PLA vs PLA+: What the 'Plus' Actually Means

Is PLA+ a standard grade?

You won't find a published specification that a filament has to meet before it can be called PLA+. The name is marketing shorthand for "our improved PLA," and each brand decides what "improved" means.

You can see this inside a single brand. ELEGOO's US store sells a standard PLA, a PLA Plus, a Rapid PLA Plus, and a PLA Pro, each with its own property table. eSUN sells PLA+. Polymaker sells PolyLite PLA Pro alongside its standard PolyLite PLA, and a comparison graphic on its product page lists "Regular PLA+" and "Regular PLA" as separate categories.

These data sheets also tell you what the "plus" achieves, not how it gets there. None of the documents we checked names the additive or modifier used. Treat any claim about what a PLA+ "contains" as a guess unless the maker publishes it. The same naming question comes up with ABS; see ABS vs ABS+.

What three makers say their "plus" does

eSUN PLA+: "strength is significantly improved"

eSUN's PLA+ data sheet (Feb. 2026, Version 1.0) says the "strength is significantly improved compared with ordinary PLA." It lists "good toughness" and "hard to break" among the characteristics, along with high-speed printing, and its recommended parameters give a printing speed below 300 mm/s.

It recommends a 210 to 230 °C nozzle and a 45 to 60 °C bed, both warmer at the low end than the standard PLAs in this guide. The same sheet lists a heat distortion temperature of 53.78 °C at 0.45 MPa and answers "NO" for UV resistance.

The sheet doesn't include a standard PLA from eSUN to compare against, so you can't check the "significantly improved" claim from this document alone.

Polymaker PolyLite PLA Pro: toughness with the same heat limit

Polymaker is the most useful example, because it publishes data sheets for both its standard PolyLite PLA and its PolyLite PLA Pro, using the same test methods. The product page describes PLA Pro as combining "outstanding toughness and high rigidity with the easy printability you expect from PLA."

The data sheets back up the toughness claim. Notched Charpy impact strength (ISO 179, X-Y) is 17.1 kJ/m² for PLA Pro against 3.3 kJ/m² for PolyLite PLA. Other properties barely move or fall slightly:

• Elongation at break (X-Y): 6.3% on both sheets.
• Young's modulus (X-Y): about 2,932 MPa for PLA Pro against about 3,427 MPa for PolyLite PLA. The Pro version is a little less stiff.
• Heat deflection temperature (ISO 75): 58 °C at 1.8 MPa for both. At 0.45 MPa, PLA Pro lists 59 °C and PolyLite PLA lists 60 °C.

Polymaker is clear about the limits. The product page says to use PLA Pro "as long as your project doesn't require high heat resistance or flexibility." One more detail to know: the PLA Pro data sheet gives a 190 to 230 °C nozzle range, but the product page now lists 190 to 220 °C. Staying within 190 to 220 °C satisfies both.

ELEGOO Rapid PLA+: the "plus" is mostly speed

ELEGOO's Rapid PLA+ page leads with speed. It describes "enhanced fluidity" for printing "up to 600mm/s," compared with under 300 mm/s on ELEGOO's standard PLA page. It also claims high flexural modulus and elongation at break that make it "resistant to brittleness and cracking."

ELEGOO's own tables tell a more mixed story. Its listed impact strength (X-Y) is 50.4 kJ/m² for Rapid PLA+, lower than the 66.2 kJ/m² it lists for its standard PLA. Elongation at break (X-Y) is 8.5% against 10.5%. The heat deflection temperature is 57 °C at 0.45 MPa on both pages. Recommended nozzle ranges are 200 to 230 °C for Rapid PLA+ and 190 to 230 °C for standard PLA.

ELEGOO's other variants don't list a higher impact figure than its standard PLA either. Its PLA Plus lists 65.5 kJ/m² impact and a 56 °C HDT. Its PLA Pro lists 30.2 kJ/m² impact, 14.1% elongation, a 56 °C HDT, and a cooler 180 to 210 °C nozzle range. Within one brand, three "Plus" and "Pro" grades make three different trade-offs.

Why you can't compare these numbers across brands

It's tempting to line up the impact figures and pick the biggest one. Don't. They come from different tests:

• Polymaker reports notched Charpy impact under ISO 179.
• eSUN reports Izod impact under GB/T 1843: 7.27 kJ/m² (X-Y) and 2.22 kJ/m² (Z).
• ELEGOO lists "Impact Strength" without naming a test method on its product pages.

Charpy and Izod are different tests. Notched and unnotched specimens give very different results, and each maker prints its test bars with its own settings. So when ELEGOO's standard PLA shows 66.2 kJ/m² and Polymaker's PolyLite PLA shows 3.3 kJ/m², the gap doesn't tell you which is tougher. The numbers may not be measuring the same thing, so neither proves one spool is tougher than the other.

The fair comparisons are within one maker's own lineup. Polymaker's PLA vs PLA Pro works, because both sheets name the same ISO methods. ELEGOO's PLA vs Rapid PLA+ is a reasonable comparison, since ELEGOO presents both in identical tables, though it doesn't name the method. eSUN PLA+ vs Polymaker PLA Pro doesn't work. If you're choosing between those two spools anyway, see our eSUN PLA+ vs PolyLite PLA Pro comparison. For ELEGOO's Rapid PLA+ against Creality's Hyper PLA, see Creality Hyper PLA vs ELEGOO Rapid PLA+.

Is PLA+ more heat resistant than PLA?

If you're hoping a "plus" grade will survive a hot car, the data sheets say otherwise. Where the same maker lists both, the PLA+ or PLA Pro HDT is within a degree or so of its standard PLA. eSUN doesn't publish a standard PLA alongside its PLA+ sheet, and its figure uses a different standard (GB/T 1634), so read it on its own:

Prusament PLA, a standard PLA, doesn't list an HDT on its material page. It gives a temperature resistance of 55 °C and says the material has low UV resistance and is not ideal for outdoor use.

Always check the load next to an HDT figure. A value at 0.45 MPa runs higher than one at 1.8 MPa for the same material, as Polymaker's sheets show. If you need real heat resistance, look at a different material such as PETG (see PLA vs PETG), or at a grade a maker specifically documents for heat. A "plus" label alone won't get you there.

Print settings shift, so don't reuse your PLA profile blindly

The ranges below are each maker's published recommendations:

The ranges overlap, but not completely. A profile tuned at 195 °C for a standard PLA falls below eSUN's and ELEGOO Rapid PLA+'s published minimums. ELEGOO's PLA Pro sits at the other end, topping out at 210 °C. When you switch to any "plus" or "pro" spool, start from its maker's numbers and adjust from there. If a new spool prints weak or snaps, our brittle filament guide helps you work out whether the cause is temperature, moisture, or the material itself. For stringing, lifting corners, or jams, see PLA printing problems.

Drying guidance differs too:

For storage options, see filament storage.

When is standard PLA enough?

A "plus" grade earns its place when its maker documents an improvement you actually need. Standard PLA is usually the better starting point when:

• The part is decorative or lightly loaded. Display models, figurines, organizers, and prototypes for fit checks don't need extra impact resistance.
• You want maximum stiffness. On Polymaker's sheets, standard PolyLite PLA lists a higher Young's modulus than PLA Pro.
• Heat is the problem. As the table above shows, a "plus" label doesn't fix it.

A "plus" or "pro" grade makes sense when:

• The part gets dropped, clipped, or knocked, and the maker publishes an impact figure that beats its own standard PLA under the same test. Polymaker's PLA Pro is a clear example.
• You print fast, and the maker documents higher speed limits for the grade, as ELEGOO does for Rapid PLA+.

Side-by-side summary

Quick answers

Is PLA+ stronger than PLA? It depends on the product. Polymaker's PLA Pro lists 17.1 kJ/m² notched Charpy impact against 3.3 kJ/m² for its PolyLite PLA, while ELEGOO lists lower impact for its Rapid PLA+ (50.4 kJ/m²) than for its standard PLA (66.2 kJ/m²).

Does PLA+ handle more heat than PLA? Not by much. Where a maker publishes both grades, the PLA+ or PLA Pro HDT is within a degree or so of its standard PLA, such as 59 °C for Polymaker's PLA Pro against 60 °C for PolyLite PLA at 0.45 MPa.

Can I use my PLA profile for PLA+? Start from the maker's own numbers instead. eSUN's PLA+ recommends a 210 to 230 °C nozzle, so a profile tuned at 195 °C for a standard PLA falls below its minimum.

Can I compare impact figures across brands? No. Polymaker reports notched Charpy (ISO 179), eSUN reports Izod (GB/T 1843), and ELEGOO doesn't name a test method, so compare only within one maker's lineup.

Before you buy a "plus" spool

• Find what the maker says the "plus" improves: toughness, speed, finish, or something else.
• Look for the same maker's standard PLA data sheet and compare like with like.
• Check the impact test method. A figure without a named method is a weak basis for comparison.
• Read the HDT and its load. Don't expect a "plus" to survive more heat.
• Set your slicer to the maker's nozzle and bed ranges, not your old PLA profile.
• Rule out food-contact, child-use, electrical, or safety-critical uses. No PLA grade makes a printed part safe for those.

Ready to choose a spool? The PLA filament shortlist covers standard, tough, and high-speed grades with their published maker data. The PLA hub collects everything else we've written on PLA.

PLA: what to check before you buy a spool ↗