Last Updated:
Strongest 3D Printing Materials We Offer at JawsTec
When strength matters, material choice is critical. At JawsTec, we offer a range of high-performance 3D printing materials designed for functional parts, prototypes, and end-use components. These materials are commonly used in aerospace, automotive, manufacturing, and engineering applications where durability, accuracy, and reliability are required.
Below is a breakdown of the strongest 3D printing materials we offer, along with guidance on when to use each one.
Stainless Steel 3D Printing (316L and 17-4PH)
Stainless steel is the strongest material we offer for 3D printing. It provides excellent mechanical strength, corrosion resistance, and long-term durability.
316L stainless steel is known for its corrosion resistance and toughness, making it ideal for harsh environments. 17-4PH stainless steel offers higher strength and hardness after heat treatment, making it suitable for load-bearing parts.
Common applications include brackets, housings, tooling, fixtures, gears, and industrial replacement parts.
Choose stainless steel when you need metal strength, tight tolerances, and reliable performance in demanding conditions.
Aluminum 3D Printing (AlSi10Mg)
Aluminum is a strong, lightweight metal commonly used in engineering and production applications. AlSi10Mg offers a high strength-to-weight ratio, good thermal performance, and strong corrosion resistance.
This material is often used in aerospace, automotive, and mechanical designs where reducing weight is important without sacrificing strength.
Typical uses include structural components, enclosures, mounts, and heat-sensitive parts.
Choose aluminum when you need metal strength with lower weight and good dimensional accuracy.
Glass-Filled Nylon 3D Printing (MJF)
Glass-filled nylon is one of the strongest plastic materials we offer. The added glass fibers increase stiffness, strength, and heat resistance compared to standard nylon.
This material performs well under mechanical loads and is often used as a metal alternative for certain applications.
Common uses include jigs, fixtures, tooling aids, structural plastic components, and functional prototypes.
Choose glass-filled nylon when you need a rigid, strong plastic part that can handle stress without excessive flex.
PA12 Nylon 3D Printing (MJF and SLS)
PA12 nylon is a widely used engineering plastic known for its balance of strength, toughness, and chemical resistance. It produces consistent, accurate parts with good impact resistance.
PA12 is suitable for both prototypes and end-use components and performs well in real-world conditions.
Typical applications include housings, clips, brackets, enclosures, and wear-resistant parts.
Choose PA12 nylon when you need a strong, durable plastic with reliable performance and clean surface quality.
TPU 3D Printing (Flexible and Durable)
TPU is a flexible material known for its abrasion resistance and toughness. It can bend, compress, and recover without breaking, making it ideal for parts that absorb impact or vibration.
TPU maintains strength even under repeated flexing.
Typical applications include seals, gaskets, protective covers, dampers, and flexible connectors.
Choose TPU when flexibility and durability are required in a functional part.
How to Choose the Strongest 3D Printing Material
The strongest material depends on how the part will be used.
If you need maximum strength and durability, stainless steel is the best option.
If weight matters, aluminum provides strong performance with less mass.
If you need a strong plastic alternative, glass-filled nylon or PA12 are reliable choices.
If flexibility or impact resistance is important, polypropylene or TPU may be the best fit.
| Material | Key Strengths | Common Applications | Best When |
|---|---|---|---|
| Stainless Steel (316L & 17-4PH) | Highest mechanical strength
Excellent corrosion resistance Long-term durability Heat-treatable (17-4PH for higher hardness) |
Brackets
Housings Tooling & fixtures Gears Industrial replacement parts |
You need true metal strength
Parts must handle heavy loads Tight tolerances are required Harsh environments are involved |
| Aluminum (AlSi10Mg) | High strength-to-weight ratio
Lightweight metal Good thermal performance Strong corrosion resistance |
Structural components
Aerospace parts Automotive mounts Heat-sensitive components Enclosures |
Weight reduction is critical
Strength must be maintained Thermal performance matters |
| Glass-Filled Nylon (MJF) | Very rigid plastic
Increased stiffness vs standard nylon Improved heat resistance Handles mechanical stress well |
Jigs & fixtures
Tooling aids Structural plastic parts Functional prototypes |
You need a rigid plastic alternative to metal
Mechanical loads are present Flex must be minimized |
| PA12 Nylon (MJF & SLS) | Balanced strength & toughness
Good chemical resistance Impact resistant Consistent dimensional accuracy |
Housings
Clips Brackets Enclosures Wear-resistant components |
You need a durable, general-purpose engineering plastic
Parts must perform reliably in real-world conditions |
| TPU (Flexible & Durable) | Flexible and elastic
Abrasion resistant Handles repeated compression Absorbs impact and vibration |
Seals
Gaskets Protective covers DampersFlexible connectors |
Flexibility is required
Parts must bend or compress Impact absorption is needed |
Strong Materials Built for Real-World Use
At JawsTec, we focus on materials that perform in real applications, not just on paper. Our industrial 3D printing capabilities allow us to produce strong, accurate parts using proven materials and processes.
If you’re unsure which material is right for your project, our team can help you choose the best option based on strength, environment, and performance requirements.
Get started with an instant quote and bring your strongest designs to life.