Advanced PFOA-free material science
DSM’s Stanyl® PA46 is the industry’s leading material solution for timing drive systems. In 2017, a major car brand replaced the polyamide 66 (PA66) used in its timing drive system components with Stanyl HGR2. The switch enabled V8 engines to achieve a 0.5Nm friction torque reduction, which improved fuel economy by 0.4% and led to DSM and partners winning the Society of Plastics Engineers (SPE) Automotive Innovation Award. PFOA levels in each Stanyl grade we offer, including HGR2, are well below the detectable limit, and we provide all customers with letters of conformity certifying the material’s compliance with regulations.
Proven wear and friction properties
Due to its high crystallinity, Stanyl provides unmatched performance in under-the-hood applications subject to high torque levels. Compared to PA66, Stanyl achieves a 10-20% lower coefficient of friction in chain guides, which enables manufacturers to reduce CO₂ emissions by up to 1 gram per kilometer. The material’s outstanding resistance to pitting and abrasion wear ensures parts remain highly durable throughout the lifetime of engines. Stanyl-based support arms deliver excellent stiffness and fatigue resistance in high-temperature engines, as well as substantial material cost savings since the final parts can be lighter without compromising mechanical strength.
Driving sustainability goals
As part of DSM's commitment to supporting a more sustainable future, our team is developing bio-based alternatives for our entire engineering plastics portfolio for launch by 2030. Our new bio-based mass balanced solution Stanyl HGR3-W demonstrates ultra-low friction properties and improved torque loss reduction to bring fuel savings to the next level. In accordance with the International Sustainability & Carbon Certification (ISCC), the material leaves a smaller CO2 footprint and lower molded part scrap rate compared to Stanyl HGR2. DSM is also leveraging renewable energy sources in facilities worldwide to make our operations more eco-friendly.
Today, Stanyl is used in timing chain systems applied to 50% of newly built cars. DSM works closely with automotive OEMs and Tier 1 suppliers to evolve our material solutions so that they respond to market trends, comply with changing industry regulations and drive best-in-class part performance and reliability. Our global services teams provide comprehensive material, design and application expertise. This enables our customers to manufacture products that exceed the expectations of OEMs and support a healthier future for the planet.