speed

And here is some key material:

Polyamide 12 S (PA12)

It's the industry standard in MJF.

Why?

• High mechanical strength
• Dimensional stability
• Good thermal resistance
• Excellent surface finish
• Recyclability >90%

It allows the manufacture of everything from functional prototypes to final production parts.

Common applications:

• Technical housings
• Mechanical components
• Tooling
• Structural parts

It is the material that makes 3D printing a real alternative to injection moulding.

Materials in 3D SLS printing

The SLS technology shares a foundation with MJF, but with a different approach.

The protagonist here is:

Nylon (Polyamide)

• Durable
• Light
• Flexible
• High durability

Ideal for:

• Functional parts
• Complex assemblies
• End-use components

One of its great advantages is that it allows complex geometries to be manufactured without supports, opening up many design possibilities.

Materials in 3D SLA printing

When the objective is detail, precision, and finish, SLA is the best option.

In this case, the materials are specific resins:

Most commonly used types of resins

• Standard resin → prototypes and validation
• Clear resin → optical or visual parts
• Tough Resin → strong functional parts
• Flexible Resin → elastic parts
• High Temp Resin → high-temperature environments
• Rigid Resin → high structural rigidity

They are very versatile materials, but with a focus more oriented towards prototyping and validation than mass production.

How to choose the best 3D printing material

This is where many businesses fail: they choose the material based on price or habit.

The correct way to do it is different.

Define the use of the piece

It's not the same:

• A visual prototype
• A functional piece
• A structural component
• A final piece in production

Each case requires a different material.

2. Analyse the actual conditions

Key questions

• Will it bear load?
• Will it be outdoors?
• Will it be hot?
• Do you need flexibility?

This filters out 80% of options.

3. Think about production, not just the piece

A major decision:

• Is it a unique piece?
• Is it a short series?
• Is it continuous production?

Because everything changes here.

For example:

• FDM → prototypes and simple parts
• SLA → detail and validation
• SLS → functional parts
• MJF → mass production

Why material is key to the profitability of the project

Choosing the right material not only improves the piece.

Directly impacts:

• Manufacturing costs
• Production time
• Number of iterations
• Product durability
• Scalability

That's why, at Additium3D, the focus isn't just on manufacturing, but on advising on the choice of the right material from the outset.

Because a bad decision here will be paid for later.

Not all 3D printing materials are the same

3D printing has evolved a lot.

It's no longer just about “printing parts,” but about manufacturing with industrial criteria.

And that starts by properly understanding 3D printing materials:

• What properties do they have?
• In which technology do they work best?
• What kind of parts are they intended for?

If you choose well, you can reduce costs, speed up production, and improve performance. If not, you'll be limiting your own product.

Got a project and not sure what materials to choose?

If you are considering integrating 3D printing into your company – whether for prototyping, product improvement or mass production – Choosing the right material is the first step to ensuring real results.

At Additium3D works with you from the very beginningWe 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 piece, or start manufacturing without relying on moulds or large investments, tell us about your case. We will help you turn it into a viable, profitable, and production-ready solution.