Is PLA+ Really Tougher Than Regular PLA?

One of the most common questions newcomers to 3D printing ask is: what is PLA+, and is it really better than regular PLA? Many users who spot two different spools labeled PLA and PLA+ on the shelf wonder whether the price difference is worth it. Let’s compare these two materials using technical data.

What Is PLA+? What’s the Core Difference?

PLA+ is a version of standard PLA filament that has been improved by adding additives to its polymer structure. To reduce PLA’s brittle nature, manufacturers add agents that increase impact toughness, polymer blends that improve flexibility, and sometimes processing additives that ensure a more uniform flow. The result: while the ease of printing stays at PLA level, the mechanical properties of the finished part become noticeably different.

Mechanical Comparison: PLA vs PLA+

The most critical difference between standard PLA and PLA+ shows up in impact resistance. Standard PLA typically has an Izod impact value of around 20-35 kJ/m², while PLA+ can raise this to 45-70 kJ/m². In practical terms: when you drop a part printed in PLA, the chance of cracking or breaking is higher, whereas the same part in PLA+ can absorb the impact and stay intact.

• Tensile strength: PLA 50-60 MPa, PLA+ 55-65 MPa (slight improvement)
• Impact toughness: PLA 20-35 kJ/m², PLA+ 45-70 kJ/m² (significant difference)
• Elongation (stretch): PLA 5-8%, PLA+ 10-30% (can stretch 2-4 times more)
• Printing temperature: PLA 190-220°C, PLA+ 200-230°C (slightly higher)
• Bed temperature: Both 50-65°C (usually no difference)

As you can see, the biggest leap is in impact toughness and flexibility. PLA+ significantly reduces the brittleness problem that is standard PLA’s weakest point.

When to Choose PLA, When to Choose PLA+?

Not every project requires PLA+. For decorative objects, models, display pieces, and work that will be sanded and painted after printing, standard PLA is both more economical and offers sufficient performance. However, for functional parts that will face mechanical stress, snap-fit joints, fixtures that are frequently attached and removed, and portable objects at risk of impact, PLA+ is well worth the extra cost.

Especially if you test your part in the prototype stage and see it under mechanical stress, it is a good candidate for switching. For detailed information about PLA+, you can check out our PLA filament guide.

Price-Performance Balance

PLA+ is generally 20-40% more expensive per spool than standard PLA. However, because it reduces the risk of breakage in functional parts, it lowers reprinting costs. Instead of reprinting the same part several times in your project, producing it directly with PLA+ can save both time and material in the long run. For a comparative cost calculation, you can calculate your instant price.

Among our 17 different material options available for FDM printing, PLA and PLA+ are included as well. To choose the material best suited to your needs, you can explore our wide material range and determine the most suitable solution for your project together with us.