Most Common 3D Printing Materials

 
various filament materials and colors

Outline: Below, we outline some of the most popular materials for 3D printing. Also follow the links for focused pages on various types of material below.

Understanding Different 3D Print Materials:

Filament-Based Materials for Rapid Prototyping

Plastic 3D Printing Materials:

3D Printing, also known as Additive Manufacturing, deposits layer by layer and uses a variety of materials depending on the printing method and desired outcome. The most widely used 3D Printing technology is Fused Deposition Modeling (FDM), which primarily employs thermoplastic filaments.

filament mechanical properties
legend for materials

In general, PLA is the most common 3d printing material as it is easy to print, relatively inexpensive and works well without a heated bed or enclosure. This is followed by ABS for FDM (Fused Deposition Modeling) printers due to their ease of use and affordability. PLA is biodegradable and easy to print with, while ABS is more durable and heat-resistant. PETG offers a good balance between ease of use and durability. Each material has its properties, strengths, and suitable applications. In production for very low-cost parts injection molding is often used. However, in low quantities, Additive Manufacturing is more cost-effective as high-cost molds are not needed.

Here's an overview of common 3D printer filaments:

Thermoplastic Elastomers: This involves many elastomers other than TPU.  One example is Ninjaflex.

 

Composites

Carbon Fiber Composite Materials

As can been seen on the figure above, PAHT-CF and PPA-CF have very impressive tensile strength and moduli. PET-CF is stronger than PETG-CF

Common materials used in injection molding

3D Print Materials aren’t all in filament form. There are many Resins used for SLA (Stereolithography) and DLP (Digital Light Processing) printers with a wide range of material properties

  1. Resin (for SLA/DLP printers):

    • Provides high detail and smooth surface finish

    • Various formulations for different properties (tough, flexible, castable)

  2. Metal powders (for SLS/DMLS printers):

    • Used for creating functional metal parts

    • Materials include aluminum, titanium, stainless steel, and more

  3. Ceramic powders:

    • For specialized applications in industries like aerospace and medical

Each material has its unique properties, strengths, and weaknesses, making them suitable for different applications. The choice of material depends on the specific requirements of the project, such as mechanical properties, environmental resistance, biocompatibility, and post-processing needs.

 

Material Selection Summary

For Beginners:

  • Start with PLA or PLA+

  • Consider PETG for more demanding applications

  • Avoid high-temperature materials until experienced

For Functional Parts:

  • ABS or ASA for temperature resistance

  • Nylon for wear resistance

  • PETG for chemical resistance

  • Carbon fiber composites for strength

For Outdoor Applications:

  • ASA for UV resistance

  • PP for marine environments

  • Carbon fiber ASA for structural outdoor parts

For Professional/Industrial Use:

  • PEEK for ultimate performance

  • PEI for aerospace applications

  • PPSU for medical devices

  • PC for impact-critical applications

Printing Considerations

Nozzle Requirements:

  • Standard brass nozzles: PLA, PETG, ABS, ASA

  • Hardened steel nozzles: Carbon fiber materials, abrasive filaments

  • Ruby or sapphire nozzles: Extreme abrasive materials

Printer Requirements:

  • Entry-level printers: PLA, PLA variants

  • Mid-range enclosed printers: ABS, ASA, PETG, Nylon

  • High-temperature printers: PC, PEI, PEEK

  • Industrial printers: All materials with proper setup

Storage Requirements:

  • Hygroscopic materials (Nylon, PVA, PETG): Dry storage essential

  • Standard materials (PLA, ABS): Cool, dry storage recommended

  • High-performance materials: Vacuum storage often required