Common 3D Printing Materials,
from standard filaments to novel.

The common 3D printing materials for FFF are PLA and PLA+ (easiest to print, best for prototypes), PETG (durable, chemical-resistant, food-safe capable), ABS and ASA (impact- and weather-resistant), Nylon/PA (tough and wear-resistant), and PC (strong and heat-resistant). ALT stocks and prints all of these base polymer families, plus carbon fiber composites, high-performance engineering polymers, flexible elastomers, and resins.

Among printer-accessible thermoplastics, carbon fiber composites deliver the highest tensile performance — PAHT-CF and PPA-CF are the highest-performing printable CF composites, with PC-CF and PET-CF close behind. For high-temperature strength, PEEK is the gold standard at 360–400°C print temperature with heat resistance above 250°C, followed by PEI/Ultem (over 170°C service) and PPSU (over 180°C).

For outdoor and field deployment, ASA is the top pick — ABS-equivalent mechanical properties with built-in UV and weather resistance and no post-processing. ASA-CF adds carbon fiber stiffness for outdoor structural parts in automotive and field robotics, and PP (polypropylene) is fully waterproof with excellent chemical resistance for marine applications.

ALT offers TPU 98A (the most printable TPU grade — waterproof, abrasion-resistant, and multi-material AMS compatible), foaming TPU (process-controlled shore hardness and lower density for cushioning), and TPE/NinjaFlex-class elastomers (very high elongation, excellent layer bonding) for soft robotics, medical models, gaskets, and wearables. See the flexible materials page for the full shore-hardness grade range.

For medical and biocompatible parts, ALT prints PEEK (biocompatible, used in medical implants), PPSU (medical-device grade, autoclavable, superior impact resistance for surgical instruments and housings), and biocompatible resins for high-detail anatomical models. ALT's synthetic tissue composites replicate the mechanical behavior of biological soft tissue for prosthetics and surgical training.

PLA is the most cost-effective common 3D printing material — accessible, biodegradable, minimal warping, and ideal for prototypes and visual models. PLA+ costs only slightly more and delivers 3–4× the impact resistance with improved layer adhesion, making it the best low-cost choice for functional test parts.

COTS (commercial off-the-shelf) materials are production-ready thermoplastics, carbon fiber composites, and resins available from major suppliers. ALT's novel materials are proprietary formulations developed in-house — synthetic tissue composites, biomimetic ceramic composites modeled on nacre, bone, and dentin, gradient material printing, and multi-functional embedded structures — engineered for Physical AI applications where standard materials don't meet the requirements.

On this page, HDPE and PETG are the food-safe candidates: HDPE is fully waterproof, food-safe, and chemically resistant though it is challenging to print, and PETG is food-safe capable while printing far more easily than HDPE. Note that print settings, nozzle condition, and geometry all affect food safety — discuss your specific application with ALT's engineers.

Match the material to the use case: PLA/PETG or resin for prototyping and visual models; PAHT-CF, PPA-CF, or Nylon for functional structural parts; ASA-CF and PP for outdoor deployment; PEEK, PPSU, and medical resin for medical and biocompatible needs; PEI/Ultem and PEEK for aerospace and high temperature; TPU and gradient materials for flexible and soft structures; and resin for high detail and surface finish.

Yes. ALT operates industrial high-temperature systems for PEEK at 360–400°C, PEI/Ultem at 340–380°C (Ultem 9085 is certified for aircraft interior use), and PPSU — with active heated chambers and specialized process control maintained in-house.