DSM Engineering Plastics

en

PA46 - Stanyl

Stanyl is a high-performance aliphatic polyamide with a melting temperature of 295°C that due to its high crystallinity and fast crystallization speeds entails three key strengths:

 

  • Excellent high-temperature mechanical performance
  • Excellent wear and friction properties
  • Superior flow

Explore Stanyl

Stanyl is the first high-temperature polyamide and the only aliphatic polyamide in its class. Thirty years ago it defined this class of materials and today it is still the most widely used polymer basis. The symmetry of the 46 structure ensures that the polymers fit in the crystal in multiple ways, thereby giving rise to high crystallization speeds and high crystallinity. This combination makes the material ideal for high-temperature applications due to excellent mechanics as well as wear and friction behavior, where the flow and the flow-mechanics balance are one of a kind.

View all stanyl grades

Stanyl portfolio overview

Stanyl Diablo

The unique stabilization technique developed in house at DSM has sparked the Diablo portfolio. This class of materials have improved heat ageing performance versus the standard-heat stabilized materials. Combining this invention with the excellent high-temperature mechanics of Stanyl has opened up the Stanyl Diablo portfolio in which we can provide high stiffness levels with stable mechanical performance after prolonged ageing at temperatures of 230°C. 

Stanyl for low friction

A wide range of PA46 materials have been developed that can be applied in friction driven applications like gears and actuators and valve timing chain guides. 

Stanyl in electronics

Due to the superior flow behavior, high CTI, as well as strong mechanical performance at high temperatures and weld-line strength, Stanyl is often used in connectors, for example USB-C connectors.

Most popular Stanyl grades

DSM Plasticsfinder

Stanyl® TW200F6

30% Glass Reinforced, Heat Stabilized

Stanyl® is our high-performance polyamide 46 used for applications in automotive, E&E, gears and outdoor power equipments.

Stanyl® is a high performance polyamide that provides unmatched performance and value for demanding applications in which superior heat resistance, design stiffness, wear & friction and process flow qualities are required.

Because Stanyl retains its mechanical properties at high temperatures up to 220°C, this makes it ideal for extremely high-performance applications, where it outperforms PPA, PA6T, PA9T, and often PPS and LCP.

  • Heat stabilized or stable to heat
DSM Plasticsfinder

Stanyl® TW341

Heat Stabilized, Lubricated

Stanyl® is our high-performance polyamide 46 used for applications in automotive, E&E, gears and outdoor power equipments.

Stanyl® is a high performance polyamide that provides unmatched performance and value for demanding applications in which superior heat resistance, design stiffness, wear & friction and process flow qualities are required.

Because Stanyl retains its mechanical properties at high temperatures up to 220°C, this makes it ideal for extremely high-performance applications, where it outperforms PPA, PA6T, PA9T, and often PPS and LCP.

  • Contains release agent
  • Heat stabilized or stable to heat
  • Lubricated
DSM Plasticsfinder

Stanyl® TE250F6

30% Glass Reinforced, Heat Stabilized, Flame Retardant

Stanyl® is our high-performance polyamide 46 used for applications in automotive, E&E, gears and outdoor power equipments.

Stanyl® is a high performance polyamide that provides unmatched performance and value for demanding applications in which superior heat resistance, design stiffness, wear & friction and process flow qualities are required.

Because Stanyl retains its mechanical properties at high temperatures up to 220°C, this makes it ideal for extremely high-performance applications, where it outperforms PPA, PA6T, PA9T, and often PPS and LCP.

  • Contains release agent
  • Heat stabilized or stable to heat
  • Lubricated
  • Platable
DSM Plasticsfinder

Stanyl® TW371

Heat Stabilized, Wear and Friction Modified

Stanyl® is our high-performance polyamide 46 used for applications in automotive, E&E, gears and outdoor power equipments.

Stanyl® is a high performance polyamide that provides unmatched performance and value for demanding applications in which superior heat resistance, design stiffness, wear & friction and process flow qualities are required.

Because Stanyl retains its mechanical properties at high temperatures up to 220°C, this makes it ideal for extremely high-performance applications, where it outperforms PPA, PA6T, PA9T, and often PPS and LCP.

  • Heat stabilized or stable to heat
  • Lubricated
  • Wear and friction modified
View all Stanyl grades
DSM Plasticsfinder

Stanyl® TW241F10

50% Glass Reinforced, Heat Stabilized, Lubricated

Stanyl® is our high-performance polyamide 46 used for applications in automotive, E&E, gears and outdoor power equipments.

Stanyl® is a high performance polyamide that provides unmatched performance and value for demanding applications in which superior heat resistance, design stiffness, wear & friction and process flow qualities are required.

Because Stanyl retains its mechanical properties at high temperatures up to 220°C, this makes it ideal for extremely high-performance applications, where it outperforms PPA, PA6T, PA9T, and often PPS and LCP.

  • Heat stabilized or stable to heat
  • Lubricated
DSM Plasticsfinder

Stanyl® Diablo HDT2700

40% Glass Reinforced, Heat Stabilized

Stanyl® is our high-performance polyamide 46 used for applications in automotive, E&E, gears and outdoor power equipments.

Stanyl® is a high performance polyamide that provides unmatched performance and value for demanding applications in which superior heat resistance, design stiffness, wear & friction and process flow qualities are required.

Because Stanyl retains its mechanical properties at high temperatures up to 220°C, this makes it ideal for extremely high-performance applications, where it outperforms PPA, PA6T, PA9T, and often PPS and LCP.

  • Contains release agent
  • Heat stabilized or stable to heat
  • Lubricated

Properties

High-temperature mechanical performance

Since Stanyl is the only semi-crystalline aliphatic polyamide operating in the high-temperature field, the comparison with other materials is generally with other classes of materials like PPS or semi-aromatic polyamides, referred to as PPA. For clarification we displayed a PA66 based material to show the differences with other aliphatic polyamides, showing that Stanyl is uniquely situated in this class of materials. The data shows all is based on 30% glass fiber filled materials.

 

     

Dynamic mechanical analysis

In the graph the loss modulus of three different materials are displayed—a PA66 (blue), two different PPA’s (green and purple), a PPS (red), and Stanyl (orange) as determined in a dynamic mechanical thermal analysis in tensile mode. The DMTA can be divided into the glass plateau region (below the glass transition temperature) and in the rubber plateau region, at temperatures higher than the glass transition temperature. Where in the glass plateau all polymers have a similar modulus being 1-1.5 GPa, it is clear that the real strength of Stanyl starts at temperatures higher than the glass transition temperature. Here irrespective of the polymer class displayed in the graph, the modulus of Stanyl is highest of all polymers.

 

Short-term mechanical testing

A similar effect can be seen also for the short-term mechanics testing—in this case tensile performance. Where the difference at room temperature is not that big, at 120°C when comparing the data between PPS, PA66, and Stanyl it is already clear that Stanyl has the highest strength and elongation at break of the different materials. The PPA2 deviates as this material is below its glass transition temperature. However, when the temperature is increased to 200°C, Stanyl outperforms all other materials displayed in this graph, with Stanyl having the highest strength and elongation at break of these materials.

 

 

TENSILE IMAGE

Wear and friction

The wear depth has been determined for PA66 and Stanyl PA46. In this case the wear was determined in a gear application where the wear depth as function of the number of cycles was being studied. The wear was determined to be much higher for PA66 materials than for the Stanyl material. The main elements that are providing this strength is the creep and fatigue performance of Stanyl versus PA66 based materials. In both properties Stanyl outperforms the other aliphatic polyamides as the stiffness and strength level in Stanyl is higher due to the higher degree of crystallinity.

Water absorption

Although the chemical structure of Stanyl brings the fast crystallization speed and the high degree of crystallinity, it also brings a higher degree of water absorption than other aliphatic polyamides. Naturally this absorption of water negatively impacts the dimensional stability of Stanyl materials and especially for unfilled materials as it contains the highest amount of polymer. Consequently, for the highly filled materials that have a high glass fiber or carbon fiber loading, the water absorption is off course much lower and the impact on the dimensional stability less severe. (do we have a moisture uptake graph?)

The second effect that moisture has on any polyamide is the lowering of the glass transition temperature (Tg). Since the moisture absorption for Stanyl is the highest, also the drop in glass transition temperature is higher, but Stanyl starts with a Tg that is 15°C higher than that of PA66. For some applications, this is an issue; however, in cases where the application is operated at a moist condition and at moderate (40-100°C) the benefits of a high crystallinity level for Stanyl start to kick in. In this area the mechanical performance of Stanyl is higher than PA66 for example (show the graph).


Featured applications

Crankshaft Balance Gears

Automotive | Engine | Transmission

Stanyl® PA46 allows for 40% lightweight (additional CO₂ reduction through improved moments of inertia) and 35% more cost effective solutions versus metal and it provides a significant reduction in rattling noise of gears in comparison with metal gears; Stanyl® PA46 is more cost effective in comparison with PEEK

Spatulas and Kitchenware

Consumer goods | Household utensils

Stanyl® PA46 and Akulon® PA66 allow reliable solutions, since Stanyl® PA46 offers much higher melting temperature and HDT than PA66 and Akulon® PA66 has significantly higher melting temperature resistance than PP and PA6; Stanyl® PA46 allows for cost effective solutions since it offers high flowability enabling very thin wall designs and faster injection moulding cycle times than PA66

Slide Shoe Surfaces in new generation

Automotive | Engine | Valve Train

Stanyl® PA46 HGR2 allows for very sustainable solutions, since they enable lower frictional torque in comparison with any other material (e.g. PA66) at relatively low engine speeds ranging from idle to 1800 rpm (Stanyl® HGR2 will provide OEM's with a very cost-effective tool for reducing fuel consumption); Stanyl® PA46 allows for reliable solutions due to its high abrasion resistance (7 times better than PA66)

USB-C Connectors

Electronics | Desktops / PCs

Stanyl® PA46 offers the safest solution for USB connectors due to high HDT's a CTI rating of 600V is achieved (enabling up to 27 Watt power). The high CTI Stanyl® fails only after more than 2x the number of salt solution droplets compared to a lower CTI LCP during CTI (Comparative Tracking Index) test.;Due to the high wear resistance Stanyl® PA46 shows no sign of wear after 10,000 insertion/extraction cycles, where a PA9T shows a clear wear out at the mating surface after durability tests.;Stanyl® PA46 allow for cost effective solutions due to its excellent processability and high flowability, enabling thin walled designs and strong weld lines. Stanyl PA46’s weld line strength is 3 times higher than that of a LCP or PA9T.;UL94-V0 at 0.2mm wall thickness, extensive color portfolio, including light colors. No blistering in USB-C connector designs.;Stanyl® PA46 powers high-bandwidth USB-C connectors for Virtual Reality - Virtual Link Connectors (SuperSpeed USB 10Gbps) for headset cameras and sensors.

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. 
 

request a quote
Order a sample
Ask a question

Sustaining high performance

The first commercializations of Stanyl were achieved 30 years ago. Currently, it is the largest single polymer being used in the high-performance polyamide landscape. The symmetry of the chemical structure lays the foundation of its success as it provides the basis for the high degree of crystallinity and fast crystallization speed. These two features are the basis of the three key strengths of Stanyl being excellent high-temperature mechanics, excellent wear and friction performance and superior flow. These strengths are what drives the business of Stanyl. Because of these features, this materials displays exceptional retention of mechanical properties after passing through the glass transition, giving rise to its high-temperature performance.