DSM Engineering Plastics


PA410 - EcoPaXX

EcoPaXX is a high-performance aliphatic, biobased polyamide which uniquely balances benefits of typical short and long chain polyamides such as low moisture uptake and high mechanical performance. EcoPaXX has wide applicability and is especially popular as PA66  performance booster since it can be processed in the same tools.

  • 30% lower moisture uptake than PA66 with higher mechanical performance
  • Excellent surface finish
  • 72% bio-based

Explore EcoPaXX

EcoPaXX is DSM’s most established biobased engineering plastic. It combines DSM’s propriety C4 technology with the power of nature’s C10 building block derived from castor plants which do not compete with the food chain. The combination of the short C4 block and the long C10 block gives EcoPaXX high mechanical properties of typical short chain polyamides but combines these with lower moisture update and higher chemical resistance more typical of long chain polyamides. EcoPaXX can easily be processed in PA66 tools while resulting in better surface quality. This makes it an ideal candidate for when performance, aesthetics and sustainability come together. 

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EcoPaXX portfolio overview

EcoPaXX in automotive

EcoPaXX combines excellent thermal and mechanical properties with low moisture uptake and high chemical resistance. This makes it especially suitable for automotive applications that require good mechanical performance after conditioning, water/glycol ageing and road salt exposure. EcoPaXX excellent surface finish also makes it suitable for decorative components such as engine covers.  

EcoPaXX in water management

To meet customer needs for safe (drinking) water applications using lead-free technologies, EcoPaXX has specialized grades certified for warm and hot water applications. The chemical and hydrolysis resistance of these grades is superior over PA66 and low Tg PPA materials. EcoPaXX has excellent surface finish, is dishwasher safe and has lower extractable levels than PA6 or PA66, making it suitable for food contact applications.

EcoPaXX for electronics

EcoPaXX is available in V0-V2 halogen-free flame-retardant grades. Due to its low moisture uptake, it shows higher dielectric strength than other short chain polyamides, and allows for thinner wall design at same performance levels.

Most popular EcoPaXX grades

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Tensile properties after moisture uptake

Graphs show comparative data of thermal properties, moisture uptake and dry vs. conditioned tensile modulus for different unfilled polymers. EcoPaXX combination of short C4 chain and long C10 chain results in a unique balance of high crystallinity/stiffness combined with low moisture uptake and high chemical resistance. Specifically, EcoPaXX PA410 has 30% lower moisture uptake than PA66 while exhibiting similar glass transition (70°C) and melt temperature (250°C). As a result, EcoPaXX has the highest conditioned modulus (1,7GPa) amongst aliphatic polyamides.

Water/Glycol ageing

Graphs show absolute values as well as % retention of tensile properties of EcoPaXX vs. PA66 for 30%GF grades after 1000h exposure to 50/50 water/glycol mixture at 135°C. EcoPaXX has ca. 20% higher retention of tensile properties compared to PA66 grade. This results in a 5-fold increase in weldline performance (tested on tensile bars) as well as 3-fold increase in product lifetime (tested on automotive expansion tank, design dependent). As a consequence, it is possible to design parts with lower thickness and hence weight compared to PA66, while maintaining similar or higher performance.

Salt resistance

Data is shown for mechanical environmental stress cracking tests under the influence of a calcium chloride solution to mimic road salt resistance. A 3mm thick notched tensile bar is subjected to a force of 10N/mm at 75 °C in saturated CaCl2 solution until failure. The data shows that EcoPaXX is extremely resistant to CaCl2 salt with no mechanical failure even after 2500hrs being submerged in the solution, especially when compared to ca. 5 hours for PA66.


EcoPaXX can be processed very similarly to PA66.  It has a very wide processing window (270-310°C) and high melt stability. Its faster crystallization rate vs PA66 results up to 20% lower cycle times. Detailed processing guidelines for specific EcoPaXX grades are available on our plasticsfinder.

At the same time, EcoPaXX has excellent surface finish even with 30%GF content, making it suitable for decorative applications such as engine covers.

High dielectric strength and V0-V2 flame retardancy

EcoPaXX has several grades which are engineered to meet V2 and V0 flammability and high glow-wire temperatures. All EcoPaXX grades are halogen-free and hence do not release associated toxic compounds upon burning. Dielectric strength data measured according to IEC 60243-1 standard is shown for different unfilled polymers. Samples were measure before and after conditioning at 95% relative humidity at 40°C for 120h. Spherical electrodes of 20mm were used with a voltage increase of 500V/s.

The data shows that EcoPaXX has similar dielectric strength as PA66 in the dry state, but significantly higher dielectric strength after conditioning. This makes EcoPaXX more insulating, resulting in higher safety for electrical applications. It also means insulating parts with EcopaXX can be designed thinner than with PA66 without sacrificing product safety.

Carbon Footprint

EcoPaXX carbon footprint is assessed cradle-to-gate using DSM‘s in-house lifecycle assessment experts. Graph shows an overview of normalized global warming potential for different unfilled polymers. Our team can assist with calculations for specific EcoPaXX grades and we also work with our customers on cradle-to-grave assessments for specific end applications.

Hydrolysis resistance

EcoPaXX has specialized food contact and drinking water grades which are approved by all major institutions (e.g. KTW, W270, NSF61, WRAS, ACS, EU 11/2011, FDA). EcoPaXX is approved for both warm and hot water applications. Data is shown for % water uptake of 50%GF filled grades at 50% and 100% relative humidity. Due to its low moisture uptake and high mechanical strength, EcoPaXX shows excellent hydrolysis resistance with no water leakage in lifetime cycle tests up to 1 Million cycles. EcoPaXX drinking water grades have higher Tg of ca. 85°C and show superior long-term hydrolysis resistance in hot water ageing (110°C) compared to low Tg PPA.

Featured applications

Coolant expansion tank

Automotive | null

30% Weight reduction vs PA66;50% cooling time reduction vs PA66;up to 60% carbon footprint reduction;Excellent retention of properties in water/glycol of 135°C;Drop-in solution for PA66-GF tooling if PA66 fails to meet requirements

Crankshaft Covers

Automotive | Drivetrain | Transmission

ForTii® PA4T, Stanyl® PA46 and EcoPaXX® PA410 allow for light weight solutions (50% less weight compared to metal) and for cost effective solutions (up to 25% lower system/part costs compared to metal); ForTii® PA4T, Stanyl® PA46 and EcoPaXX® PA410 allow for reliable solutions due to good compatibility with FKM/LSR rubbers and to good creep&fatigue resistance in case of Stanyl® and to good temperature resistance up to 150-200°C in case of ForTii® and EcoPaXX®; Xytron™PPS can provide lots of benefits on creep, fatigue&oil resistance, even at elevated temperature.

Engine Covers (close to turbo charged components)

Automotive | Drivetrain | Transmission

EcoPaXX® PA410 allows for reliable solutions to its high temperature resistance (better than PA6), its great surface appearanceand low warpage level; EcoPaXX® PA410 allows for more sustainable solutions due to its excellent carbon footprint (70% biobased) as compared to PA6 and PA66

Faucet system components

Consumer goods | null

Lead-free solution;Due to outstanding performance, lower risk of part failure and water leakage;Bio-based polymer

Abrasive brush monofilament

Consumer goods | Appliances

EcoPaXX® PA410 allows for reliable solutions due to higher temperature resistance and higher abrasion resistance leading to longer life times as compared to PA610; EcoPaXX® PA410 leads to sustainable solutions since it is partly bio-based

Mountaineering shoes

Consumer goods | Sports & leisure

EcoPaXX® PA410 allows for reliable solutions due its excellent low temperature resistanceand excellent combination of flexibility and stiffness as required in a mountaneering shoe; EcoPaXX® PA410 allows for more sustainable solutions, since it enables solutions which are 100% carbon neutral from cradle to cradle; EcoPaXX® PA410 allows for cost effective solutions due to its good processability

Window profiles

Building & construction | Window systems

EcoPaXX® PA410 allows for light weight solutions as compared to traditional aluminium window profiles; EcoPaXX® PA410 allows for reliable solutions due to its high melting point of 250°C, making the material suitable for powder coating process; EcoPaXX® PA410 leads to sustainable solutions since it is partly bio-based

Contact us for more information

Direct and easy access to our broad portfolio of high-performance plastics: request a quote or order a sample. You can also simply ask us a (technical) question. 

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Engineered for performance while lowering your carbon footprint

EcoPaXX is our most established bio-based plastic. It has been in our portfolio for over 10 years where it has been successfully used as PA66 drop in when PA66 reaches its performance limits. EcoPaXX unique combination of short chain C4, based on DSM’s propriety technology, and long chain C10, derived from castor oil, gives rise to unique property combinations linking the application field of long chain and short chain aliphatic polyamides. It balances the high crystallinity inherent to C4 polymers with the low moisture uptake and chemical stability more typical of long chain aliphatic polyamides. At the same time, EcoPaXX has an excellent surface finish. This makes it an ideal candidate for when performance, aesthetics and sustainability come together. Engineered for performance, while lowering your carbon footprint.

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