--- title: "3D printing FDM materials compared: which one to choose?" description: Compare FDM 3D printing materials—PLA, ABS, PET-G, PA12-CF—and find the best choice for strength, durability, eco-friendliness and printability. image: https://blog.niuo3d.com/hubfs/NIUO_testate_articoli_blog%20(1)-1.jpg --- [![Niuo - Think smart. Change way](https://blog.niuo3d.com/hs-fs/hubfs/Niuo_Logotipo_negativo.png?width=222&height=70&name=Niuo_Logotipo_negativo.png "Niuo - Think smart. 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In this article, we focus on the most commonly used polymers for FDM (Fused Deposition Modeling) printing—PLA, PA12-CF, ABS, PET-G—highlighting their characteristics, advantages, and disadvantages to help you quickly and confidently choose the best polymer for your 3D projects. ## Characteristics evaluated For each material, we assessed the following features: 1. **Mechanical strength** – The maximum stress a material can endure before breaking, rated on a scale of 0 to 10 (10 = very strong). 2. **Stiffness** – Material’s resistance to deformation, measured in MPa. 3. **Elongation at break** – The percentage increase in length a material undergoes when pulled until it breaks. 4. **Hardness** – Resistance to scratching, expressed on the Shore D scale. 5. **Durability** – The material’s ability to withstand degradation over time, rated 0–10 (10 = very durable). 6. **Printability** – How easy it is to print using FDM technology, rated 0–10 (10 = very easy). ### Overview of Materials ### **PLA – Eco-friendly and Biodegradable** PLA is a widely used bioplastic derived from renewable plant sources. It biodegrades and dissolves in water at temperatures above 70–80 °C, making it safe for food-contact objects like containers. With low shrinkage of around 2–3%, it’s less susceptible to warping compared to ABS.  ### **ABS – Shine and Toughness** ABS, or Acrylonitrile Butadiene Styrene, is a petroleum-based thermoplastic—durable, somewhat flexible, and impact-resistant. It’s commonly used in rapid prototyping across various sectors, from automotive to product design.  ### **PET-G – Durable and Easy to Work With** PET-G (Polyethylene Terephthalate Glycol) is a copolymer modified with glycol for enhanced chemical resistance, durability, and processability. It’s ideal for large flat prints, is food-safe, and water-resistant. ### **PA12-CF – Tough and Rigid** PA12-CF (Polyamide 12 reinforced with carbon fiber) is designed for FDM and delivers high mechanical strength, rigidity, and hardness—thanks to the carbon reinforcement. It’s perfect for structurally stable and wear-resistant applications. | Material | Key Advantages | Ideal For | | --- | --- | --- | | PLA | Biodegradable, low shrinkage, food-safe | Eco-friendly, low-warping prints | | ABS | Durable, impact-resistant, glossy finish | Functional prototypes, durable usage | | PET-G | Chemically resistant, durable, easy to print, food-safe | Large surfaces, food containers | | PA12-CF | High strength, rigidity, hardness | Functional parts requiring stiffness | Each material offers specific strengths—from PLA’s sustainability to PA12-CF’s structural performance—catering to varied needs. #### [Need tailored, professional support for your projects? 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