Best 3D Printing Materials: PLA vs PETG vs ABS/ASA, Nylon & PC
Best 3D Printing Materials: PLA vs PETG vs ABS/ASA, Nylon & PC
Choosing the best 3D printing material depends on what the part needs to survive: heat, UV, impact, flex, chemicals, or just looking good fast. In Australia, the combination of sun/UV + warm cars + outdoor exposure makes material choice matter even more for brackets, enclosures, mounts, and functional prototypes.
Engineering plastics on the shelf: material choice starts with what the part must survive.
In this article
This guide compares the most common FDM materials used for prototypes and functional parts—PLA, PETG, ABS, ASA, Nylon and Polycarbonate (PC)—with practical guidance on where each performs well, where it is limited, and when a different material is the safer choice.
Quick answer: what’s the “best” 3D printing material?
- General-purpose functional parts: PETG
- Outdoor parts (UV + weather): ASA
- Higher-temperature engineering parts: ABS or PC (case-by-case)
- Wear, impact and repeated movement: Nylon (and composites)
- Low-cost prototypes and visual checks: PLA
Tip: If you’re unsure, start with PETG for most functional indoor parts, and switch to ASA if the part will live outside.
Material comparison table (PLA vs PETG vs ABS/ASA vs Nylon vs PC)
| Material | Best for | Pros | Watch-outs | Notes |
|---|---|---|---|---|
| PLA | Fast prototypes, jigs, display parts | Good detail, low warping and low cost | Low heat resistance and limited long-term outdoor durability | Avoid for hot vehicles and prolonged outdoor use |
| PETG | General functional parts, brackets, housings | Tough, good interlayer bonding and useful moisture resistance | Can string; lower heat and UV performance than ASA | Practical baseline for many indoor functional parts |
| ABS | Higher heat parts, enclosures, engineering prototypes | Good heat resistance, impact performance and post-processing options | Prone to warping; requires controlled printing; limited UV stability | Well suited indoors; ASA is generally preferred outdoors |
| ASA | Outdoor parts (sun, rain, UV), signage, covers | UV-stable, weather-resistant and suitable for outdoor use | Requires controlled printing and good warping management | Strong baseline for Australian outdoor applications |
| Nylon | Wear parts, impact parts, clips, hinges | High toughness and good abrasion resistance | Moisture-sensitive; requires drying and can creep under sustained load | Useful where toughness and repeated flex matter |
| PC (Polycarbonate) | High strength + higher heat engineering parts | High impact performance and elevated-temperature capability | Requires controlled printing, drying and careful process setup | Best where heat and impact justify the higher cost |
How to choose the right material (by real-world use)
1) Outdoor parts in Australia (UV + weather)
If the part will sit outside—sunlight, heat cycles, rain—ASA is usually the safest choice. PLA will age quickly outdoors, and ABS can degrade under UV over time.
- Best pick: ASA
- Alternative: PETG for sheltered outdoor use (less UV exposure)
2) Brackets, mounts, general functional parts (indoors)
For most functional parts that need toughness without being overkill, PETG is the best balance of strength, print reliability, and cost.
- Best pick: PETG
- Upgrade: ABS / PC if you need more heat resistance
3) Heat exposure (car interiors, near motors, warm enclosures)
If the part will sit in a hot environment (think: a car parked in summer), avoid PLA. Move to ABS, ASA, or PC depending on how demanding the application is.
- Best pick: ABS or ASA
- Highest performance: PC (when designed + printed correctly)
4) Clips, hinges, impact parts, wear surfaces
When you want the part to flex and survive repeated use without cracking, Nylon is a strong candidate (especially for impact + abrasion).
- Best pick: Nylon
- Alternative: PETG for simpler, lower-wear parts
Printing notes (why some materials “fail”)
PLA
- Great for accuracy and speed, but not for heat or outdoor longevity.
PETG
- Very reliable for functional parts; can be stringy if not tuned.
- Great layer bonding = strong parts when oriented correctly.
ABS / ASA
- Both benefit from an enclosure to reduce warping.
- ASA is preferred for outdoor parts due to UV stability.
Nylon
- Moisture is a major issue: wet nylon can print inconsistently and produce weaker, rougher parts.
- Correct drying and storage can make a substantial difference to print quality and consistency.
PC
- High performance, but needs controlled printing conditions.
FAQ
Is PLA “strong”?
PLA can perform well under suitable static loads, but it’s more likely to soften with heat and doesn’t handle outdoor conditions well. For functional parts, PETG is often a better baseline.
Is PETG good for outdoor use?
It can be, especially for sheltered applications. For parts that sit in direct sun long-term, ASA is typically the safer outdoor material.
What’s the best material for an enclosure?
PETG for general enclosures, ABS/ASA if heat is a factor, and ASA if the enclosure is outdoors.
Can you recommend a material if I upload my model?
Yes. Upload the CAD file and include the use case (indoor/outdoor, load, heat exposure), and we can recommend a practical material option for quoting. Final suitability and testing remain the customer’s responsibility.
Need help choosing the right material?
If you want a quick recommendation, send:
- Your file (STL / STEP)
- Where it will be used (indoor/outdoor)
- Any heat exposure (car, motor, sunlight)
- How many parts you need
Upload your model and we’ll come back with the best material option and a quote.
Related: 3D Printing vs CNC Machining: cost, lead time & when to choose each
Material and process guidance is general. The customer remains responsible for design accuracy, final fit, testing, compliance and fitness for purpose.
Need Help Choosing a Material?
Upload your CAD and tell us the environment. We will recommend a practical FDM grade for the job.
Explore the materials guide, compare FDM, SLA resin and SLS nylon, or return to the Solidium3D blog.