We can now 3D print in over 40 different materials at the 3M BIC – ranging from high-strength polymers and heat-resistant composites to biocompatible options for medical applications. 

Choosing the right material depends on your project’s requirements, whether it’s durability, flexibility, or temperature resistance. To help you decide, we’ve compiled a list of some of the strongest materials for 3D printing and their key benefits. 

Flexible Materials 

Flexible materials include TPU, Silicone, Biomed Flex and Elastic Resins. These are ideal for tough, impact resistant parts where flexibility, elasticity and comfort are essential. 

Key points: 

• Strength: Very elastic with strong impact and vibration resistance. 

• Uses: Wearables, seals, medical parts, soft robotics and grips. 

• Sectors: Healthcare, consumer goods, robotics, automotive and sports. 

• Pros: Flexible, durable, fatigue‑resistant and often biocompatible. 

• Cons: Less precise and slower to print, needs careful tuning. 

Polycarbonate (PC) 

Polycarbonate is one of the toughest thermoplastics for 3D printing, offering high impact resistance and heat tolerance. 

Key points: 

• Strength: Extremely durable and impact resistant. 

• Uses: Mechanical parts, enclosures, industrial prototypes. 

• Sectors: Automotive, electronics, consumer products, industrial manufacturing. 

• Pros: Heat-resistant, strong, good dimensional stability. 

• Cons: Prone to warping, needs heated bed and enclosure. 

Nylon (Polyamide) 

Nylon is known for its toughness and flexibility, making it ideal for functional parts. 

Key points: 

• Strength: Excellent wear resistance and durability. 

• Uses: Gears, hinges, industrial components. 

• Sectors: Engineering, robotics, consumer goods, industrial tooling. 

• Pros: Tough, flexible, abrasion resistant. 

• Cons: Absorbs moisture (needs drying), can warp without proper settings 

PEEK (Polyether Ether Ketone) 

PEEK is a high-performance polymer used in demanding industries like aerospace and medical. 

Key points: 

• Strength: Exceptional mechanical and chemical resistance. 

• Uses: Medical implants, aerospace, automotive. 

• Sectors: Healthcare, aerospace, automotive, oil & gas, electronics. 

• Pros: High heat tolerance, biocompatible, extremely strong. 

• Cons: Requires specialised high-temp printers, very expensive. 

Metal Filaments / Metal 3D Printing 

Metal 3D printing uses processes like SLM (Selective Laser Melting) or DMLS (Direct Metal Laser Sintering), or metal-infused filaments for FDM printers. These options include stainless steel, titanium and aluminium, producing parts with strength comparable to traditional metal components. 

Key points: 

• Strength: Comparable to machined metal parts. 

• Uses: Aerospace components, medical instruments, tooling, and high-performance prototypes. 

• Sectors: Aerospace, automotive, healthcare, industrial manufacturing, defence. 

• Pros: Exceptional durability, heat resistance, and load-bearing capability. 

• Cons: Requires industrial-grade printers, post-processing (e.g., sintering), and higher costs. 

High-performance composites 

High-performance composite materials combine polymers with reinforcing fibres – such as carbon fibre, glass fibre or Kevlar – to deliver outstanding strength, stiffness and dimensional stability. Examples include Carbon Fibre + Nylon/PLA, Glass Filled Nylon/ PP/ ABS and PEEK based composites, all suited to demanding structural and industrial applications. 

Key points: 

• Strength: Very high stiffness, rigidity and stability. 

• Uses: Structural parts, brackets, gears, housings, jigs and fixtures. 

• Sectors: Aerospace, automotive, robotics, defence and industrial tooling. 

• Pros: Strong, lightweight, heat/chemical‑resistant, high‑quality finishes. 

• Cons: Abrasive, can be brittle, higher cost, some types need specialised printers. 

Whether you need high-strength composites for aerospace, biocompatible polymers for medical applications, or durable metals for industrial tooling, choosing the right material is key to achieving the best results.  

At the 3M BIC, our team can guide you through the options and help you select the perfect material for your project. Get in touch today or check out our materials guide here.